Patent Retrieval Of Semantic Keyword For Product Innovative Design

In recent decades,innovational design is more and more important in the field of mechanical product design.One of the key problems of innovational design is how to get the needed information which meets the design requirements from massive information,that is, the problem of knowledge acquisition.For example,in the fuzzy front-end stage of the TRIZ innovative conceptual design,the obtainment of the principle solution and the domain solution requires a large number of relevant knowledge.At present,the knowledge is mainly acquired from the patents by keyword search.However,the field of search is limited due of the absence of semantic search.This paper focuses on the semantic-based keyword search in order to improve the quality and efficiency of retrieval,and has a certain theoretical significance and reference value of the application.This paper firstly researches the patent text information extraction method and builds a database,which is searched by semantic keywords,then researches the retrieval method based on semantic keywords,and gives the application examples on above-mentioned basis finally. There are several aspects of the work:(1) This paper proposes a patent(download from State Intellectual Property Office website) text preprocessing method,which performs the transformation of HTML documents by Jtidy method and transforms PDF documents by business software.Then,the data is stored in the database through the program,which can be searched by keywords or semantic keywords in the patent database and prepare for the further extension of the database using patents.(2) This paper presents a keyword retrieval method based on semantic,which can be used in two aspects as following:To deal with the problem that some patents have no keywords,the approach using semantic keywords extracts the keywords of the patent automatically according to the statistic on the basis of semantic understanding;To deal with the field limitation of retrieval on keywords,the semantic keywords is employed to extend the coverage of patent retrieval.(3) The patent search instance serving for innovative design of snow removal vehicles is used to illustrate the validation of the patent text information extraction method and semantic keyword retrieval method proposed in this paper.The above research benefits the patent retrieval of knowledge acquisition oriented to innovative design,which is used as a part of the "The patent retrieval system oriented to innovative design" developed by our research group.The approach employs semantic keywords to obtain the required knowledge by searching patent database,which can be used as the reference of scheme design in the innovative design for the designer.