AnnotatEd: A social navigation and annotation service for web-based educational resources
The New Review of Hypermedia and Multimedia
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Most of the web interfaces are primarily designed for people with sight, with visually rich features that makes effective use of the tools to enhance visual usability but in process making it impossible for users who are blind or visually impaired to use them. In this work, our goal is to improve participation to NSF's National Science Digital Library1 (NSDL) by teachers, librarians, and learners who are blind. The middleware for accessible information spaces on NSDL (MAISON) is enhancing the accessibility of NSDL, its internal and external resources and existing services (such as strand maps of educational benchmarks). Relying on cutting-edge, context-aware graph segmentation, filtering and summarization, and concept propagation techniques, the middleware provides information space adaptation, reduction, and preview services through open web-based service APIs to enable implementation of informative navigation interfaces that are able to reduce the complexity of the information space and provide previews to prevent user disorientation.