Searchplex ID Retrieval terminology registry

Metric

Average Precision

Canonical ID https://id.searchplex.net/average-precision/

A ranking evaluation metric that averages precision values at the ranks where relevant items are retrieved for a single query or topic.

Also called

  • AP

Scope

Average Precision is a per-query or per-topic metric. Mean Average Precision averages AP values across multiple queries or topics.

Part of family

Evaluates

Not equivalent to

  • Average Precision is not Mean Average Precision. Average Precision is computed for one query or topic; MAP is the mean of AP over many queries or topics.
  • Average Precision is not Precision@K. Precision@K measures precision at a fixed cutoff; Average Precision aggregates precision at relevant ranks across the ranked list.

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