نتایج جستجو برای: markov chain algorithm

تعداد نتایج: 1061872  

2002
EMMA HUNT Emma Hunt

An efficient probabilistic algorithm is presented for the determination of the rate matrix of a block-G I=M=1 Markov chain. Recurrence of the chain is not assumed.

Journal: :Journal of computational biology : a journal of computational molecular cell biology 1999
Gary A. Churchill B. Lazareva

Hidden Markov models (HMMs) are a class of stochastic models that have proven to be powerful tools for the analysis of molecular sequence data. A hidden Markov model can be viewed as a black box that generates sequences of observations. The unobservable internal state of the box is stochastic and is determined by a finite state Markov chain. The observable output is stochastic with distribution...

In this paper, we obtain the Rényi entropy rate for irreducible-aperiodic Markov chains with countable state space, using the theory of countable nonnegative matrices. We also obtain the bound for the rate of Rényi entropy of an irreducible Markov chain. Finally, we show that the bound for the Rényi entropy rate is the Shannon entropy rate.

1998
Pär Johannesson

The concept of rainnow cycles is often used in fatigue of materials for analysing load processes, which in most realistic cases should be modelled stochastically. Methods are developed for computation of the rainnow matrix for random loads that are changing properties over time due to changes of the system dynamics. For a random vehicle load the change of properties could reeect diierent drivin...

2011
M. THIYAGARAJAN R. MANIKANDAN

VLSI Cell partitioning is considered as Hypergraph model, which can be a treated a randomized algorithm through the markov chain. This approach helps to give a probabilistic algorithm through transition probability matrices of a markov chain for VLSI partitioning. In the second model SAT problem situation is used to model FPGA Layout. As almost all problems posed in VLSI design and analysis are...

Journal: :CoRR 2010
Greg Kochanski Burtn S. Rosner

A novel procedure is described for accelerating the convergence of Markov chain Monte Carlo computations. The algorithm uses an adaptive bootstrap technique to generate candidate steps in the Markov Chain. It is efficient for symmetric, convex probability distributions, similar to multivariate Gaussians, and it can be used for Bayesian estimation or for obtaining maximum likelihood solutions wi...

2005
Charles J. Geyer

1.1 Dimension Changing The Metropolis-Hastings-Green algorithm (as opposed to just MetropolisHastings with no Green) is useful for simulating probability distributions that are a mixture of distributions having supports of different dimension. An early example (predating Green’s general formulation) was an MCMC algorithm for simulating spatial point processes (Geyer and Møller, 1994). More wide...

Changiz Eslahchi Hamid Pezeshk, Mehdi Sadeghi Sima Naghizadeh Vahid Rezaei

A profile hidden Markov model (PHMM) is widely used in assigning protein sequences to protein families. In this model, the hidden states only depend on the previous hidden state and observations are independent given hidden states. In other words, in the PHMM, only the information of the left side of a hidden state is considered. However, it makes sense that considering the information of the b...

In this paper, absorbing Markov chain models are developed to determine the optimum process mean levels for both a single-stage and a serial two-stage production system in which items are inspected for conformity with their specification limits. When the value of the quality characteristic of an item falls below a lower limit, the item is scrapped. If it falls above an upper limit, the item is ...

Jyothsna Kanithi Vijaya Laxmi Pikkala

This paper presents the analysis of a renewal input  finite buffer queue wherein the customers can decide either to  join the queue with a probability or balk. The service process is Markovian service process ($MSP$) governed  by an underlying $m$-state Markov chain. Employing the supplementary  variable and imbedded Markov chain techniques,   the steady-state system length distributions at pre...

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