Patent comparative analysis method
A technology of comparative analysis and patents, which is applied in the field of comparative analysis of patents, can solve problems such as the increased workload of manual patent review and the inability of basic analysis to meet the needs of patent mining, and achieve the effect of comparative analysis of patents
Active Publication Date: 2019-06-18
NANJING UNIV OF POSTS & TELECOMM
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[0003] Nowadays, there are many patent retrieval and analysis systems, such as IncoPat, SooPat, Patsnap, etc., but these patent systems mainly provide patent retrieval and simple statistical analysis of patents, and these basic analyzes cannot meet the needs of in-depth patent mining; The number of patent applications in China is showing a rapid upward trend, and the workload of manual patent review is increasing. Therefore, it is of great significance to develop an automated patent comparative analysis system.
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[0038] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0039] see figure 1 and combine figure 2 Shown, the present invention discloses a kind of patent comparative analysis method, and it comprises the following steps:
[0040] S1. Establish a patent database based on the web crawler method;
[0041] S2. Extract the patent document set D of the target subject from the patent database, and establish a candidate phrase set P of the patent document set D, wherein the patent document set D includes at least one target patent d c and at least one comparative patent d′ c ;
[0042] S3. Based on the optimal selection model, extract the target patent d from the candidate phrase set P c and comparative patent d' c important phrase set S, and the important phrase set S includes the target patent importan...
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The invention provides a patent comparative analysis method. According to the patent comparative analysis method, a patent database is established by utilizing a network technology; a candidate phraseset of the patent document set is established based on a word segmentation technology; an important phrase set is extracted on the basis of an optimization method, similarity scores and difference scores of important phrases and target patents and comparison patents are calculated, a similar phrase set and a difference phrase set of the target patents and the comparison patents are extracted on the basis of the optimization method, and patent comparative analysis is rapidly and effectively achieved.
Description
technical field [0001] The invention relates to a patent comparative analysis method, which belongs to the field of natural language processing and patent analysis. Background technique [0002] Patent comparative analysis is a type of patent analysis. The similarities and differences between patent documents can be quickly identified through effective patent document comparative analysis methods. In a certain sense, the patent level of an enterprise represents the overall innovation level of the enterprise. The core personnel of the enterprise can identify the core technology of other enterprises through comparative analysis, so as to formulate an effective technology strategy. [0003] Nowadays, there are many patent retrieval and analysis systems, such as IncoPat, SooPat, Patsnap, etc., but these patent systems mainly provide patent retrieval and simple statistical analysis of patents, and these basic analyzes cannot meet the needs of in-depth patent mining; The number o...
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IPC IPC(8): G06Q50/18G06F16/953G06F16/33
Inventor 汪云霄覃婷婷刘峥
Owner NANJING UNIV OF POSTS & TELECOMM