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A filling method and technology for missing items, which are applied in the field of filling missing items in psychological assessment scales, which can solve problems such as inability to evaluate, inaccurate evaluation results, and missing partial values in evaluation scales.
Pending Publication Date: 2020-10-27
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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[0003] In the actual psychological evaluation process, due to some objective reasons (such as missing information) or the lack of cooperation of the evaluation object, some values in the evaluation scale may be missing or invalid, resulting in inaccurate or impossible evaluation results.
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Embodiment 1
[0052] Such as figure 1 As shown, a method for filling the missing items of the psychological evaluation scale includes the following steps:
[0053] S1. Establish a two-dimensional matrix R according to the existing psychological evaluation scales of several similar evaluation objects. The two-dimensional matrix R includes evaluation objects and evaluation items, as shown in Table 1:
[0054] Table 1
[0055]
[0056]In Table 1, the symbol "×" indicates the missing item in the evaluation object. Considering that in the actual evaluation process, an evaluation object in a group of evaluation objects often has several evaluation objects similar to his mental state, and these persons with similar mental states may give very similar choices to the same evaluation item, that is, These test subjects scored similarly on the same test items. Based on this principle, the unknown score r of the jth item filling the evaluation object u uj When , you can use the scores of other ev...
Embodiment 2
[0086] This embodiment is based on embodiment 1, and the difference from the embodiment is that when the data in the two-dimensional matrix R is a sparse scene, use matrix sum To approximate the A matrix and b vector respectively, matrix sum A vector is defined as follows:
[0087]
[0088] In the formula, v, m∈N(u);
[0089]
[0090] In the formula, v∈N(u);
[0091] For each pair of evaluation objects (v∈N(u), m∈N(u), use formula (7) to calculate straight, then according to The value calculates avg as shown in the following formula:
[0092]
[0093] Approximate the A matrix and b vector as matrix sum vector, then there are:
[0094]
[0095] In the formula, v, m∈N(u), avg is all The average value of , β is a constant that controls scaling;
[0096]
[0097] In the formula, v,m∈N(u); avg is all The average value of , β is a constant that controls scaling;
[0098] matrix sum The vectors are the approximation of the A matrix and the b ...
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Abstract
The invention discloses a psychological assessment scale missing item filling method. The method comprises the following steps: establishing a two-dimensional matrix R according to existing psychological evaluation scales of a plurality of similar evaluation objects, wherein the two-dimensional matrix R comprises the evaluation objects and evaluation items; calculating the similarity Suv between the evaluation object u and other evaluation objects v according to the existing data of the two-dimensional matrix R, and classifying the evaluation objects with similar similarities into the same group of evaluation objects; and calculating the score of the missing item j of the evaluation object u in the same group of evaluation objects according to an interpolation method. According to the method, missing items are filled by utilizing the similarity between the similar evaluation objects according to the existing evaluation scale with missing data, so that the data is completely filled.
Description
technical field [0001] The invention relates to the technical field of psychological evaluation, in particular to a method for filling missing items in a psychological evaluation scale. Background technique [0002] The psychological evaluation scale is also called psychological measurement, which refers to determining a quantitative value based on certain psychological theories and using certain operating procedures to determine a person's psychological characteristics and behaviors such as ability, personality, and mental health. According to the quantitative value evaluated by the scale, the psychological state of the person can be evaluated. A complete psychological evaluation scale is often composed of several evaluation dimensions, each evaluation dimension is aimed at evaluating one dimension of psychology, and the evaluation of each dimension also includes several items. For example, in order to evaluate the problem of recidivism of released prisoners, most prisons ...
Claims
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