18. The system of claim 17 , wherein the instructions further cause the processing device to assign the scores based at least in part on context similarity between contexts of particular candidate mentions corresponding to at least two distinct named entities in the list.
17. A system comprising: a processing device; and a storage device storing computer-executable instructions which, when executed by the processing device, cause the processing device to: receive and store a list of multiple different named entities, the multiple different named entities in the list pertaining to a particular subject matter domain, determine and store a set of candidate mentions, each candidate mention being a string representing a corresponding named entity in the list of multiple different named entities, the set of candidate mentions including true mentions and false mentions occurring in a collection of documents, the false mentions corresponding to different meanings of the multiple different named entities that do not pertain to the particular subject matter domain, assign scores to individual candidate mentions of the set of candidate mentions, and distinguish between the true mentions and the false mentions within the set of candidate mentions based on the scores.