A matching feature is a numerical or boolean value which can be used to determine how likely it is for the candidate to be the correct entity. It contains the following fields:
id
A string which identifies the feature, such as "name_tfidf" or "pagerank". This id must be unique among all the matching features returned for a given candidate;
value
The value of the feature for the candidate, which can be any boolean or numerical value.
Multiple matching features are often used in combination to provide the final matching score (available in the score field). By exposing individual features in their responses, services make it possible for clients to compute matching scores which fit their use cases better.
https://reconciliation-api.github.io/specs/latest/#dfn-matching-feature