[KongchangAI]
ConceptExact Match / EM

Exact Match

A strict evaluation metric commonly used in question answering and information extraction tasks, in which a model output counts as correct only when it is fully identical to the reference answer after normalization.

Timeline (last 90 days)

Oct 23

The system's knowledge base retrieval adopts a hybrid scheme of vector retrieval plus exact matching, first computing semantic similarity and then performing secondary ranking by urgency and knowledge freshness.

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Oct 19

Of the 31 test paraphrases, AILegal's exact-match stage resolved 12; the soft-match stage then added suggestions for another 14, of which 8 were correct, for a precision of about 57%.

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Oct 17

There are two approaches to trajectory matching: exact matching suits scenarios with fixed flows, while subsequence matching is looser and only requires key steps to appear in order.

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Oct 11

Exact matching is fast but prone to missing cases where the same person uses different contact information, while fuzzy matching has broader coverage but higher computational cost.

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