--- /dev/null
+function bayesTrain(id, train_up) {
+ try {
+
+ var query = "backend.php?op=pluginhandler&plugin=af_sort_bayes&method=trainArticle&article_id=" + param_escape(id) +
+ "&train_up=" + train_up;
+
+ new Ajax.Request("backend.php", {
+ parameters: query,
+ onComplete: function(transport) {
+ notify(transport.responseText);
+ } });
+
+ } catch (e) {
+ exception_error("showTrgmRelated", e);
+ }
+}
+
--- /dev/null
+<?php
+
+class Af_Sort_Bayes extends Plugin {
+
+ private $host;
+ private $filters = array();
+ private $dbh;
+
+ function about() {
+ return array(1.0,
+ "Bayesian classifier for tt-rss (WIP)",
+ "fox");
+ }
+
+ function init($host) {
+ require_once __DIR__ . "/lib/class.naivebayesian.php";
+ require_once __DIR__ . "/lib/class.naivebayesianstorage.php";
+
+ $this->host = $host;
+ $this->dbh = Db::get();
+
+ $this->init_database();
+
+ $host->add_hook($host::HOOK_ARTICLE_FILTER, $this);
+ $host->add_hook($host::HOOK_PREFS_TAB, $this);
+ $host->add_hook($host::HOOK_ARTICLE_BUTTON, $this);
+
+ }
+
+ function trainArticle() {
+ $article_id = (int) $_REQUEST["article_id"];
+ $train_up = sql_bool_to_bool($_REQUEST["train_up"]);
+
+ print "FIXME: $article_id :: $train_up";
+
+ }
+
+ function get_js() {
+ return file_get_contents(__DIR__ . "/init.js");
+ }
+
+ function hook_article_button($line) {
+ return "<img src=\"plugins/af_sort_bayes/thumb_up.png\"
+ style=\"cursor : pointer\" style=\"cursor : pointer\"
+ onclick=\"bayesTrain(".$line["id"].", true)\"
+ class='tagsPic' title='".__('+1')."'>" .
+ "<img src=\"plugins/af_sort_bayes/thumb_down.png\"
+ style=\"cursor : pointer\" style=\"cursor : pointer\"
+ onclick=\"bayesTrain(".$line["id"].", false)\"
+ class='tagsPic' title='".__('-1')."'>";
+
+ }
+
+ function init_database() {
+ $prefix = "ttrss_plugin_af_sort_bayes";
+
+ /*$this->dbh->query("DROP TABLE IF EXISTS ${prefix}_references", false);
+ $this->dbh->query("DROP TABLE IF EXISTS ${prefix}_categories", false);
+ $this->dbh->query("DROP TABLE IF EXISTS ${prefix}_wordfreqs", false);*/
+
+ $this->dbh->query("BEGIN");
+
+ // PG only for the time being
+
+ $this->dbh->query("CREATE TABLE IF NOT EXISTS ${prefix}_categories (
+ id SERIAL NOT NULL PRIMARY KEY,
+ category varchar(100) NOT NULL DEFAULT '',
+ probability DOUBLE PRECISION NOT NULL DEFAULT '0',
+ owner_uid INTEGER NOT NULL REFERENCES ttrss_users(id) ON DELETE CASCADE,
+ word_count BIGINT NOT NULL DEFAULT '0')");
+
+ $this->dbh->query("CREATE TABLE IF NOT EXISTS ${prefix}_documents (
+ id SERIAL NOT NULL PRIMARY KEY,
+ document varchar(250) NOT NULL DEFAULT '',
+ category_id INTEGER NOT NULL REFERENCES ${prefix}_categories(id) ON DELETE CASCADE,
+ owner_uid INTEGER NOT NULL REFERENCES ttrss_users(id) ON DELETE CASCADE,
+ content text NOT NULL)");
+
+ $this->dbh->query("CREATE TABLE IF NOT EXISTS ${prefix}_wordfreqs (
+ word varchar(100) NOT NULL DEFAULT '',
+ category_id INTEGER NOT NULL REFERENCES ${prefix}_categories(id) ON DELETE CASCADE,
+ owner_uid INTEGER NOT NULL REFERENCES ttrss_users(id) ON DELETE CASCADE,
+ count BIGINT NOT NULL DEFAULT '0')");
+
+ $this->dbh->query("COMMIT");
+ }
+
+ function hook_prefs_tab($args) {
+ if ($args != "prefPrefs") return;
+
+ print "<div dojoType=\"dijit.layout.AccordionPane\" title=\"".__('af_sort_bayes')."\">";
+
+ //
+
+ print "</div>";
+ }
+
+ function hook_article_filter($article) {
+ $owner_uid = $article["owner_uid"];
+
+
+ return $article;
+
+ }
+
+ function api_version() {
+ return 2;
+ }
+
+}
+?>
--- /dev/null
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users. This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it. (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.) You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+ To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+ For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have. You must make sure that they, too, receive or can get the
+source code. And you must show them these terms so they know their
+rights.
