US Patent 9098582 Identifying relevant document languages through link context

Methods, systems, and apparatus, including computer program products, for identifying languages that are relevant to resource. In an aspect, language features are identified for incoming resource links to a resource and outgoing resource links from the resource. The language features or use by a language classification model to generate language relevance scores. The language relevance scores for each of the incoming resource links and outgoing resource links are used to generate a corresponding relevance measure for each of a plurality of languages. Each relevance measure is a measure of the relevance of the language to the resource.