1 Baskin Center for Computer S ien e and Engineering, University of California, Santa Cruz, CA 95064, U.S.A. E-mail: rlyngsoe se.u s .edu 2 BiRC⋆ ⋆ ⋆, Department of Computer S ien e, University of Aarhus, Ny Munkegade, DK-8000 Århus C, Denmark. E-mail: storm daimi.au.dk. Abstra t The basi theory of hidden Markov models was developed and applied to problems in spee h re ognition in the late 1960...

Due to the effective role of Markov models in customer relationship management (CRM), there is a lack of comprehensive literature review which contains all related literatures. In this paper the focus is on academic databases to find all the articles that had been published in 2011 and earlier. One hundred articles were identified and reviewed to find direct relevance for applying Markov models...

Repairable standby system’s study and analysis is an important topic in reliability. Analytical techniques become very complicated and unrealistic especially for modern complex systems. There have been attempts in the literature to evolve more realistic techniques using simulation approach for reliability analysis of systems. This paper proposes a hybrid approach called as Markov system ...

 In this paper we study the relative entropy rate between a homogeneous Markov chain and a hidden Markov chain defined by observing the output of a discrete stochastic channel whose input is the finite state space homogeneous stationary Markov chain. For this purpose, we obtain the relative entropy between two finite subsequences of above mentioned chains with the help of the definition of...

land use changes are one of the important consequences of urban spatial extent. regarding the role of green space as one of important land use classes in urban ecosystems, the investigations of its changes seem to be crucial. in this study, to estimate the changes of green space, the ndvi index was applied to tm and irs images of 1990 and 2006 and green space maps of district 1 of tehran munici...

Many mechanisms to improve the performance have been proposed in the IEEE 802.15.4 Wireless sensor networks area, due to its high influence in the modern day world. Most of them have improved the performance of the network compared to the standard CSMA/CA backoff method. But still there are improvements to almost every method proposed. In this paper, we have proposed a hybrid binary exponential...

We consider the elementary divisors and determinant of a uniformly distributed n n random matrix with entries in the ring of integers of an arbitrary local eld. We show that the sequence of elementary divisors is in a simple bijective correspondence with a Markov chain on the nonnegative integers. The transition dynamics of this chain do not depend on the size of the matrix. As n ! 1, all but n...

The existence of multiple wireless networks with different radio access technologies and protocols makes the radio environment heterogeneous. In order to provide the best Quality of Service available from the active networks, and satisfy the concept of always best connected, one can take advantage of this heterogeneity by developing multi-mode terminals able to smartly switch from one interface...

Studies of the IEEE 802.15.4 Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) scheme have been received considerable attention recently, with most of these studies focusing on homogeneous or saturated traffic. Two novel transmission schemes-OSTS/BSTS (One Service a Time Scheme/Bulk Service a Time Scheme)-are proposed in this paper to improve the behaviors of time-critical buffer...