Reliability Aware Web Accessibility Experience Metric

被引：8

作者：

Song, Shuyi ^{[1
,2
]}

Bu, Jiajun ^{[1
,2
]}

Shen, Chengchao ^{[1
]}

Artmeier, Andreas ^{[1
]}

Yu, Zhi ^{[1
,2
]}

Zhou, Qin ^{[3
]}

机构：

[1] Zhejiang Univ, Coll Comp Sci, Zhejiang Prov Key Lab Serv Robot, Hangzhou 310027, Peoples R China

[2] Alibaba Zhejiang Univ, Joint Inst Frontier Technol, Hangzhou 310027, Peoples R China

[3] China Disabled Persons Federat Informat Ctr, Beijing 100034, Peoples R China

来源：

15TH INTERNATIONAL WEB FOR ALL CONFERENCE (W4A) 2018 | 2018年

基金：

中国国家自然科学基金;

关键词：

User Experience; Accessibility Metrics; Evaluation Methods; Web Accessibility; Accessibility Evaluation; Accessibility Standards;

D O I：

10.1145/3192714.3192836

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Web accessibility metrics can measure the accessibility levels of websites. Although many metrics with different motivations have been proposed, current metrics are limited in their applicability when considering user experience. This study proposes Reliability Aware Web Accessibility Experience Metric (RA-WAEM), a novel Web accessibility metric which considers the user experience of people with disabilities and their reliability in objectively assessing the severity of accessibility barriers. We present an optimization algorithm based on Expectation Maximization to derive the parameters of RA-WAEM efficiently. Moreover, we conduct an extensive accessibility study on 46 websites with 323,098 Web pages and collect the user experience of 122 people. An evaluation on this dataset shows that RA-WAEM outperforms state of the art accessibility metrics in reflecting the user experience.

引用

页数：4

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