Automatic Organization and Generation of Presentation Slides for E-Learning

The effectiveness of an e-learning system for distance education to a large extent depends on the relevancy and presentation of learning content to the learner. The ability to gather documents on a particular topic from the web and adapt the contents of the document to suit the learner is an important task from the content creation perspective of e-learning. For the developer of e-learning material the provision to automatically extract, organize, and present content material would improve its effectiveness. This paper proposes to extract information from documents using language processing techniques and organizing the content into appropriate presentation slides for learning purposes using domain ontology and learning oriented pedagogy ontology. DOI: 10.4018/jdet.2012070103 36 International Journal of Distance Education Technologies, 10(3), 35-52, July-September 2012 Copyright © 2012, IGI Global. Copying or distributing in print or electronic forms without written permission of IGI Global is prohibited. approaches for content creation for distance education in e-learning. Ontology formally describes shared meaning of the used vocabulary. Ontology plays a very important role in text summarization and slide generation as it brings in a semantic flavor to document processing. A work on usage of three dimensional semantically structured spaces for describing e-learning materials using content, context and structure ontology was proposed by Stojanovic, Staab, and Studer (2001). In their work content or domain ontology is used in the process of defining the content of a learning material or in the process of searching a particular material. Context or pedagogy ontology describes domain independent components of learning such as example, introduction, figure, etc., that discriminate between the different parts of the learning material and help in context-relevant searching of learning materials. They have also described a structure ontology that is used to tailor the scattered chunks of e-learning contents to suit the learner needs. The proposed work in this paper uses domain ontology based on ACM classification (1998) to generate presentation slides restricted to computer science domain and pedagogical ontology having different pedagogical roles. This paper is organized as follows. The next section explains related work done for content generation and graph based approaches. Section 3 explores the essential Language processing techniques required for slide generation. Section 4 describes the domain and pedagogical ontology and Section 5 illustrates the graph technique used in the work. The procedure for bullet point’s identification for slide generation is described in Section 6, and Section 7 deals with the evaluation measures followed by results and discussion. Section 8 deals with conclusion and future direction of this work.