نتایج جستجو برای: conditional random variable

تعداد نتایج: 574799  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده ریاضی 1390

the main objective in sampling is to select a sample from a population in order to estimate some unknown population parameter, usually a total or a mean of some interesting variable. a simple way to take a sample of size n is to let all the possible samples have the same probability of being selected. this is called simple random sampling and then all units have the same probability of being ch...

Journal: :bulletin of the iranian mathematical society 2011
m. tavangar m. asadi

Journal: :J. Philosophical Logic 2003
Philip G. Calabrese

The sum. difference, product and quotient of two functions with different domains are usually defined only on their common domain. This paper extends these definitions so that the sum and other operations are essentially defined anywhere that at least one of the components is defined. This idea is applied to propositions and events, expressed as indicator functions, to define conditional propos...

پایان نامه :0 1392

nowadays in trade and economic issues, prediction is proposed as the most important branch of science. existence of effective variables, caused various sectors of the economic and business executives to prefer having mechanisms which can be used in their decisions. in recent years, several advances have led to various challenges in the science of forecasting. economical managers in various fi...

2013
Clive G. Bowsher Margaritis Voliotis Peter S. Swain

Conditional expectations are not commonly used outside of probability and statistics. We present here a short introduction and list of their properties. For a random variable Z and a random vector X, the conditional expectation E[Z|X] is itself a random variable because it is a function of the random variables in X. For continuous random variables, E[Z|X] is defined as E[Z|X = x] = ∫ dz z p(z|x...

2008
Yang Wang Getian Ye

This paper proposes a joint random field (JRF) model for moving vehicle detection in video sequences. The JRF model extends the conditional random field (CRF) by introducing auxiliary latent variables to characterize the structure and evolution of visual scene. Hence detection labels (e.g. vehicle/roadway) and hidden variables (e.g. pixel intensity under shadow) are jointly estimated to enhance...

Journal: :algebraic structures and their applications 2014
ramin kazemi

the notion of a $d$-poset was introduced in a connection withquantum mechanical models. in this paper, we introduce theconditional expectation of  random variables on thek^{o}pka's $d$-poset and prove the basic properties ofconditional expectation on this  structure.

Journal: :Journal of Machine Learning Research 2006
Nicolai Meinshausen

Abstract Random Forests were introduced as a Machine Learning tool in Breiman (2001) and have since proven to be very popular and powerful for high-dimensional regression and classification. For regression, Random Forests give an accurate approximation of the conditional mean of a response variable. It is shown here that Random Forests provide information about the full conditional distribution...

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