Exponentiated Gradient Exploration for Active Learning

Active learning strategies respond to the costly labeling task in a supervised classification by selecting the most useful unlabeled examples in training a predictive model. Many conventional active learning algorithms focus on refining the decision boundary, rather than exploring new regions that c...

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Vydáno v:Computers (Basel) Ročník 5; číslo 1; s. 1
Hlavní autor: Bouneffouf, Djallel
Médium: Journal Article
Jazyk:angličtina
Vydáno: Basel MDPI AG 01.03.2016
Témata:
active learning
Algorithms
Boundaries
Exploration
exploration and exploitation
exponentiated gradient
Learning
Mathematical models
Optimization
Strategy
Tasks
ISSN:2073-431X, 2073-431X
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Shrnutí:Active learning strategies respond to the costly labeling task in a supervised classification by selecting the most useful unlabeled examples in training a predictive model. Many conventional active learning algorithms focus on refining the decision boundary, rather than exploring new regions that can be more informative. In this setting, we propose a sequential algorithm named exponentiated gradient (EG)-active that can improve any active learning algorithm by an optimal random exploration. Experimental results show a statistically-significant and appreciable improvement in the performance of our new approach over the existing active feedback methods.
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ISSN:2073-431X
2073-431X
DOI:10.3390/computers5010001