+
+ We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+ Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software. If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+ Finally, any free program is threatened constantly by software
+patents. We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary. To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+ The precise terms and conditions for copying, distribution and
+modification follow.
+ GNU GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License. The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language. (Hereinafter, translation is included without limitation in
+the term "modification".) Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+ 1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+ 2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+ a) You must cause the modified files to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+ b) You must cause any work that you distribute or publish, that in
+ whole or in part contains or is derived from the Program or any
+ part thereof, to be licensed as a whole at no charge to all third
+ parties under the terms of this License.
+
+ c) If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such
+ interactive use in the most ordinary way, to print or display an
+ announcement including an appropriate copyright notice and a
+ notice that there is no warranty (or else, saying that you provide
+ a warranty) and that users may redistribute the program under
+ these conditions, and telling the user how to view a copy of this
+ License. (Exception: if the Program itself is interactive but
+ does not normally print such an announcement, your work based on
+ the Program is not required to print an announcement.)
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works. But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+ 3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+ a) Accompany it with the complete corresponding machine-readable
+ source code, which must be distributed under the terms of Sections
+ 1 and 2 above on a medium customarily used for software interchange; or,
+
+ b) Accompany it with a written offer, valid for at least three
+ years, to give any third party, for a charge no more than your
+ cost of physically performing source distribution, a complete
+ machine-readable copy of the corresponding source code, to be
+ distributed under the terms of Sections 1 and 2 above on a medium
+ customarily used for software interchange; or,
+
+ c) Accompany it with the information you received as to the offer
+ to distribute corresponding source code. (This alternative is
+ allowed only for noncommercial distribution and only if you
+ received the program in object code or executable form with such
+ an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it. For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable. However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+ 4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License. Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+ 5. You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or
+distribute the Program or its derivative works. These actions are
+prohibited by law if you do not accept this License. Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+ 6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions. You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+ 7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all. For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices. Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+ 8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded. In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+ 9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation. If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+ 10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission. For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this. Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+ END OF TERMS AND CONDITIONS
+
--- /dev/null
+2003/11/02 - Sortie de la version initiale 1.0
--- /dev/null
+GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc., <http://fsf.org/>
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users. This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it. (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.) You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+ To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+ For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have. You must make sure that they, too, receive or can get the
+source code. And you must show them these terms so they know their
+rights.
+
+ We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+ Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software. If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+ Finally, any free program is threatened constantly by software
+patents. We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary. To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+ The precise terms and conditions for copying, distribution and
+modification follow.
+
+ GNU GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License. The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language. (Hereinafter, translation is included without limitation in
+the term "modification".) Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+ 1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+ 2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+ a) You must cause the modified files to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+ b) You must cause any work that you distribute or publish, that in
+ whole or in part contains or is derived from the Program or any
+ part thereof, to be licensed as a whole at no charge to all third
+ parties under the terms of this License.
