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## match-features


  Contained in [rank-profile](https://docs.vespa.ai/en/reference/schema-reference.html#rank-profile).
  List of [rank features](https://docs.vespa.ai/en/reference/rank-features.html) to be included with each result hit,
  in the [matchfeatures](https://docs.vespa.ai/en/reference/default-result-format.html#matchfeatures) field.
  Also see [
  feature values in results](https://docs.vespa.ai/en/ranking-expressions-features.html#accessing-feature-function-values-in-results).


  If not specified, the features are as specified in the parent profile (if any).
  To inherit the features from the parent profile and specify additional features,
  specify explicitly that the features should be inherited from the parent as shown below,
  also see [schema inheritance](https://docs.vespa.ai/en/schemas.html#schema-inheritance).

To disable match-features from parent rank profiles, use `match-features {}`.

  match-features is similar to [summary-features](https://docs.vespa.ai/en/reference/schema-reference.html#summary-features),
  but the rank features specified here are computed in the first protocol phase of
  [multi-protocol query execution](https://docs.vespa.ai/en/searcher-development.html#multiphase-searching),
  also called the match protocol phase.

  This gives a different performance trade-off, for details see
  [
    feature values in results](https://docs.vespa.ai/en/ranking-expressions-features.html#accessing-feature-function-values-in-results).

```
match-features: [feature] [feature]…
``` 

or
```
match-features [inherits parent-profile]? {
    [feature]
    [feature]
}
``` 


Any number of ranking features separated by space can be listed on each line.





[Read more](https://docs.vespa.ai/en/reference/schema-reference.html#match-features)