Un Modelo de Recomendación Híbrida para Repositorios de Objetos de Aprendizaje (A Hybrid Recommendation Model for Learning Object Repositories)

Aldo Gordillo (agordillo@dit.upm.es)1, Enrique Barra (ebarra@dit.upm.es)1, Juan Quemada (jquemada@dit.upm.es)1


1Universidad Politécnica de Madrid

This paper appears in: Revista IEEE América Latina

Publication Date: March 2017
Volume: 15,   Issue: 3 
ISSN: 1548-0992


Abstract:
Learning Objects (LOs) have emerged as a cornerstone approach for the development and distribution of educational content. These resources are distributed by Learning Object Repositories (LORs), which can make it easier for users to find suitable LOs by using Recommender Systems (Rss). This paper presents a hybrid recommendation model for LORs that combines content-based, demographic and context-aware techniques, along with the use of quality and popularity metrics. This article also describes how the model has been used to implement two RSs for two real LORs: ViSH and Europeana. Each of these RSs was evaluated in terms of accuracy, utility,usability and satisfaction perceived by end users. Besides, an A/B testing was performed in ViSH to compare the recommendations of the RS with random suggestions. The results showed that the RSs had a high user acceptance in terms of utility, usability and satisfaction, and that the RSs significantly exceeded the performance achieved by the random recommendations.

Index Terms:
Hybrid Recommender Systems, Recommender model, Learning Objects, Learning Object Repositories   


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