+
+ c) If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such
+ interactive use in the most ordinary way, to print or display an
+ announcement including an appropriate copyright notice and a
+ notice that there is no warranty (or else, saying that you provide
+ a warranty) and that users may redistribute the program under
+ these conditions, and telling the user how to view a copy of this
+ License. (Exception: if the Program itself is interactive but
+ does not normally print such an announcement, your work based on
+ the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works. But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+ 3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+ a) Accompany it with the complete corresponding machine-readable
+ source code, which must be distributed under the terms of Sections
+ 1 and 2 above on a medium customarily used for software interchange; or,
+
+ b) Accompany it with a written offer, valid for at least three
+ years, to give any third party, for a charge no more than your
+ cost of physically performing source distribution, a complete
+ machine-readable copy of the corresponding source code, to be
+ distributed under the terms of Sections 1 and 2 above on a medium
+ customarily used for software interchange; or,
+
+ c) Accompany it with the information you received as to the offer
+ to distribute corresponding source code. (This alternative is
+ allowed only for noncommercial distribution and only if you
+ received the program in object code or executable form with such
+ an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it. For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable. However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+ 4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License. Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+ 5. You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or
+distribute the Program or its derivative works. These actions are
+prohibited by law if you do not accept this License. Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+ 6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions. You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+ 7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all. For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices. Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+ 8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded. In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+ 9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation. If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+ 10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission. For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this. Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ {description}
+ Copyright (C) {year} {fullname}
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+ Gnomovision version 69, Copyright (C) year name of author
+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+ Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+ {signature of Ty Coon}, 1 April 1989
+ Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.
--- /dev/null
+PHP Naive Bayesian Filter
+============================================================
+This library implements Naive Bayes classifier. Original Project developed by Loic d'Anterroches [loic xhtml.net]. This Library is very Usefull but is not Published now. so Salvage from [Internet Archive] and create Github Repositry.
+
+see more information to Original Readme.txt and [Original Page].
+And If there is a problem with the publication of this repository, I will close this repository.
+
+
+[loic xhtml.net]: <http://www.xhtml.net/php/PHPNaiveBayesianFilter>
+[Internet Archive]: <https://archive.org/>
+[Original Page]: <https://web.archive.org/web/20111211215027/http://www.xhtml.net/php/PHPNaiveBayesianFilter>
+
+Writing by Japanese
+------------------------------------------------------------
+このライブラリは単純ベイズ分類器を実装したライブラリです。元のプロジェクトはLoic d'Anterrochesが作成しています。非常に有益なライブラリですが、現在は公開されていないようです。そこでインターネットアーカイブからライブラリをサルベージし、Githubのレポジトリを作成しました。
+
+より詳しい情報はオリジナルのReadme.txtを参照してください。
+もし、このレポジトリの公開に問題があるようならば、このレポジトリを削除します。
+
+extract Original Readme
+------------------------------------------------------------
+> This file is part of PHP Naive Bayesian Filter.
+>
+> The Initial Developer of the Original Code is
+> Loic d'Anterroches [loic xhtml.net].
+> Portions created by the Initial Developer are Copyright (C) 2003
+> the Initial Developer. All Rights Reserved.
+>
+> PHP Naive Bayesian Filter is free software; you can redistribute it
+> and/or modify it under the terms of the GNU General Public License as
+> published by the Free Software Foundation; either version 2 of
+> the License, or (at your option) any later version.
+>
+> PHP Naive Bayesian Filter is distributed in the hope that it will
+> be useful, but WITHOUT ANY WARRANTY; without even the implied
+> warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+> See the GNU General Public License for more details.
+>
+> You should have received a copy of the GNU General Public License
+> along with Foobar; if not, write to the Free Software
+> Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
\ No newline at end of file
--- /dev/null
+/*
+ ***** BEGIN LICENSE BLOCK *****
+ This file is part of PHP Naive Bayesian Filter.
+
+ The Initial Developer of the Original Code is
+ Loic d'Anterroches [loic xhtml.net].
+ Portions created by the Initial Developer are Copyright (C) 2003
+ the Initial Developer. All Rights Reserved.
+
+ PHP Naive Bayesian Filter is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2 of
+ the License, or (at your option) any later version.
