Abstract
The context of teacher is indescribable without considering the multiple overlapping contextual situations. Teacher Context Ontology (TCO) presents a unified representation of data of these contexts. This ontology provides a relatively high number of features to consider for each context. These features result in a computational overhead during data processing in context-aware recommender systems. Therefore, the most relevant features must be favored over others without losing any potential ones using a feature selection approach. The existing approaches provide struggling results with high number of contextual features. In this paper, a new contextual ontology-based feature selection approach is introduced. This approach finds similar contexts for each insertion of new teacher using the ontology representation. Also, it selects relevant features from multiple contexts of a teacher according to their corresponding importance using a variance-based selection approach. This approach is novel in terms of representation, selection, and deriving implicit relationships for features in the multiple contexts of a teacher.
This work was funded by the French Research Agency (ANR) and by the company Vivocaz under the project France Relance - preservation of R &D employment (ANR-21-PRRD-0072-01) in collaboration with project Imhotep “Preventing teachers’ psychosocial risks through contextual support of educational resources”.
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Nashed, N.N., Lahoud, C., Abel, MH. (2023). Contextual Ontology-Based Feature Selection for Teachers. In: González-González, C.S., et al. Learning Technologies and Systems. ICWL SETE 2022 2022. Lecture Notes in Computer Science, vol 13869. Springer, Cham. https://doi.org/10.1007/978-3-031-33023-0_10
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