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Example: HyDE improves specific temporal queries
- First, we query without transformation: The same query string is used for embedding lookup and also summarization.
- Now, we use to generate a hypothetical document and use it for embedding lookup.
- In this example, improves output quality significantly, by hallucinating accurately what Paul Graham did after RISD (see below), and thus improving the embedding quality, and final output.
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Failure case 1: HyDE may mislead when query can be mis-interpreted without context.
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Failure case 2: HyDE may bias open-ended queries