+
+ PHP Naive Bayesian Filter is distributed in the hope that it will
+ be useful, but WITHOUT ANY WARRANTY; without even the implied
+ warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Foobar; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+ ***** END LICENSE BLOCK *****
+*/
+
+
+** Presentation **
+
+Voici une implementation generale d'un filtre reposant sur le theoreme de Bayes.
+L'application la plus connue est le filtre anti-spam. Vous pouvez aussi
+l'utiliser pour faire de la classification automatique de documents.
+
+Ce programme se base sur la version simplifiee du theoreme de Bayes comme
+decrite par Ken Williams, ken@mathforum.org sur la page
+http://mathforum.org/~ken/bayes/bayes.html au 31/10/2003.
+
+Le systeme permet de maniere generale de faire la classification de documents
+textes dans differentes categories. Si vous voulez l'utiliser pour une
+classification de vos messages entre spam et non-spam, alors il vous faudra 2
+categories, une "spam" et une "nonspam".
+
+J'ai cree ce script car c'est une sujet a la mode en ce moment. Particulierement
+pour filtrer les commentaires et les trackbacks dans les blogs. Le systeme
+propose ici permet d'avoir plus que deux categories spam et non spam. Cela permet
+donc theoriquement de l'utiliser pour la classification dans de multiples
+categories.
+
+Un petit script 'index.php' vous permet de tester le systeme, ensuite vous
+pouvez inclure la classe dans vos scripts. Les fichiers class.naivebayesian.php
+et class.naivebayesianstorage.php peuvent aussi etre utilises avec la licence
+GNU Lesser General Public License Version 2.1 ou ulterieure.
+
+
+** Fonctionnalites **
+
+- Une classe avec la logique de base, une autre qui est l'interface de stockage.
+- Stockage des donnees dans une base de données pour le moment MySQL mais
+vous pouvez utiliser celle que vous voulez via l'interface de stockage.
+- Apprentissage
+- Desapprentissage
+- Archivage automatique des documents "reference"
+- L'interface de stockage par defaut utilise MySQL et repose sur deux classes
+d'Olivier Meunier.
+
+** Utilisation **
+
+Regardez le code de index.php
+Pour une bonne utilisation il vous faut creer une autre classe qui herite de
+NaiveBayesian pour avoir votre propre fonction pour ignorer les mots qui ne
+portent pas de sens particulier. Ceci n'est pas fait dans 'index.php'
+
+class votreclass extends NaiveBayesian
+{
+ function getIgnoreList()
+ {
+ return array('the', 'that', 'you', 'for', 'and');
+ }
+}
+
+
+** Des questions **
+
+Pouvez me contacter par email a loic xhtml.net, ou venir sur http://www.xhtml.net/
+
+
--- /dev/null
+<?php
+ /*
+ ***** BEGIN LICENSE BLOCK *****
+ This file is part of PHP Naive Bayesian Filter.
+
+ The Initial Developer of the Original Code is
+ Loic d'Anterroches [loic_at_xhtml.net].
+ Portions created by the Initial Developer are Copyright (C) 2003
+ the Initial Developer. All Rights Reserved.
+
+ Contributor(s):
+ See the source
+
+ PHP Naive Bayesian Filter is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2 of
+ the License, or (at your option) any later version.
+
+ PHP Naive Bayesian Filter is distributed in the hope that it will
+ be useful, but WITHOUT ANY WARRANTY; without even the implied
+ warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Foobar; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+ Alternatively, the contents of this file may be used under the terms of
+ the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ in which case the provisions of the LGPL are applicable instead
+ of those above.
+
+ ***** END LICENSE BLOCK *****
+ */
+
+ class NaiveBayesian {
+ /** min token length for it to be taken into consideration */
+ var $min_token_length = 3;
+ /** max token length for it to be taken into consideration */
+ var $max_token_length = 15;
+ /** list of token to ignore
+ @see getIgnoreList()
+ */
+ var $ignore_list = array();
+ /** storage object
+ @see class NaiveBayesianStorage
+ */
+ var $nbs = null;
+
+ function NaiveBayesian($nbs) {
+ $this->nbs = $nbs;
+
+ return true;
+ }
+
+ /** categorize a document.
