Similarity matching method and device for work tickets

A technology of similarity matching and work tickets, applied in text database query, unstructured text data retrieval, instruments, etc., can solve the problems of low automation level, heavy workload, and low efficiency

Pending Publication Date: 2019-11-01
STATE GRID HEBEI ELECTRIC POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, work tickets are mainly formulated based on the experience of the operators themselves. This method has disadvantages such as heavy workload, low level of automation, and low reliability.
In addition, it is also possible to search the content related to the equipment to be repaired from the knowledge base according to the preset search rules to fill in the work ticket, but when there are many search rules, this method has the disadvantages of slow search speed and low efficiency

Method used

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  • Similarity matching method and device for work tickets
  • Similarity matching method and device for work tickets
  • Similarity matching method and device for work tickets

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0095] Example 1: Taking Changlu station maintenance as an example, select the key information of the equipment to be repaired as the text content of the work ticket to be issued, including Changlu station, 220kV, #1B bus, #2 bus, interlocking and other key information, and all Word segmentation processing and stop word removal processing are performed on the text content of the work ticket to be opened to obtain effective phrases, and the weight value of each effective phrase is calculated.

[0096] A large number of historical work tickets and corresponding phrase vectors have been pre-stored in the computer device 100, and the similarity of each historical work ticket in the text content of the work ticket to be issued can be calculated through the cosine function. The computer device 100 lists the top 20 historical work tickets in the order of similarity, such as Figure 7 shown by Figure 7 It can be seen that the historical work ticket with serial number 23 has the high...

example 2

[0097] Example 2: Assuming that there is a close electrical connection between Changlu Station and Dafu Line, the staff want to understand the historical maintenance situation of Dafu Line while overhauling Changlu Station, so the key information related to Changlu Station in Example 1 On the basis of adding the keyword "Dafu Line" at the same time, the historical work tickets related to Changlu Station and Dafu Line can be matched, and the computer device 100 displays it according to the matching result.

[0098] Please refer to Figure 8 , Figure 8 The functional block diagram of the work ticket similarity matching device provided by the embodiment of this application. The similarity matching device 110 of the work ticket is applied to the computer equipment 100, and the phrase vectors of a plurality of historical work tickets are stored in the computer equipment 100, and the device includes:

[0099] The word segmentation module 1103 is configured to perform word segment...

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Abstract

The invention provides a similarity matching method and device for work tickets. The similarity matching method comprises the steps: receiving the text content of a to-be-issued work ticket, carryingout the word segmentation, and obtaining a plurality of word groups; removing stop phrases in the plurality of phrases to obtain effective phrases; calculating a weight value of each effective phrase,and obtaining a phrase vector of the work ticket to be issued according to the weight value of each effective phrase; and according to the phrase vector of the work ticket to be issued and the phrasevectors of the plurality of historical work tickets, calculating the similarity between the work ticket to be issued and the plurality of historical work tickets, and displaying the historical work tickets of which the similarity meets a preset condition to serve as a reference of the work ticket to be issued. Through the similarity matching method, historical work tickets similar to the to-be-issued work tickets are quickly matched and extracted from a large number of historical work tickets pre-stored in a database to serve as a reference for formulating the to-be-issued work tickets, so that new work tickets are quickly issued.

Description

technical field [0001] The invention relates to the field of power grid maintenance, in particular to a similarity matching method and device for work tickets. Background technique [0002] In recent years, due to the increasing number of new entities connected to the power grid, the uncertainty and complexity of the power grid operating environment have increased significantly. In order to ensure the safe operation of the power grid, it is necessary to carry out planned maintenance on the key equipment in the power grid system. The work ticket system is an important and reliable guarantee for the formulation and implementation of the maintenance plan. [0003] At present, work tickets are mainly formulated based on the experience of operators themselves. This method has disadvantages such as heavy workload, low level of automation, and low reliability. In addition, it is also possible to search the content related to the equipment to be overhauled from the knowledge base a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/33G06F17/27G06K9/62
CPCG06F16/3347G06F18/22
Inventor 王铁强鲁鹏曹欣杨晓东王维吕昊冯春贤刘彤李少岩顾雪平
Owner STATE GRID HEBEI ELECTRIC POWER CO LTD
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