To provide a technical document retrieval device capable of clearly specifying a mutual relation among retrieved technical documents.
This technical document retrieval device for retrieving technical documents such as a patent document and a technical article is provided with a retrieval means 12 and a related document extraction means 24 for extracting the information of a reference document quoted in each technical document. The related document extraction means extracts the information of the reference document quoted by the original technical document; the retrieval means retrieves the technical document corresponding to the reference document extracted by the related document extraction means; the related document extraction means extracts the information of the reference document quoted by the technical document retrieved by the retrieval means; and the respective technical documents are displayed so that relations among them can be visually understood by repeating those operations. Since connection among the documents can be retrieved and displayed, a user can easily grasp a technical system and a technical trend.
INABA MITSUAKI
SUGANO YUJI
| JPH11195018A | 1999-07-21 | |||
| JPH08272818A | 1996-10-18 | |||
| JPH09146968A | 1997-06-06 |
Ohashi
Masanori Hirano
Hayashi Hiroki