6. The method of claim 1 , further comprising: for each query: identifying a plurality of images; for each image: applying the image relevance model to content feature values of the image; and assigning an image relevance score to the image based on an application of the image relevance model to the content feature values, the image relevance score being a relevancy measure of the image to the query.
6. The method of claim 1 , further comprising: for each query: identifying a plurality of images; for each image: applying the image relevance model to content feature values of the image; and assigning an image relevance score to the image based on an application of the image relevance model to the content feature values, the image relevance score being a relevancy measure of the image to the query. 7. The method of claim 6 , wherein applying the image relevance model to the content feature values comprises determining a dot product of the image relevance model and the content feature values.