Explain and give example for the following matrices used in IR:

1. Term-document occurrence matrix.

2. Term-term cooccurrence matrix.

3. Term-term correlation matrix.

4. Term-term similarity matrix.

5. Term-term coweights matrix.

6. Term-term distance matrix (*).

7. Covariance matrix (*).

 

(*) PS. I forgot to list these other matices.

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