Tactic-Based Learning for collective learning systems
by Armstrong, Alice, D.Sc., THE GEORGE WASHINGTON UNIVERSITY, 2008, 320 pages; 3304083

Abstract:

Tactic-Based Learning is a new selection policy for statistical learning systems that has been tested with a Collective Learning Automaton which solves a simple, but representative problem. Current selection policies respond to immature stimuli that do not yet have high-confidence responses associated with them by selecting responses randomly. Albeit unbiased, this policy ignores any confident information already acquired for other well-trained stimuli. To exploit this confident information, Tactic-Based Learning hypothesizes that in the absence of a sufficiently confident response to a given stimulus, selecting a confident response to a different, but nonetheless well-trained stimulus is a better strategy than selecting a random response. Tactic-Based Learning does not require any feature comparison in search of an appropriate response. Preliminary results show that Tactic-Based Learning significantly accelerates learning and reduces error, especially when several stimuli share the same response, i.e. , when broad domain generalization is possible. Tactic-Based Learning reduces the use of pseudo-random number generators in the response selection process. Additionally, Tactic-Based Learning assists the recovery of learning performance when the problem evolves over time.

 
AdviserPeter Bock
SchoolTHE GEORGE WASHINGTON UNIVERSITY
SourceDAI/B 69-03, p. , Jul 2008
Source TypeDissertation
SubjectsStatistics; Artificial intelligence
Publication Number3304083
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