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Hierarchical cognitive diagnosis method, device and equipment

A diagnostic method and target attribute technology, applied in the field of cognitive diagnosis, can solve problems that have not yet been proposed, and achieve the effect of improving practice

Inactive Publication Date: 2018-10-16
HUAZHONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disassemble the test questions step by step, provide enlightening information to the subjects, diagnose the obstacles of the subjects answering the wrong questions step by step, and then construct the knowledge status of the subjects, and have not yet proposed a better solution

Method used

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  • Hierarchical cognitive diagnosis method, device and equipment

Examples

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Embodiment 1

[0032] Embodiment 1 of the present invention provides a hierarchical cognitive diagnosis method, see figure 1 Shown is a flowchart of a hierarchical cognitive diagnostic approach that includes:

[0033] Step S102, obtaining a correlation matrix between test items and target attributes in the test paper.

[0034] A test paper consists of one or more test questions. Attributes refer to the knowledge, skills, strategies, etc. that the subject needs to answer the test questions correctly, and it is a description of the internal processing process of the subject's problem-solving psychology. The target attribute is the attribute to be investigated in the test paper.

[0035]Step S104, collect the step-by-step information of the test questions of the testees, and combine the correlation matrix to generate a hierarchical matrix.

[0036] Subject i freely chooses the number of decomposition steps for each test question according to the difficulty of the test questions and self-awar...

Embodiment 2

[0126] Embodiment 2 of the present invention provides a hierarchical cognitive diagnosis system, see Figure 4 The structure diagram of the hierarchical cognitive diagnosis system shown, the system includes:

[0127] Domain knowledge module, including knowledge system library unit, test question library unit and test paper generation unit, used to generate test papers; heuristic hierarchical diagnostic test module, including diagnostic test interface, test question step selection unit, hierarchical diagnostic algorithm unit and positioning confusion The knowledge unit is used to locate the confusing knowledge of students; the user portrait module includes the student personal information unit, the learning history unit and the knowledge structure unit, which is used to store and update the student's information; the personalized remedial module includes remedial suggestions and route units, It is used for teachers to put forward remedial suggestions and routes for correspondin...

Embodiment 3

[0130] Embodiment 3 of the present invention provides a heuristic hierarchical diagnosis algorithm, see Figure 5 As shown in the flow chart of the hierarchical cognitive diagnosis algorithm, the method includes the following steps:

[0131] (1) Knowledge system construction.

[0132] The construction of the knowledge system includes three steps: the determination of target attributes, the determination of cognitive attributes and hierarchical relationships, and the determination of ideal mastery models.

[0133] (2) Preparation of test papers.

[0134] Experts compile the test papers, determine the test attributes of the test questions, and generate the above-mentioned Q matrix.

[0135] (3) Tested by the subjects.

[0136] The subjects choose the test items step by step, get the hierarchical Q matrix, and record the subjects' response matrix.

[0137] (4) Diagnosis of the knowledge status of the subjects.

[0138] The ability vectors of the subjects are generated throug...

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Abstract

The invention provides a hierarchical cognitive diagnosis method, a device and system, and relates to the technical field of cognitive diagnosis. The method comprises the following steps of: acquiringa correlation matrix of the test questions of a test paper and a target attribute; acquiring the step information of the test questions to be tested, and generating a hierarchical matrix by combiningthe correlation matrix; determining an ideal master mode of the target attribute and determining the capability vector of each ideal master mode; acquiring the tested answer information, and determining the tested capability vector according to the answer information; carrying out classification on the tested capability vector and the capability vector of each ideal master mode to determine a matched ideal master mode. According to the invention, heuristic information is provided to a testee through the mode of building a hand-and-foot rack, the testee is subjected to layered diagnosis, the knowledge state of the testee is diagnosed, the attribute which is not mastered by the testee is positioned, thereby providing a guide direction for the teacher based on the testee, a personalized remedy promotion exercise is provided to the testee.

Description

technical field [0001] The present invention relates to the technical field of cognitive diagnosis, in particular to a hierarchical cognitive diagnosis method, device and equipment. Background technique [0002] The traditional test / examination only uses the total score of the test as the evaluation index, which seems too general and general. Now people not only require the test to be evaluated at the level of the total score, but also hope to go deep into the level of cognitive processing inside the testee. For comprehensive test questions that investigate multiple attributes, the reason for the respondent's wrong answer may be that one of the attributes has not been mastered, not all the attributes investigated by the test question have not been mastered. Dismantling the test questions step by step, providing enlightening information to the subjects, diagnosing the obstacles of the subjects answering the wrong questions layer by layer, and then constructing the knowledge s...

Claims

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Application Information

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IPC IPC(8): G06K9/62G06Q50/20G06F17/16
CPCG06F17/16G06Q50/20G06F18/23213
Inventor 黄涛刘三女牙杨华利耿晶胡小芳张浩
Owner HUAZHONG NORMAL UNIV
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