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Plagiarism: Crot Plagiarism Checker

plagiarism_crot
Maintained by Picture of Sergey Butakov Sergey Butakov
This FREE plugin is aimed at digital plagiarism detection: it uncovers assignments copied from peers at the same institution. The module is language independent. Maintainer: Sergey Butakov More information: crotsoftware.com
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Block is based on document fingerprinting technologies for pair-wise document comparison.

Please note that as of August 01, 2012 the block does not perform global / Internet search due to monetization of Bing search engine API.

 

A distinctive feature of this plug-in is that all local checkups are happening on your Moodle server without sending any documents outside. Thus, in contrast to other available solutions, the plug-in does not impose any issues related to student intellectual property protection. 

 

This module is the successor of  Crot for Moodle block: http://moodle.org/mod/data/view.php?d=13&rid=2141&filter=1. This version is tailored for the plagiarism API in Moodle 2.x.

This is standalone module that doesn't require a connection to the external plagiarism detection service. 

Maintainers: Sergey Butakov, Svetlana Kim

More information:  Crotsoftware.com

Screenshots

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Contributors

Picture of Sergey Butakov
Sergey Butakov (Lead maintainer)
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  • Picture of Graham Bowman
    Thu, Mar 6, 2014, 8:00 AM
    I've managed to get the plugin working. I think partly it was that I hadn't used it before so didn't know what to expect.

    I made a new assignment and submitted 2 fake but similar entries and it identified high % similarities. There are all sorts of dubugging errors but the functionality seems to work.
  • Picture of Daniel Villareal
    Mon, Mar 24, 2014, 11:01 PM
    Hi to all, if you want to work the global search of crot let's make a collaboration thank you :D
  • Picture of Sergey Butakov
    Mon, Mar 24, 2014, 11:12 PM
    which search engine are you planning to use?
  • Picture of Paulo Henrique Souto Maior Serrano
    Tue, Jun 17, 2014, 11:29 AM
    Anybody tried it on Moodle 2.7 ? Is it working well ?
  • Picture of sher shahraz
    Tue, Apr 7, 2015, 6:05 PM
    unable to access crotpro/settings.php


  • Picture of sher shahraz
    Tue, Apr 7, 2015, 6:05 PM
    sad
  • Picture of Daniel Kim
    Mon, Apr 27, 2015, 8:55 PM
    Have never used some kind of plagiarism checkers, it is good that now everyone is able to use plug-in plagiarism detectors. Before this one I only used paid checkers https://unplag.com/ and turnitin.com/
  • Picture of Thanuci Silva
    Wed, Sep 16, 2015, 11:59 PM
    Am I able to use this plugin for moodle assignments written in Portuguese?
  • Picture of Sergey Butakov
    Thu, Sep 17, 2015, 1:54 AM
    yes, its language independent.
  • Picture of Blair F.
    Fri, Sep 18, 2015, 1:07 AM
    Any plans to update this for newer Moodle versions? I tried installing in 2.8 and get the following errors. Unfortunately, I'm now stuck on the plugins check page. Whoops. Good thing it's our test site. smile
    ---------------------------------------
    plagiarism_crot

    Coding error detected, it must be fixed by a programmer: Invalid table name {plagiarism_crot_submission_pair}: name is too long. Limit is 28 chars.

    Debug info:
    Error code: codingerror
    Stack trace:

    line 287 of /lib/ddl/sql_generator.php: coding_exception thrown
    line 209 of /lib/ddl/mysql_sql_generator.php: call to sql_generator->getCreateTableSQL()
    line 248 of /lib/ddl/sql_generator.php: call to mysql_sql_generator->getCreateTableSQL()
    line 409 of /lib/ddl/database_manager.php: call to sql_generator->getCreateStructureSQL()
    line 364 of /lib/ddl/database_manager.php: call to database_manager->install_from_xmldb_structure()
    line 502 of /lib/upgradelib.php: call to database_manager->install_from_xmldb_file()
    line 1628 of /lib/upgradelib.php: call to upgrade_plugins()
    line 434 of /admin/index.php: call to upgrade_noncore()
  • Picture of Sergey Butakov
    Fri, Sep 18, 2015, 1:27 AM
    There is an easy fix for that. just check forum
  • Picture of Blair F.
    Fri, Sep 18, 2015, 1:47 AM
    Sorry, but I don't see any "easy" fix in the forum (which, for those trying to find it is here: https://moodle.org/mod/forum/discuss.php?d=116512) . The only thing I found required changes to xmldb_table.php . Was that what you were referring to? That's not something I have access to, so I guess this plugin is not usable for us, unfortunately. I'll keep my eyes open for an official update to the plugin.
  • Picture of Mikael Wazikov
    Wed, Oct 28, 2015, 10:50 PM
    I'm trying to choose between Crot and Unplag Plagiarism plugin for Moodle. Does Crot use only Bing search engine? On https://unplag.com/ is said that Unplag checks against Google and Yahoo.
  • Picture of Mariya Kulygina
    Mon, Nov 16, 2015, 6:19 PM
    Will this plugin work for the workshops, or is it made only for assignments?
  • Picture of Farhat Ali
    Wed, May 18, 2016, 5:29 PM
    Thank you for contribution. I've some problem when I created an account key is not displaying.

    Regards,
    Farhat Ali
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