... the documents to roughly describe back-ground of entity. After establishing the vector space model (VSM) for each entity mention of the type, we adopt a clustering toolkit (CLUTO) to further ... “revoke”, the position “doctor”, the person whose license should be revoked, and the time dur-ing which the event happened: Event type End-Position Trigger revoke a single doctor Role=Person ... infer another one with the help of the entities of the same background. In a word, the cross-entity inference, we pro-posed for event extraction, bases on the hypothesis: Entities of the consistent...