Invalidity Patent Search System of NTT DATA

Abstract

In this paper, we give an overview of our invalidity patent search system for NTCIR-4 PATENT. The system is based on the document retrieval technique and the new methods that are suitable for the invalidity search; the query term extraction based on characteristics of invention, the retrieval model using components of invention, the ranking using the term… (More)

2 Figures and Tables

Topics

  • Presentations referencing similar topics