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Artificial Intelligence and Soft Computing: Behavioral ... - Arteimi.info

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simplest form of re<strong>info</strong>rcement learning is adopted in learning automata.<br />

Currently Q-learning <strong>and</strong> temporal difference learning have been devised<br />

based on the reward/ punishment status of the feedback signal.<br />

Fig.13.9: A classification scheme is made by constructing a two<br />

dimensional feature space by fractal dimension <strong>and</strong> porosity to<br />

classify the phospholipid vesicles from the images of their<br />

aggregates.<br />

13.4.1 Learning Automata<br />

Among the well-known re<strong>info</strong>rcement learning schemes, the most common is<br />

the learning automata. The learning mechanism of such a system includes<br />

two modules: the learning automation <strong>and</strong> the environment. The learning<br />

cycle starts with the generation of a stimulus from the environment. The<br />

automation on receiving a stimulus generates a response to the environment.<br />

The environment receives <strong>and</strong> evaluates the response <strong>and</strong> offers a new<br />

stimulus to the automation. The learner then automatically adjusts its<br />

parameters based on the last response <strong>and</strong> the current input (stimulus) of the<br />

automation. A scheme for learning automation is presented in fig. 13.10.

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