+ Get list of categories in which the document can be categorized
+ with a score for each category.
+
+ @return array keys = category ids, values = scores
+ @param string document
+ */
+ function categorize($document) {
+ $scores = array();
+ $categories = $this->nbs->getCategories();
+ $tokens = $this->_getTokens($document);
+
+ // calculate the score in each category
+ $total_words = 0;
+ $ncat = 0;
+
+ while (list($category, $data) = each($categories)) {
+ $total_words += $data['word_count'];
+ $ncat++;
+ }
+
+ reset($categories);
+
+ while (list($category, $data) = each($categories)) {
+ $scores[$category] = $data['probability'];
+ // small probability for a word not in the category
+ // maybe putting 1.0 as a 'no effect' word can also be good
+ $small_proba = 1.0 / ($data['word_count'] * 2);
+
+ reset($tokens);
+
+ while (list($token, $count) = each($tokens)) {
+ if ($this->nbs->wordExists($token)) {
+ $word = $this->nbs->getWord($token, $category);
+
+ if ($word['count']) {
+ $proba = $word['count'] / $data['word_count'];
+ }
+ else {
+ $proba = $small_proba;
+ }
+
+ $scores[$category] *= pow($proba, $count) * pow($total_words / $ncat, $count);
+ // pow($total_words/$ncat, $count) is here to avoid underflow.
+
+ }
+ }
+ }
+
+ return $this->_rescale($scores);
+ }
+
+ /** training against a document.
+ Set a document as being in a specific category. The document becomes a reference
+ and is saved in the table of references. After a set of training is done
+ the updateProbabilities() function must be run.
+
+ @see updateProbabilities()
+ @see untrain()
+ @return bool success
+ @param string document id, must be unique
+ @param string category_id the category id in which the document should be
+ @param string content of the document
+ */
+ function train($doc_id, $category_id, $content) {
+ $ret = false;
+
+ // if this doc_id already trained, no trained
+ if (!$this->nbs->getReference($doc_id)) {
+ $tokens = $this->_getTokens($content);
+
+ while (list($token, $count) = each($tokens)) {
+ $this->nbs->updateWord($token, $count, $category_id);
+ }
+
+ $this->nbs->saveReference($doc_id, $category_id, $content);
+
+ $ret = true;
+ }
+ else {
+ $ret = false;
+ }
+
+ return $ret;
+ }
+
+ /** untraining of a document.
+ To remove just one document from the references.
+
+ @see updateProbabilities()
+ @see untrain()
+ @return bool success
+ @param string document id, must be unique
+ */
+ function untrain($doc_id) {
+ $ref = $this->nbs->getReference($doc_id);
+ $tokens = $this->_getTokens($ref['content']);
+
+ while (list($token, $count) = each($tokens)) {
+ $this->nbs->removeWord($token, $count, $ref['category_id']);
+ }
+
+ $this->nbs->removeReference($doc_id);
+
+ return true;
+ }
+
+ /** rescale the results between 0 and 1.
+
+ @author Ken Williams, ken@mathforum.org
+ @see categorize()
+ @return array normalized scores (keys => category, values => scores)
+ @param array scores (keys => category, values => scores)
+ */
+ function _rescale($scores) {
+ // Scale everything back to a reasonable area in
+ // logspace (near zero), un-loggify, and normalize
+ $total = 0.0;
+ $max = 0.0;
+ reset($scores);
+
+ while (list($cat, $score) = each($scores)) {
+ if ($score >= $max)
+ $max = $score;
+ }
+
+ reset($scores);
+ while (list($cat, $score) = each($scores)) {
+ $scores[$cat] = (float) exp($score - $max);
+ $total += (float) pow($scores[$cat], 2);
+ }
+
+ $total = (float) sqrt($total);
+
+ reset($scores);
+ while (list($cat, $score) = each($scores)) {
+ $scores[$cat] = (float) $scores[$cat] / $total;
+ }
+ reset($scores);
+
+ return $scores;
+ }
+
+ /** update the probabilities of the categories and word count.
