Numerical representations used to compare text or other items, including their interpretation and role in retrieval.
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A retrieval system returns a top result with a similarity score of 0.83. Most people read that number as "83% relevant" or "83% likely to be correct." It…
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Two retrievers return two different top-5 lists for the same query. You merge them, and the merged order looks like it was decided by a coin flip. It…
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Most teams add hybrid retrieval because a vendor page promised better accuracy, then never check whether it helped their own corpus. This exercise forces…
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A query returns a sentence the source no longer contains. The team blames the model. The model is innocent — the index is still holding a chunk that was…
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You search your company's help docs for "how do I reset my password?" and get nothing useful. You know the answer is in there—you've read the page…
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