منابع مشابه
Optimal Supernova Search Strategies
Recent use of Type Ia supernovae to measure acceleration of the universe has motivated questions regarding their optimal use to constrain cosmological parameters ΩM , ΩΛ and wQ. In this work we address the question: what is the optimal distribution of supernovae in redshift in order to best constrain the cosmological parameters? The solution to this problem is not only of theoretical interest, ...
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Web search engines respond to a query by returning more results than can be reasonably reviewed. These results typically include the title, link, and snippet of content from the target link. Each result has the potential to be useful or useless and thus reviewing it has a cost and potential benefit. This paper studies the behavior of a rational agent in this setting, whose objective is to maxim...
متن کاملOptimal search strategies for hidden targets.
What is the fastest way of finding a randomly hidden target? Experimental observations reveal that the search behavior of foraging animals is generally intermittent: active search phases randomly alternate with phases of fast ballistic motion. Here, we study the efficiency of this two state search strategy by calculating analytically the mean first passage time at the target. We model the perce...
متن کاملOptimal strategies for weighted ray search
Searching for a hidden target is an important algorithmic paradigm with numerous applications. We introduce and study the general setting in which a number of targets, each with a certain weight, are hidden in a star-like environment that consists of m infinite, concurrent rays, with a common origin. A mobile searcher, initially located at the origin, explores this environment in order to locat...
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In this study, we have investigated which strategies were optimal in different haptic search tasks, where items were held in the hand. Blindfolded participants had to detect the presence of a target among distractors while using predetermined strategies. The optimal strategy was determined by considering reaction time and error data. In the search for salient targets, a rough sphere among smoot...
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ژورنال
عنوان ژورنال: Indian Journal of Urology
سال: 2009
ISSN: 0970-1591
DOI: 10.4103/0970-1591.52936