+ This function must be run after a set of training
+
+ @see train()
+ @see untrain()
+ @return bool sucess
+ */
+ function updateProbabilities() {
+ // this function is really only database manipulation
+ // that is why all is done in the NaiveBayesianStorage
+ return $this->nbs->updateProbabilities();
+ }
+
+ /** Get the list of token to ignore.
+ @return array ignore list
+ */
+ function getIgnoreList() {
+ return array('the', 'that', 'you', 'for', 'and');
+ }
+
+ /** get the tokens from a string
+
+ @author James Seng. [http://james.seng.cc/] (based on his perl version)
+
+ @return array tokens
+ @param string the string to get the tokens from
+ */
+ function _getTokens($string) {
+ $rawtokens = array();
+ $tokens = array();
+ $string = $this->_cleanString($string);
+
+ if (count(0 >= $this->ignore_list)) {
+ $this->ignore_list = $this->getIgnoreList();
+ }
+
+ $rawtokens = split("[^-_A-Za-z0-9]+", $string);
+
+ // remove some tokens
+ while (list(, $token) = each($rawtokens)) {
+ $token = trim($token);
+ if (!(('' == $token) || (strlen($token) < $this->min_token_length) || (strlen($token) > $this->max_token_length) || (preg_match('/^[0-9]+$/', $token)) || (in_array($token, $this->ignore_list)))) {
+ $tokens[$token]++;
+ }
+ }
+
+ return $tokens;
+ }
+
+ /** clean a string from the diacritics
+
+ @author Antoine Bajolet [phpdig_at_toiletoine.net]
+ @author SPIP [http://uzine.net/spip/]
+
+ @return string clean string
+ @param string string with accents
+ */
+ function _cleanString($string) {
+ $diac = /* A */ chr(192) . chr(193) . chr(194) . chr(195) . chr(196) . chr(197) .
+ /* a */ chr(224) . chr(225) . chr(226) . chr(227) . chr(228) . chr(229) .
+ /* O */ chr(210) . chr(211) . chr(212) . chr(213) . chr(214) . chr(216) .
+ /* o */ chr(242) . chr(243) . chr(244) . chr(245) . chr(246) . chr(248) .
+ /* E */ chr(200) . chr(201) . chr(202) . chr(203) .
+ /* e */ chr(232) . chr(233) . chr(234) . chr(235) .
+ /* Cc */ chr(199) . chr(231) .
+ /* I */ chr(204) . chr(205) . chr(206) . chr(207) .
+ /* i */ chr(236) . chr(237) . chr(238) . chr(239) .
+ /* U */ chr(217) . chr(218) . chr(219) . chr(220) .
+ /* u */ chr(249) . chr(250) . chr(251) . chr(252) .
+ /* yNn */ chr(255) . chr(209) . chr(241);
+
+ return strtolower(strtr($string, $diac, 'AAAAAAaaaaaaOOOOOOooooooEEEEeeeeCcIIIIiiiiUUUUuuuuyNn'));
+ }
+
+ }
--- /dev/null
+<?php
+
+ class NaiveBayesianNgram extends NaiveBayesian {
+ var $N = 2;
+
+ /**
+ * add Parameter for ngram
+ *
+ * @param NaiveBayesianStorage $nbs
+ * @param ngram's N $n
+ * @return boolean
+ */
+ function __construct($nbs, $n = 2) {
+ parent::__construct($nbs);
+
+ $this->N = $n;
+
+ return true;
+ }
+
+ /**
+ * override method for ngram
+ *
+ * @param string $string
+ * @return multiple
+ */
+ function _getTokens($string) {
+ $tokens = array();
+
+ if (mb_strlen($string)) {
+ for ($i = 0; $i < mb_strlen($string) - $this->N; $i++) {
+ $wd = mb_substr($string, $i, $this->N);
+
+ if (mb_strlen($wd) == $this->N) {
+ if (!array_key_exists($wd, $tokens)) {
+ $tokens[$wd] = 0;
+ }
+
+ $tokens[$wd]++;
+ }
+ }
+ }
+
+ if (count($tokens)) {
+ // remove empty value
+ $tokens = array_filter($tokens);
+ }
+
+ return $tokens;
+ }
+
+ }
--- /dev/null
+<?php
+ /*
+ ***** BEGIN LICENSE BLOCK *****
+ This file is part of PHP Naive Bayesian Filter.
