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2. Bibliographic coupling - Wikipedia

   en.wikipedia.org/wiki/Bibliographic_coupling

   Bibliographic coupling occurs when two works reference a common third work in their bibliographies. It is an indication that a probability exists that the two works treat a related subject matter. [1] Two documents are bibliographically coupled if they both cite one or more documents in common. The "coupling strength" of two given documents is ...

3. Content similarity detection - Wikipedia

   en.wikipedia.org/wiki/Content_similarity_detection

   A study was conducted to test the effectiveness of similarity detection software in a higher education setting. One part of the study assigned one group of students to write a paper. These students were first educated about plagiarism and informed that their work was to be run through a content similarity detection system.

4. SimRank - Wikipedia

   en.wikipedia.org/wiki/SimRank

   SimRank is a general approach that exploits the object-to-object relationships found in many domains of interest. On the Web, for example, two pages are related if there are hyperlinks between them. A similar approach can be applied to scientific papers and their citations, or to any other document corpus with cross-reference information. In ...

5. Turnitin - Wikipedia

   en.wikipedia.org/wiki/Turnitin

   This prevents one student from using another student's paper, by identifying matching text between papers. In addition to student papers, the database contains a copy of the publicly accessible Internet, with the company using a web crawler to continually add content to Turnitin's archive. It also contains commercial and/or copyrighted pages ...

6. Co-citation - Wikipedia

   en.wikipedia.org/wiki/Co-citation

   Co-citation is the frequency with which two documents are cited together by other documents. [1] If at least one other document cites two documents in common, these documents are said to be co-cited. The more co-citations two documents receive, the higher their co-citation strength, and the more likely they are semantically related. [1]

7. Citation analysis - Wikipedia

   en.wikipedia.org/wiki/Citation_analysis

   Citation-based plagiarism detection (CbPD) [36] relies on citation analysis, and is the only approach to plagiarism detection that does not rely on the textual similarity. [37] CbPD examines the citation and reference information in texts to identify similar patterns in the citation sequences. As such, this approach is suitable for scientific ...

8. Structural similarity index measure - Wikipedia

   en.wikipedia.org/wiki/Structural_similarity...

   The structural similarity index measure (SSIM) is a method for predicting the perceived quality of digital television and cinematic pictures, as well as other kinds of digital images and videos. It is also used for measuring the similarity between two images.

9. Okapi BM25 - Wikipedia

   en.wikipedia.org/wiki/Okapi_BM25

   Here is an interpretation from information theory. Suppose a query term appears in () documents. Then a randomly picked document will contain the term with probability () (where is again the cardinality of the set of documents in the collection).