News-oriented Chinese food safety news event information automatic extraction method

A food safety and event information technology, applied in special data processing applications, instruments, electronic digital data processing, etc., can solve the time-consuming and labor-intensive problems of manual extraction of food safety event information

Inactive Publication Date: 2018-11-20
CHINA AGRI UNIV
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a news-oriented automatic extraction method of Chinese food safety news event information, which can automat...

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  • News-oriented Chinese food safety news event information automatic extraction method
  • News-oriented Chinese food safety news event information automatic extraction method
  • News-oriented Chinese food safety news event information automatic extraction method

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Embodiment Construction

[0035] In order to make the content of the present invention clearer, the implementation manner of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] The invention provides a news-oriented automatic extraction method for Chinese food safety news event information, which can automatically extract food safety time-related information from network news, and visually display the obtained information. Its workflow is as follows figure 1 shown.

[0037] Step S1: Collect corpus and construct relevant knowledge base; the specific steps are:

[0038] Crawl data from the food partner network and preprocess the collected data, including:

[0039] Format the crawled news documents, extract the title, date, source, abstract, and text data, save them in the database in a unified format, and obtain food news related document corpus, a total of 170,053 documents;

[0040] Organize China's domestic geographic information knowledge b...

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Abstract

The invention relates to a news-oriented Chinese food safety news event information automatic extraction method comprising the following steps: S1, collecting network news to construct a food news corpus; arranging the domestic geographic information knowledge base and constructing the geographic information knowledge base; collecting the food category information from the network and constructingthe food category knowledge base; S2, performing text classifying of the news corpus of the food news corpus by using the text classification model so as to obtain the food safety news corpus; S3 firstly extracting the event occurrence time in the food safety news corpus; secondly, extracting the event occurrence place in the food safety news corpus by utilizing the geographic information knowledge base; finally, extracting the food name and the category information involved in the food safety news corpus by utilizing the food category knowledge base; S4, counting the extracted time, place and food information; and S5, displaying the time, place and food statistical information by using the visualization technology. The information of three dimensions of the time, the place and the food category of the food safety event can be accurately extracted from the network news, statistics on the information can be performed and finally the statistical result can be visually displayed.

Description

technical field [0001] The invention relates to the field of natural language processing, in particular to a news-oriented method for automatically extracting Chinese food safety news event information. Background technique [0002] With the explosive growth and dissemination of Internet information, human society has entered an era of extremely rich information. Because food safety is related to the health and life of the public, food safety incidents have become the focus of public attention in various network information. From the perspective of government supervision, once a negative incident involving food safety occurs, the government hopes to get the news at the first moment and reduce its negative impact in the shortest possible time. Therefore, how to automatically extract and analyze these food safety incidents from the network is a key issue in food safety supervision. [0003] Since information on the same topic is often published on different network platforms...

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Application Information

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IPC IPC(8): G06F17/30
Inventor 陈瑛程曦瑶侯文俊
Owner CHINA AGRI UNIV
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