What’s in a word?

By Medium - 2020-12-28

Description

Why tf-idf sometimes fails to accurately capture word importance, and what we can use instead

Summary

Getting Started What’s in a word?
As I mentioned above, this is a simple yet powerful tool, and gives generally good estimates of which words define documents in a corpus.
To see this in action, consider the same setup from above, this time with apple making up 10% of words in document A.
If apple did not appear at all in document B, the tf-idf value would be relatively high.
However, as we can see in the table, the tf-idf value is actually zero, suggesting the word is not at all unique or important to the album.

Topics

NLP (0.16)
Security (0.07)
Backend (0.04)

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