Video Transcript Indexing and Retrieval Procedure

Finding appropriate e-Learning resources within a repository of videos represents a critical aspect for students. Given that transcripts are available for the entire set of videos, the problem reduces to obtaining a ranked list of video transcripts for a particular query. The paper presents a custom approach for searching the 16.012 available video transcripts from Media Website at Universitat Politecnica de Valencia. The proposed solution builds a bag-of-words, computes TF-IDF scores, clusters the transcripts and builds a Latent Dirichlet Allocation (LDA) model for each cluster. An inherent difficulty of the problem comes from the fact that transcripts are in the Spanish language. The experimental results are satisfactory, especially in terms of comparing with currently existing search mechanism.