Multi-label learning for dynamic model type recommendation

• URL: http://arxiv.org/abs/2004.00558v1
• Date: Wed, 1 Apr 2020 16:42:12 GMT
• Title: Multi-label learning for dynamic model type recommendation
• Authors: Mariana A. Souza, Robert Sabourin, George D. C. Cavalcanti and Rafael M. O. Cruz
• Abstract summary: We propose a problem-independent dynamic base-classifier model recommendation for the online local pool (OLP) technique. Our proposed framework builds a multi-label meta-classifier responsible for recommending a set of relevant model types. Experimental results show that different data distributions favored different model types on a local scope.
• Score: 13.304462985219237
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Dynamic selection techniques aim at selecting the local experts around each test sample in particular for performing its classification. While generating the classifier on a local scope may make it easier for singling out the locally competent ones, as in the online local pool (OLP) technique, using the same base-classifier model in uneven distributions may restrict the local level of competence, since each region may have a data distribution that favors one model over the others. Thus, we propose in this work a problem-independent dynamic base-classifier model recommendation for the OLP technique, which uses information regarding the behavior of a portfolio of models over the samples of different problems to recommend one (or several) of them on a per-instance manner. Our proposed framework builds a multi-label meta-classifier responsible for recommending a set of relevant model types based on the local data complexity of the region surrounding each test sample. The OLP technique then produces a local pool with the model that yields the highest probability score of the meta-classifier. Experimental results show that different data distributions favored different model types on a local scope. Moreover, based on the performance of an ideal model type selector, it was observed that there is a clear advantage in choosing a relevant model type for each test instance. Overall, the proposed model type recommender system yielded a statistically similar performance to the original OLP with fixed base-classifier model. Given the novelty of the approach and the gap in performance between the proposed framework and the ideal selector, we regard this as a promising research direction. Code available at github.com/marianaasouza/dynamic-model-recommender.

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