Crot Plagiarism Checker

Plagiarism ::: plagiarism_crot
Maintained by 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
Latest release:
21 sites
17 downloads
13 fans
Current versions available: 2

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

Screenshot #0

Contributors

Sergey Butakov (Lead maintainer)
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Comments

  • Daniel Kim
    Mon, 27 Apr 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/
  • Thanuci Silva
    Wed, 16 Sept 2015, 11:59 PM
    Am I able to use this plugin for moodle assignments written in Portuguese?
  • Sergey Butakov
    Thu, 17 Sept 2015, 1:54 AM
    yes, its language independent.
  • Blair F.
    Fri, 18 Sept 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()
  • Sergey Butakov
    Fri, 18 Sept 2015, 1:27 AM
    There is an easy fix for that. just check forum
  • Blair F.
    Fri, 18 Sept 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.
  • Mikael Wazikov
    Wed, 28 Oct 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.
  • Mariya Kulygina
    Mon, 16 Nov 2015, 6:19 PM
    Will this plugin work for the workshops, or is it made only for assignments?
  • Farhat Ali
    Wed, 18 May 2016, 5:29 PM
    Thank you for contribution. I've some problem when I created an account key is not displaying.

    Regards,
    Farhat Ali
  • Claite Wilson
    Mon, 31 Oct 2016, 6:15 PM
    a great plugin...which combined with essay samples would make it easier for any student write plagiarism free, original essays
  • Ricardo Caiado
    Mon, 20 Feb 2017, 8:27 PM
    Hi,

    Is there any chance of this plugin being upgraded to Moodle version 3.2?

    Ricardo
  • Janey Crosby
    Tue, 25 Apr 2017, 3:59 PM
    Wow, I've never heard about this tool. I personally use this plagiarism checker https://plagiarismsearch.com because it accepts all text formats. I'll try the suggested one smile
  • Krisha Moeller
    Sat, 2 Dec 2017, 3:41 AM
    I'm trying to install this plugin, but I keep getting the following error message:

    Validating plagiarism_crot ... Error
    [Error] Plugin does not declare its component name [null]
    Installation aborted due to validation failure

    What should I do? Thank you for your help!
  • Ricardo Caiado
    Sun, 18 Mar 2018, 4:40 AM
    Hi,
    Any updates do Moodle 3.4?

    Ricardo
  • Vivek Kumar
    Mon, 30 Apr 2018, 2:11 AM
    Thank you so much.
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