Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for cross-language information retrieval. In general, one aspect of the subject matter described in this specification can be embodied in methods that include the actions of identifying a structured collection of documents, the collection of documents being organized according to a hierarchy of categories; extracting entities from structured collection of document; assigning language scores to each document in the collection of documents; assigning language scores to entities based on scores of associated documents of the collection of documents; and generating a mapping between entities and language scores.