A query-level feature (QLF) is a ranking feature utilized in a machine-learned ranking algorithm. Example QLFs: How many times has this query been run in the last…
A query-level feature (QLF) is a ranking feature utilized in a machine-learned ranking algorithm.
Example QLFs: How many times has this query been run in the last month? How many words are in the query? What is the sum/average/min/max/median of the BM25F values for the query?
References
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