| 摘要 |
An information supplying server includes a retrieval request receiver (101) for receiving a query containing a keyword, a retriever (102) for transmitting a received query to a retrieval server identified by a retrieval destination identifier associated with a superordinate concept of received keyword in retrieval destination data, and receiving a retrieved data from the retrieval server, a narrowing word determiner (103) for determining a narrowing word in accordance with a priority determined from a provisional priority set to a narrowing word candidate as a candidate of narrowing word for use to narrow down information from retrieved data, and a degree of relevancy set to a superordinate concept of narrowing word candidate and a superordinate concept of the keyword, and a supply data transmitter (107) configured to transmit to the client terminal a supply data as a synthesis of the retrieved data with a new query having a determined narrowing word combined with the received query.
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