相关实验视频

Updated: Jul 15, 2025

A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment

A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment

Published on: January 11, 2020

认知诊断计算机自适应测试的新项目选择策略:一个启发式搜索框架

Xi Cao¹, Ying Lin², Dong Liu^3,4

¹Department of Computer Science and Information Technology, La Trobe University, Melbourne, Australia.

Behavior research methods

|September 25, 2023

概括

这项研究引入了一种新的启发式搜索框架,用于计算机自适应诊断测试 (CD-CAT). 新方法提高了项目库的利用率,同时在个性化测量中保持高诊断准确度.

科学领域:

心理测量心理测量心理测量
教育测量教育的测量
计算机化的适应性测试

背景情况:

计算机自适应诊断测试 (CD-CAT) 通过根据个人的能力量身定制项目来提供个性化的测量.
有效的项目选择对于CD-CAT的准确性和效率至关重要.
现有的贪策略难以平衡诊断性能和项目银行利用率.

研究的目的:

开发一种新的CD-CAT项目选择框架,使用基于图形的启发式搜索方法.
解决贪的项目选择策略在平衡诊断准确性和项目银行利用方面的局限性.
提高认知诊断测试中个性化测量的效率和有效性.

主要方法:

将CD-CAT项目选择问题转换为图表上的路径搜索问题.
定义了一个启发式函数来评估项目选择路径的诊断潜力.
提出了两种搜索机制,使用不同的物品暴露控制来找到最佳路径.
从已识别的最佳服药路径中选择了第一个未使用的物品.

主要成果:

建议的启发式搜索框架表明,与传统策略相比,项目库的利用率有所提高.
诊断性能以较低的成本保持,这表明效率有所提高.
在各种条件下的模拟研究验证了框架的有效性.

结论:

基于启发式搜索的新CD-CAT项目选择框架在诊断性能和项目库利用之间提供了卓越的平衡.
这种方法代表了个性化测量和认知诊断测试的重大进步.
这些发现表明,改进了适应性测试项目选择的策略.

关键词:

认知诊断测试是一种认知诊断测试.计算机化的适应性测试启发式搜索启发式搜索启发式搜索

更多相关视频

Computerized Adaptive Testing System of Functional Assessment of Stroke

Computerized Adaptive Testing System of Functional Assessment of Stroke

Published on: January 7, 2019

Practical Methodology of Cognitive Tasks Within a Navigational Assessment

Practical Methodology of Cognitive Tasks Within a Navigational Assessment

Published on: June 1, 2015

相关概念视频

Heuristics

Heuristics

Heuristics are problem-solving strategies that use mental shortcuts to simplify decision-making. Unlike algorithms, which must be followed precisely to achieve a correct result, heuristics offer a general problem-solving framework. They save time and energy but can sometimes lead to less rational decisions.
People often rely on heuristics when faced with an overload of information, limited time, low importance of the decision, limited information, or when a heuristic readily comes to mind. For...

The Availability Heuristic

The Availability Heuristic

A heuristic is a general problem-solving framework (Tversky & Kahneman, 1974). You can think of these as mental shortcuts that are used to solve problems. Different types of heuristics are used in different types of situations, and the impulse to use a heuristic occurs when one of five conditions is met (Pratkanis, 1989):

Problem-Solving

Problem-Solving

Effective problem-solving consists of two steps: 1. identifying the problem and 2. selecting the appropriate problem-solving strategy (i.e., a plan of action used to find a solution). Humans use four problem-solving strategies:

The Anchoring-and-Adjustment Heuristic

The Anchoring-and-Adjustment Heuristic

In order to make good decisions, we use our knowledge and our reasoning. Often, this knowledge and reasoning is sound and solid. However, sometimes, we are swayed by biases or by others manipulating a situation. For example, let’s say you and three friends wanted to rent a house and had a combined target budget of $1,600. The realtor shows you only very run-down houses for $1,600 and then shows you a very nice house for $2,000. Might you ask each person to pay more in rent to get the...