How rare is rare?
نویسندگان
چکیده
منابع مشابه
How Rare is Rare?
Large Deviations is a branch of probability theory that deals with rare events. It is a very active field with applications to several areas including statistics, communication networks, computing, statistical physics, and mathematical finance. (For an example of a rare event, consider the problem of species sampling: suppose that one wishes to determine the species of fish native to a body of ...
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We study the time until first occurrence, the first-passage time, of rare density fluctuations in diffusive systems. We approach the problem using a model consisting of many independent random walkers on a lattice. The existence of spatial correlations makes this problem analytically intractable. However, for a mean-field approximation in which the walkers can jump anywhere in the system, we ob...
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ژورنال
عنوان ژورنال: Nature
سال: 1992
ISSN: 0028-0836,1476-4687
DOI: 10.1038/358365f0