| 摘要 |
A system and method for information retrieval are presented. A first query is executed against a knowledge base using a natural language query to generate a result set. The knowledge base identifies a plurality of items, each associated with at least one annotation identifying at one of a plurality of entities in a knowledge model that defines a plurality of entities and interrelationships between one or more of the plurality of entities for a knowledge domain. The result set identifies a first set of items in the knowledge base. A graph of one or more of the entities in the knowledge model database is generated using a plurality of terms from the result set and the natural language query. A selection of one of the entities in the graph can be received from the client computer and used to restrict the number of items in the result set.
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