+
+ The Initial Developer of the Original Code is
+ Loic d'Anterroches [loic_at_xhtml.net].
+ Portions created by the Initial Developer are Copyright (C) 2003
+ the Initial Developer. All Rights Reserved.
+
+ Contributor(s):
+
+ PHP Naive Bayesian Filter is free software; you can redistribute it
+ and/or modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2 of
+ the License, or (at your option) any later version.
+
+ PHP Naive Bayesian Filter is distributed in the hope that it will
+ be useful, but WITHOUT ANY WARRANTY; without even the implied
+ warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Foobar; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+ Alternatively, the contents of this file may be used under the terms of
+ the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ in which case the provisions of the LGPL are applicable instead
+ of those above.
+
+ ***** END LICENSE BLOCK *****
+ */
+
+ /** Access to the storage of the data for the filter.
+
+ To avoid dependency with respect to any database, this class handle all the
+ access to the data storage. You can provide your own class as long as
+ all the methods are available. The current one rely on a MySQL database.
+
+ methods:
+ - array getCategories()
+ - bool wordExists(string $word)
+ - array getWord(string $word, string $categoryid)
+
+ */
+ class NaiveBayesianStorage {
+ var $con = null;
+ var $owner_uid = null;
+
+ function NaiveBayesianStorage($owner_uid) {
+ $this->con = Db::get();
+ $this->owner_uid = $owner_uid;
+
+ return true;
+ }
+
+ /** get the list of categories with basic data.
+
+ @return array key = category ids, values = array(keys = 'probability', 'word_count')
+ */
+ function getCategories() {
+ $categories = array();
+ $rs = $this->con->query('SELECT * FROM ttrss_plugin_af_sort_bayes_categories');
+
+ while ($this->con->fetch_assoc($rs)) {
+ $categories[$rs['category_id']] = array('probability' => $rs['probability'],
+ 'word_count' => $rs['word_count']
+ );
+
+
+ }
+
+ return $categories;
+ }
+
+ /** see if the word is an already learnt word.
+ @return bool
+ @param string word
+ */
+ function wordExists($word) {
+ $rs = $this->con->query("SELECT * FROM ttrss_plugin_af_sort_bayes_wordfreqs WHERE word='" . $this->con->escape_string($word) . "'");
+
+ return $this->con->num_rows($rs) != 0;
+ }
+
+ /** get details of a word in a category.
+ @return array ('count' => count)
+ @param string word
+ @param string category id
+ */
+ function getWord($word, $category_id) {
+ $details = array();
+
+ $rs = $this->con->query("SELECT * FROM ttrss_plugin_af_sort_bayes_wordfreqs WHERE word='" . $this->con->escape_string($word) . "' AND category_id='" . $this->con->escape_string($category_id) . "'");
+
+ if ($this->con->num_rows($rs) == 0 ) {
+ $details['count'] = 0;
+ }
+ else {
+ $details['count'] = $rs['count'];
+ }
+
+ return $details;
+ }
+
+ /** update a word in a category.
+ If the word is new in this category it is added, else only the count is updated.
