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random stopping

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  • Stopping by Woods on a Snowy Evening — is a poem written in 1922 by Robert Frost, and published in 1923 in his New Hampshire volume. Imagery and personification are prominent in the work. Frost wrote this poem about winter in June, 1922 at his house in Shaftsbury, Vermont that is now… …   Wikipedia

  • Stopping time — Example of a stopping time: a hitting time of Brownian motion In probability theory, in particular in the study of stochastic processes, a stopping time (also Markov time) is a specific type of “random time”. The theory of stopping rules and… …   Wikipedia

  • Random checkpoint — Mexican troops operating in a random checkpoint A random checkpoint (also known as a flying checkpoint , mobile checkpoint or hasty checkpoint ) is a military and police tactic involving the set up of a hasty roadblock primarily by mobile truck… …   Wikipedia

  • Optimal stopping — In mathematics, the theory of optimal stopping is concerned with the problem of choosing a time to take a particular action, in order to maximise an expected reward or minimise an expected cost. Optimal stopping problems can be found in areas of… …   Wikipedia

  • Optional stopping theorem — In probability theory, the optional stopping theorem (or Doob s optional sampling theorem) says that, under certain conditions, the expected value of a martingale at a stopping time is equal to its initial value (and also expected value at any… …   Wikipedia

  • Loop-erased random walk — In mathematics, loop erased random walk is a model for a random simple path with important applications in combinatorics and, in physics, quantum field theory. It is intimately connected to the uniform spanning tree, a model for a random tree.… …   Wikipedia

  • Robbins' problem (of optimal stopping) — is a problem of optimal stopping, sometimes referred to as the fourth secretary problem or the problem of minimizing the expected rank with full information. Its statement is as follows. Let X 1, ... , X n be independent, identically distributed… …   Wikipedia

  • Stopped process — In mathematics, a stopped process is a stochastic process that is forced to assume the same value after a prescribed (possibly random) time.DefinitionLet * (Omega, mathcal{F}, mathbb{P}) be a probability space; * (mathbb{X}, mathcal{A}) be a… …   Wikipedia

  • Martingale (probability theory) — For the martingale betting strategy , see martingale (betting system). Stopped Brownian motion is an example of a martingale. It can be used to model an even coin toss betting game with the possibility of bankruptcy. In probability theory, a… …   Wikipedia

  • radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …   Universalium

  • Paul Bowles — Paul Frederic Bowles (December 30, 1910 – November 18, 1999) was an American expatriate composer, author, and translator.Following a cultured middle class upbringing in New York City, during which he displayed a talent for music and writing,… …   Wikipedia

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