17. The method of claim 16 , wherein: the generating of the relevance score is based on an average feature vector that corresponds to the text token and indicates the identified image feature is a component of the average feature vector of the text token.
16. The method of claim 12 , wherein: the text token is a reference text token correlated with the identified image feature by the generated data structure; and the method further comprises: receiving a query that includes a query text token; determining that the query text token matches the reference text token correlated with the identified image feature; and generating a relevance score that represents a degree of relevance between the query and the item image that depicts the item, the generating of the relevant score being based on the data structure that correlates the image feature exhibited by the item image with the text token included in the item description.