Plagiarism Check types (plagiarism check scope)

[Mike Sanders]

This sections explains what Plagiarism check types are supported by Plagiarism Detector and their scope.

Currently Plagiarism Detector Supports the following types of Plagiarism Checks:

1. Global Internet Check (includes  SciPap check).
2. Custom Database Check (PDAS) (Chek against your own PDAS Database, that allows to store very large amounts of documents).
3. Combined Check [Internet + PDAS Database].
4. Check against a Local Folder
5. Check 2 Documents against each other.
6. Check against our internal scientific papers Database (SciPap).



1. Global Internet Check.

It runs a check against 2 major search engines: Google and Bing.  Also includes results from our SciPap database.

a) "If it is on the internet - it will be probably detected".
b) If it is not in the search index - it will not be detected.
c) If it is in the search index - Plagiarism Detector can still miss it (bad things happen too).

Most common reasons:
- Zipf law.
- Bad search engine SERP relevancy (Recall\Precision).
- Fingerprint miss.


2. Database Check (PDAS = Plagiarism Detector Accumulator Server).

PDAS is a separately sold product that integrates with Plagiarism Detector Client programs.
Plagiarism Detector - is a Client program.
PDAS - Plagiarism Detector Accumulator Server - is a Server database.

To run checks:
1. You need to have a special need for this :-). You need to have a corpus of documents or a little library.
2. You need to download PDAS (free demo is available).
3. You need to install PDAS.
4. You need to import your corpus of documents or a little library into PDAS. This requires some time and effort.
5. At this point you will be able to run checks against your brand new PDAS Database.
6. Start the client (any Plagiarism Detector), it will detect PDAS instance and you are ready to go!


3. Combined check.
Combines results from both Internet and PDAS  check to a single report.


4. Check against Local Folder Check.

This is pretty self-explanatory. If you have a folder full of many documents and you need to
figure out if there is cross-plagiarism in between. This is the right place to start!
One thing to note - you must select the 1st document
via the Document Manager, and the target folder to check against - you need to select at the last
step of the New Check Wizard.


5. Check 2 Documents against each other.

This is pretty self-explanatory. One thing to note - you must select the 1st document
via the Document Manager, and the second one - you need to select at the last step of the New Check Wizard.


6. SciPap check.

Check against our internal scientific papers Database (SciPap). Important note: no clients' document are added to this database. As of now this is more a supplement for the Internet check.