Methods, systems, and apparatus, including computer programs encoded on computer storage media, for name detection. A method includes generating a raw name detection model using a collection of family names and an annotated corpus including a collection of n-grams. The method includes applying the raw name detection model to a collection of semi-structured data to form annotated semi-structured data identifying n-grams identifying names and n-grams not identifying names and applying the raw name detection model to a large unannotated corpus to form a large annotated corpus data identifying n-grams of the large unannotated corpus identifying names and n-grams not identifying names. The method includes generating a name detection model, including deriving a name model using the annotated semi-structured data identifying names and the large annotated corpus data identifying names, deriving a not-name model using the semi-structured data not identifying names, and deriving a language model using the large annotated corpus.
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