Information Retrieval

How can we deal with a huge dataset tdidf vector

I have a problem with assignment 4 that what we define the score of the word without appearing in the document collections.

How can we decide which damping factor to use in the pagerank algorithm?

Why the computation of authority scores and hub scores uses power iteration.

what is identifying a critical subset mean in a post-search analysis?

What dose the area under the precision recall curve mean?