Similarity detection method and system based on power information system code file

Abstract

The invention discloses a similarity detection method and system based on a power information system code file, and the method comprises the steps: obtaining a first code file and a second code file which need to judge the similarity, and respectively obtaining a first text and a second text after preprocessing; obtaining the text semantic word vector according to the TF-IDF value of the word, respectively searching function call tree structures of the first text and the second text from the function call entrances of the first text and the second text, and calculating to obtain a first text structure vector and a second text structure vector; calculating an intermediate semantic word vector through a text semantic word vector, taking a union set of the first text structure vector and thesecond text structure vector, and calculating a first intermediate structure vector and a second intermediate structure vector; and obtaining the similarity between the first text and the second text.Firstly, a preprocessing function is adopted to perform code simplification on a code file, the detection efficiency is improved, and the detection error rate is reduced.

Description

technical field [0001] The invention relates to the technical field of code similarity detection, in particular to a similarity detection method and system based on code files of an electric power information system. Background technique [0002] Code similarity detection technology is currently mainly used in code plagiarism detection, which is an important task in computer software development and maintenance activities, in many fields such as source code plagiarism detection, software component library query, software defect detection, program understanding, etc. has wide application. It can not only help teachers to detect plagiarism of students' program assignments, but also has good practical significance for the identification of software copyright. [0003] In the paper published at the 6th Annual CCSCN Northeastern Conference, Middlebury VT.2001, "Metrics-based plagiarism monitoring. A means of plagiarism. Respectively (1) copy verbatim (2) change the comment sta...

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Problems solved by technology

[0008] Purpose of the invention: In order to overcome the deficiencies of the prior art, the present invention provides a similarity detection method and system based on the code file of the electric power information system, which can solve the problem of low detection effect and complex execution of some methods encountered in the process of detecting code similarity The problem of long time and high error rate in some cases

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