公开(公告)号：US20230359653A1

公开(公告)日：2023-11-09

申请号：US18245061

申请日：2021-09-07

Applicant: SHOWA DENKO K.K.

Inventor： Yu KAWAHARA ,  Takuya MINAMI ,  Yu OKANO ,  Hiroko TAKASHI ,  Yoshishige OKUNO

IPC: G06F16/332 ,  G06F16/338

CPC classification number: G06F16/332 ,  G06F16/338

Abstract: To improve accuracy in a document search for a document that includes a typographical error. A document retrieval device according to one embodiment of the present invention includes a misidentification table storing a correctly identified character string and a misidentified character string. The document retrieval device includes a document searcher. The document searcher obtains a search character string, and retrieves the search character string from both a document and a character string that is obtained by changing the misidentified character string included in the document to the correctly identified character string.