Similar test question identification method based on knowledge structure

A technology of knowledge structure and recognition method, which is applied in the field of machine learning and educational data mining, can solve the problems of similar test questions recognition needs to be improved, ignore the structural information of knowledge points, etc., and achieve the effect of improving model effect, enhancing effect, and high interpretability

Pending Publication Date: 2021-01-15
UNIV OF SCI & TECH OF CHINA
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  • Abstract
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Problems solved by technology

[0004] At present, most of the work related to the identification of similar test questions uses the similar text, pictures or knowledge point label features of t

Method used

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  • Similar test question identification method based on knowledge structure
  • Similar test question identification method based on knowledge structure
  • Similar test question identification method based on knowledge structure

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Embodiment Construction

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0016] Embodiments of the present invention provide a method for identifying similar test questions based on knowledge structure, including:

[0017] Obtain the test question set and the test questions to be identified. Each test question and the test questions to be identified in the test question set include relevant content information, knowledge points and knowledge structures formed by the relationship between knowledge points;

[0018] Construct a multi-mo...

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Abstract

The invention discloses a similar test question identification method based on a knowledge structure, which integrates multidirectional factors of texts, images, knowledge points and knowledge point structures to calculate the similarity of test question pairs, and can improve the effect of similar test question identification. Besides, in the modeling process, semantic representation is obtainedby comprehensively considering text and picture features, then semantic representation based on a knowledge structure is obtained by utilizing the knowledge structure, and high interpretability is achieved while the model effect is improved.

Description

technical field [0001] The invention relates to the technical field of machine learning and educational data mining, in particular to a method for identifying similar test questions based on knowledge structure. Background technique [0002] Identifying similar test items (FSE) is a fundamental and challenging task for online education systems, which can be used in online education systems such as test item retrieval and student ability modeling. In recent years, the research and application of online education systems have been booming. These systems can not only help teachers assign test questions to students in a targeted manner, but also help students consolidate the knowledge points they have learned; the task of identifying similar test questions plays a role in this. vital role. [0003] The structural information of knowledge points is stored in the knowledge structure. The knowledge structure explains how the knowledge concepts in a domain are related to each other...

Claims

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Application Information

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IPC IPC(8): G06F16/36G06F40/30G06K9/62G06N3/04G06N3/08
CPCG06F16/367G06F40/30G06N3/08G06N3/044G06N3/045G06F18/22
Inventor 佟威刘淇陈恩红童世炜何理扬黄威
Owner UNIV OF SCI & TECH OF CHINA
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