李莉莉



摘 要: 针对网络课程评价的复杂性,在建立网络课程评价指标体系的基础上,引入模糊层次分析法确定网络课程评价指标权重,并给出了具体步骤。该方法根据三角模糊数比较大小的原理,采用定性和定量评价相结合的方式确定网络课程评价指标权重,既克服了专家评判时人为影响大的因素,使结果更加客观、科学,又易于编程和实现,具有很强的可操作性。
关键词: 网络课程; 三角模糊数; 模糊层次分析法; 评价指标
中图分类号:G434 文献标志码:A 文章编号:1006-8228(2016)04-55-03
Determining the evaluation index weight of Web-based course with FAHP
Li Lili
(Fuxin Higher Vocational College, Fuxin, Liaoning 123000, China)
Abstract: Due to the complexity of Web-based course evaluation, on the basis of establishing evaluation index system of Web-based course, FAHP (Fuzzy Analytical Hierarchy Process) method is proposed to determine the weight of evaluation index, and the specific steps are given. According to triangular fuzzy numbers comparative theory, the qualitative and quantitative evaluation methods are combined to determine the evaluation index weight of Web-based course, the method not only overcomes the anthropogenic influence factors of expert judgment, so as to make the result more objective and scientific, but also is easy to program and realize, with strong operability.
Key words: Web-based course; triangular fuzzy number; fuzzy analytic hierarchy process (FAHP); evaluation index
0 引言
随着信息技术的不断发展,网络课程突破了传统教学方式,越来越显示出其优越性和快捷性。如今,各种网络课程的质量良莠不齐,如何科学地评价网络课程、更好的规范网络课程发展,科学、客观地确定网络课程评价指标体系成为重点。在传统的网络课程评价中,通常是由专家根据以往的经验给出主观性的判断,其具有一定的模糊性。为了克服传统评价的缺陷,本文根据中国教育信息化技术标准CELTS-22《网络课程评价规范》确定的指标体系[1],在网络课程评价中引入模糊层次分析法(Fuzzy AHP,简称FAHP),并利用三角模糊数比较大小求出元素排序的方法,来确定网络课程评价指标权重,使评价结果更加客观、科学。
1 三角模糊数原理
定义1 三角模糊数可以通过其隶属度函数定义如下[2]:
⑴
式中,l≤m≤u,l和u分别代表判断的模糊程度。
设三角模糊数分别为,,,则其计算法则为[3]:
⑵
⑶
⑷
⑸
三角模糊数M1≥M2的可能性程度为:……p>