Title :
Speeding up top-down attention control learning by using full observation knowledge
Author :
Noori, N. ; Ahmadabadi, M. Nili ; Mirian, M.S. ; Araabi, B.N.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Tehran. Tehran, Tehran, Iran
Abstract :
We present a general mathematical description of the top-down attention control problem. Three important components are identified in the model: context extraction, attention focus and decision making. The context gives a coarse blurry representation of the whole input; the attention module models the focus of attention on a limited part of input, and the decision making component accounts the final decision of the agent for its motory actions. In order to achieve a faster convergence of attention learning in the online phase, an offline optimization step is performed in advance. To do so, we incorporate the knowledge of a full observer agent that has approximately learned the optimal decision making of the task. The simulation results show that by employing our algorithm, the learning speed is improved.
Keywords :
decision making; image processing; optimisation; Bayesian networks; attention focus; coarse blurry representation; context extraction; decision making; full observation knowledge; mathematical description; motory actions; offline optimization step; speeding up topdown attention control; visual information; Bayesian methods; Context modeling; Convergence; Decision making; Focusing; Humans; Information filtering; Information filters; Layout; Robot sensing systems;
Conference_Titel :
Computational Intelligence in Robotics and Automation (CIRA), 2009 IEEE International Symposium on
Conference_Location :
Daejeon
Print_ISBN :
978-1-4244-4808-1
Electronic_ISBN :
978-1-4244-4809-8
DOI :
10.1109/CIRA.2009.5423179