+
+ @return bool success
+ @param string word
+ @param int count
+ @paran string category id
+ */
+ function updateWord($word, $count, $category_id) {
+ $oldword = $this->getWord($word, $category_id);
+
+ if (0 == $oldword['count']) {
+ return $this->con->execute("INSERT INTO ttrss_plugin_af_sort_bayes_wordfreqs (word, category_id, count) VALUES ('" . $this->con->escape_string($word) . "', '" . $this->con->escape_string($category_id) . "', '" . $this->con->escape_string((int) $count) . "')");
+ }
+ else {
+ return $this->con->execute("UPDATE ttrss_plugin_af_sort_bayes_wordfreqs SET count = count + " . (int) $count . " WHERE category_id = '" . $this->con->escape_string($category_id) . "' AND word = '" . $this->con->escape_string($word) . "'");
+ }
+ }
+
+ /** remove a word from a category.
+
+ @return bool success
+ @param string word
+ @param int count
+ @param string category id
+ */
+ function removeWord($word, $count, $category_id) {
+ $oldword = $this->getWord($word, $category_id);
+
+ if (0 != $oldword['count'] && 0 >= ($oldword['count'] - $count)) {
+ return $this->con->execute("DELETE FROM ttrss_plugin_af_sort_bayes_wordfreqs WHERE word='" . $this->con->escape_string($word) . "' AND category_id='" . $this->con->escape_string($category_id) . "'");
+ }
+ else {
+ return $this->con->execute("UPDATE ttrss_plugin_af_sort_bayes_wordfreqs SET count = count - " . (int) $count . " WHERE category_id = '" . $this->con->escape_string($category_id) . "' AND word = '" . $this->con->escape_string($word) . "'");
+ }
+ }
+
+ /** update the probabilities of the categories and word count.
+ This function must be run after a set of training
+
+ @return bool sucess
+ */
+ function updateProbabilities() {
+ // first update the word count of each category
+ $rs = $this->con->query("SELECT category_id, SUM(count) AS total FROM ttrss_plugin_af_sort_bayes_wordfreqs WHERE 1 GROUP BY category_id");
+ $total_words = 0;
+
+ while ($this->con->fetch_assoc($rs)) {
+ $total_words += $rs['total'];
+
+ }
+
+ $rs->moveStart();
+
+ if ($total_words == 0) {
+ $this->con->execute("UPDATE ttrss_plugin_af_sort_bayes_categories SET word_count=0, probability=0 WHERE 1");
+
+ return true;
+ }
+
+ while ($this->con->fetch_assoc($rs)) {
+ $proba = $rs['total'] / $total_words;
+ $this->con->execute("UPDATE ttrss_plugin_af_sort_bayes_categories SET word_count=" . (int) $rs['total'] . ", probability=" . $proba . " WHERE category_id = '" . $rs['category_id'] . "'");
+
+ }
+
+ return true;
+ }
+
+ /** save a reference in the database.
+
+ @return bool success
+ @param string reference if, must be unique
+ @param string category id
+ @param string content of the reference
+ */
+ function saveReference($doc_id, $category_id, $content) {
+
+ return $this->con->execute("INSERT INTO ttrss_plugin_af_sort_bayes_references (id, category_id, content) VALUES ('" . $this->con->escape_string($doc_id) . "', '" . $this->con->escape_string($category_id) . "', '" . $this->con->escape_string($content) . "')");
+ }
+
+ /** get a reference from the database.
+
+ @return array reference( category_id => ...., content => ....)
+ @param string id
+ */
+ function getReference($doc_id) {
+ $ref = array();
+ $rs = $this->con->query("SELECT * FROM ttrss_plugin_af_sort_bayes_references WHERE id='" . $this->con->escape_string($doc_id) . "'");
+
+ if ($this->con->num_rows($rs) == 0 ) {
+ return $ref;
+ }
+
+ $ref['category_id'] = $rs['category_id'];
+ $ref['content'] = $rs['content'];
+ $ref['id'] = $rs['id'];
+
+ return $ref;
+ }
+
+ /** remove a reference from the database
+
+ @return bool sucess
+ @param string reference id
+ */
+ function removeReference($doc_id) {
+
+ return $this->con->execute("DELETE FROM ttrss_plugin_af_sort_bayes_references WHERE id='" . $this->con->escape_string($doc_id) . "'");
+ }
+
+ }
projects / tt-rss.git / commitdiff
