Query-level feature: Difference between revisions

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A '''query level feature''' or '''QLF''' is a ranking feature utilized in a [[machine-learned ranking]] algorithm.
 
 
A '''query level feature''' or '''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 [[Probabilistic_relevance_model_Probabilistic relevance model (BM25)|BM25F]] values for the query?
 
 
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{{Uncategorized|date=February 2014}}