Single Agent Learning Algorithms for Decision making in Diagnostic Applications
|International Journal of Computer Science and Engineering|
|© 2016 by SSRG - IJCSE Journal|
|Volume 3 Issue 5|
|Year of Publication : 2016|
|Authors : Deepak A. Vidhate, Dr. Parag Kulkarni|
Deepak A. Vidhate, Dr. Parag Kulkarni, "Single Agent Learning Algorithms for Decision making in Diagnostic Applications" SSRG International Journal of Computer Science and Engineering 3.5 (2016): 46-52 .
Deepak A. Vidhate, Dr. Parag Kulkarni,(2016). Single Agent Learning Algorithms for Decision making in Diagnostic Applications. SSRG International Journal of Computer Science and Engineering 3.5, 46-52 .
The output of the system is a sequence of actions in some applications. There is no such measure as the best action in any in-between state; an action is excellent if it is part of a good policy. A single action is not important; the policy is important that is the sequence of correct actions to reach the goal. To be able to generate a policy the machine learning programs should able to assess the quality of policies and learn from past good action sequences. Learning is the basic capacity of intelligent agents. An agent changes its behaviour based on its previous experiences through learning. An intelligent agent must be formalized by knowledge and be able to act on this knowledge. In many single-agent systems for learning the policy of an agent in uncertain environments, the reinforcement learning techniques have been applied successfully. Many existing singleagent models for sequential decision making are derived from a general model and are distinguished by assumptions. Q-learning algorithms are used for this purpose. Single agent learning model is given in this paper. Four single agent reinforcement learning algorithms are implemented and results are compared. Single agent Q-learning Algorithm and Sarsa Learning Algorithm gives some results for the problem. However adding eligibility traces in single agent learning algorithms i.e. Q(λ) learning and Sarsa(λ) learning gives performs better than the previous algorithms. The paper shows the results of all four algorithms and performance comparisons among them.
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Q-learning, Reinforcement learning, Sarsa Learning, Single Agent.