Method and system for automatically computing subject evolution trend in the internet

Abstract

The invention relates to a method and a system for automatically calculating the evolutional trend of a topic on the internet. The prior art only can simply analyze the topic (or event) from a document in a centralization way, and give out the document information contained by the topic. In fact, each topic changes with the variation of the time, and the topic evolutes constantly on the time dimension. On the basis of the prior topic detection system, the invention periodically calculates the relation between the topic in the current period and the topic in the last period and stores the relations. The system takes out the relations between the topic information which is corresponded to a plurality of periods and the topics, and can visually display the evolutional trend of the topic over time at a client in a graphic mode according to the time range input by the user. By adopting the method of the invention, a more three-dimensional topic analysis result can be provided for the user, and the understanding and the recognition of the user to the topic are deepened, thereby helping the user to make a decision. The method is widely applicable to the intelligent information processing.

Description

technical field [0001] The invention belongs to the technical field of intelligent information processing, and in particular relates to a method and system for automatically calculating the evolution trend of topics on the Internet. Background technique [0002] With the explosive growth of text information on the Internet, it is becoming more and more difficult for people to obtain interesting topic (event) information in time from massive text information. Topic Detection technology (Topic Detection, also known as topic detection technology, event detection technology) is committed to automatically detecting topics from massive texts in real time, providing topic information to users, and users can understand the importance of massive texts by browsing topics. content. [0003] According to the definition of the International Topic Detection and Tracking Group (see The 2002 topic detection and tracking (TDT2002) task definition and evaluation plan, version 1.1, prepared b...

AI Technical Summary

Problems solved by technology

[0008] In view of the defect that the existing topic detection system cannot analyze and calculate the topic evolution trend, the purpose of the present invention is to analyze the topic evolution trend over time by calculating the similarity relationship between topics in different time periods in real time, and draw the topic evolution Trend

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