Hybrid models of fuzzy artmap and qlearning for pattern classification
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Date
2015-10-01
Authors
Farhad Pourpanah Navan
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Abstract
Pattern classification is one of the primary issues in various data mining
tasks. In this study, the main research focus is on the design and
development of hybrid models, combining the supervised Adaptive
Resonance Theory (ART) neural network and Reinforcement Learning (RL)
models for pattern classification. Specifically, the Fuzzy ARTMAP (FAM)
network and Q-learning are adopted as the backbone for designing and
developing the hybrid models. A new QFAM model is first introduced to
improve the classification performance of FAM network. A pruning strategy
is incorporated to reduce the complexity of QFAM. To overcome the
opaqueness issue, a Genetic Algorithm (GA) is used to extract fuzzy if-then
rules from QFAM. The resulting model, i.e. QFAM-GA, is able to provide
predictions with explanations using only a few antecedents. To further
improve the robustness of QFAM-based models, the notion of multi agent
systems is employed. As a result, an agent-based QFAM ensemble model
with a new trust measurement and negotiation method is proposed. A variety
of benchmark problems are used for evaluation of individual and ensemble
QFAM-based models. The results are analyzed and compared with those
from FAM as well as other models reported in the literature. In addition, two
real-world problems are used to demonstrate the practicality of the hybrid
models. The outcomes indicate the effectiveness of QFAM-based models in
tackling pattern classification tasks.