Information retrieval systems are designed to satisfy a user. To make a user happy with the quality of their recall. It’s important we understand that. Every system and its inputs and outputs are designed to provide the best user experience.
From the training data to similarity scoring and the machine’s ability to “understand” our tired, sad bullshit – this is the third in a series I’ve titled, information retrieval for morons.

TL;DR
- In the vector space model, the distance between vectors represents…

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