User-Oriented Objective Prioritization for Meta-Featured Multi-Objective Recommender Systems
| Autor: | Marcos André Gonçalves, Dayanne Gouveia Coelho, Carlos Bruckner, Reinaldo Silva Fortes, Anisio Lacerda, Alan R. R. de Freitas |
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| Rok vydání: | 2018 |
| Předmět: |
Prioritization
Point (typography) Computer science Process (engineering) business.industry media_common.quotation_subject Novelty 02 engineering and technology Recommender system Machine learning computer.software_genre Set (abstract data type) 020204 information systems 0202 electrical engineering electronic engineering information engineering 020201 artificial intelligence & image processing Quality (business) User oriented Artificial intelligence business computer media_common |
| Zdroj: | UMAP (Adjunct Publication) |
| DOI: | 10.1145/3213586.3225243 |
| Popis: | Multi-Objective Recommender Systems (MO-RS) consider several objectives to produce useful recommendations. Besides accuracy, other important quality metrics include novelty and diversity of recommended lists of items. Previous research up to this point focused on naive combinations of objectives. In this paper, we present a new and adaptable strategy for prioritizing objectives focused on users' preferences. Our proposed strategy is based on meta-features, i.e., characteristics of the input data that are influential in the final recommendation. We conducted a series of experiments on three real-world datasets, from which we show that: (i) the use of meta-features leads to the improvement of the Pareto solution set in the search process; (ii) the strategy is effective at making choices according to the specificities of the users' preferences; and (iii) our approach outperforms state-of-the-art methods in MO-RS. |
| Databáze: | OpenAIRE |
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