Topic Segmentation and Evaluation Measures for Elearning based on Domain and Pedagogical Ontology

Abstract

Block level segments obtained from e-learning material should form cohesive blocks of e-learning content not only from continuity perspective but also from concept coverage perspective. Therefore in this work two new evaluation measures specificity and proximity have been proposed to evaluate the segments from this concept coverage perspective. These two methods of segmentation have been compared using the standard evaluation measure pk and the two new proposed evaluation measures. Block level text segmentation for e- learning material has been implemented using texttiling method based on domain and pedagogical ontology and this has been compared with hierarchical Latent Dirichlet Allocation based on domain and pedagogical ontology. General