Question

Given a document with the terms A, B and C with the following frequencies A: 3,...

Given a document with the terms A, B and C with the following frequencies A: 3, B: 2, C: 1. The document belongs to a collection of 10,000 docs. The document frequencies are: A: 50, B: 1300, C: 250. Compute the TF-IDF and compare them.

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Answer #1

Given a document with the terms A, B and C with the following frequencies A: 3, B: 2, C: 1

The document belongs to a collection of 10,000 docs. The document frequencies are: A: 50, B:1300, C:250

We know,

Term frequency is given by:

where fij = frequency of term iin document j

Inverse document frequency:

and

Now:

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