Literature Reviews

Reviewed research papers, articles, and publications relevant to digital accessibility.

• DOM block clustering for enhanced sampling and evaluation

  Simon Harper, Anwar Ahmad Moon, Markel Vigo, Giorgio Brajnik, Yeliz Yesilada (2015) — Proceedings of the 12th International Web for All Conference (W4A)

  This paper addresses a fundamental challenge in web accessibility evaluation: large websites with thousands or tens of thousands of pages are practically impossible to fully evaluate, yet current sampling methods (random, best-guess, or convenience s…

  • accessibility evaluation
  • automated testing
  • web crawling
  • sampling methodology
  • DOM analysis
  • website demographics
  • WCAG compliance
  • clustering

• Creating accessible PDFs for conference proceedings

  Erin Brady, Yu Zhong, Jeffrey P. Bigham (2015) — Proceedings of the 12th International Web for All Conference (W4A)

  This paper investigates the accessibility of PDF research papers published at major ACM conferences related to accessibility and human-computer interaction. The authors conducted a two-part analysis: first, an automated accessibility check of 1,811 p…

  • PDF accessibility
  • document accessibility
  • tagged PDF
  • PDF/UA
  • screen readers
  • alternative text
  • automated testing
  • conference proceedings

• Comparing Accessibility Evaluation Plug-ins

  Tânia Frazão, Carlos Duarte (2020) — Proceedings of the 17th International Web for All Conference (W4A)

  This paper from the University of Lisbon systematically compares eight free Chrome browser extensions for automated accessibility evaluation: Microsoft Accessibility Insights, ACCESS Assistant Community, ARC Toolkit, aXe Chrome Plugin, Lighthouse, Te…

  • automated testing
  • accessibility testing
  • WCAG
  • web accessibility
  • evaluation tools
  • browser extensions

• Development technologies impact in web accessibility

  Carlos Duarte, Inês Matos, João Vicente, Ana Salvado, Carlos M. Duarte, Luís Carriço (2016) — Proceedings of the 13th International Web for All Conference (W4A)

  This study investigates whether the choice of web development technologies—programming languages, web frameworks, JavaScript frameworks, and content management systems—has a measurable impact on the accessibility of resulting web pages. The researche…

  • web accessibility
  • automated testing
  • web development
  • content management systems
  • JavaScript frameworks
  • WCAG compliance
  • accessibility evaluation

• Measuring the Impact of Automated Evaluation Tools on Alternative Text Quality: A Web Translation Study

  Silvia Rodríguez Vázquez (2016) — Proceedings of the 13th International Web for All Conference (W4A)

  This paper presents the first empirical study on web accessibility conducted around a translation task, investigating how automated evaluation tools affect the quality of image text alternatives produced by web translators. Twenty-eight professional …

  • alternative text
  • image accessibility
  • web translation
  • localization
  • automated testing
  • controlled language
  • screen readers
  • multilingual accessibility

• A Task Assignment Strategy for Crowdsourcing-Based Web Accessibility Evaluation System

  Liangcheng Li, Can Wang, Shuyi Song, Zhi Yu, Fenqin Zhou, Jiajun Bu (2017) — Proceedings of the 14th International Web for All Conference (W4A)

  This paper addresses a practical challenge in scaling web accessibility evaluation: how to effectively assign manual evaluation tasks to volunteer crowdsource workers with varying levels of expertise. While automated tools can check many accessibilit…

  • web accessibility evaluation
  • crowdsourcing
  • machine learning
  • automated testing
  • conformance testing
  • task assignment

• Active Learning for Web Accessibility Evaluation

  Mengni Zhang, Can Wang, Zhi Yu, Chao Shen, Jiajun Bu (2017) — Proceedings of the 14th International Web for All Conference (W4A)

  This paper introduces "active-prediction," a semi-supervised machine learning method that addresses a fundamental bottleneck in web accessibility evaluation: the prohibitive cost of evaluating all pages in a large website. Current practice relies on …

  • accessibility evaluation
  • machine learning
  • active learning
  • web accessibility
  • automated testing
  • sampling methods
  • accessibility metrics
  • SVM
  • semi-supervised learning
  • WCAG compliance
  • China
  • large-scale evaluation

• Reliability Aware Web Accessibility Experience Metric

  Shuyi Song, Jiajun Bu, Chengchao Shen, Andreas Artmeier, Zhi Yu, Qin Zhou (2018) — Proceedings of the 15th International Web for All Conference (W4A)

  This paper introduces RA-WAEM (Reliability Aware Web Accessibility Experience Metric), a novel approach to measuring website accessibility that incorporates actual user experience from people with disabilities while accounting for the varying reliabi…

  • accessibility metrics
  • user experience
  • accessibility evaluation
  • machine learning
  • web accessibility
  • WCAG compliance
  • automated testing
  • crowdsourcing
  • reliability
  • optimization algorithm
  • China
  • disability inclusion
  • visual impairment
  • motor disability
  • hearing disability

• Semantic Content Analysis Supporting Web Accessibility Evaluation

  Carlos Duarte, Inês Matos, Luís Carriço (2018) — Proceedings of the 15th International Web for All Conference (W4A)

  This paper addresses a fundamental limitation of automated web accessibility evaluation tools: their inability to assess whether text alternatives actually describe the content they refer to. While tools can detect the presence of an alt attribute on…

  • automated testing
  • alternative text
  • semantic analysis
  • machine learning
  • image recognition
  • image description
  • algorithm
  • natural language processing
  • text alternatives
  • accessibility evaluation
  • WCAG compliance
  • web accessibility

• Using Ontologies as a Foundation for Web Accessibility Tools

  Jens Pelzetter (2018) — Proceedings of the 15th International Web for All Conference (W4A 2018)

  This extended abstract proposes using formal ontologies — machine-readable knowledge representations using languages like OWL (Web Ontology Language) — as the foundation for web accessibility tools, addressing two major problems: supporting developer…

  • web accessibility
  • ontologies
  • WCAG
  • knowledge representation
  • automated testing
  • semantic web
  • OWL
  • accessibility evaluation
  • developer tools