Sökning: "hidden Markov model"

Visar resultat 26 - 30 av 70 avhandlingar innehållade orden hidden Markov model.

1. 26. Formalizing life : Towards an improved understanding of the sequence-structure relationship in alpha-helical transmembrane proteins

   Författare :Håkan Viklund; Arne Elofsson; Kimmen Sjölander; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; bioinformatics; protein; topology; hidden Markov model; prediction; Bioinformatics; Bioinformatik; Biochemistry; biokemi;

   Sammanfattning : Genes coding for alpha-helical transmembrane proteins constitute roughly 25% of the total number of genes in a typical organism. As these proteins are vital parts of many biological processes, an improved understanding of them is important for achieving a better understanding of the mechanisms that constitute life. LÄS MER

3. 27. Bayesian Modeling of Directional Data with Acoustic and Other Applications

   Författare :Jalil Taghia; Arne Leijon; W. Bastiaan Kleijn; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Directional statistics; directional distributions; axial distributions; von Mises-Fisher distribution; complex Watson distribution; complex Bingham distribution; Bayesian inference; probabilistic modeling; variational inference; two-dimensional hidden Markov models; Markov chain; blind source separation; frequency domain BSS; underdetermined BSS; online BSS; Bayesian recursive; gene expression data; gene-microarray data; line spectral frequency; speaker identification. ii;

   Sammanfattning : A direction is defined here as a multi-dimensional unit vector. Such unitvectors form directional data. Closely related to directional data are axialdata for which each direction is equivalent to the opposite direction.Directional data and axial data arise in various fields of science. LÄS MER

4. 28. Timing and Schedulability Analysis of Real-Time Systems using Hidden Markov Models

   Författare :Anna Friebe; Thomas Nolte; Alessandro Papadopoulos; Filip Markovic; Liliana Cucu-Grosjean; Mälardalens universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Computer Science; datavetenskap;

   Sammanfattning : In real-time systems functional requirements are coupled to timing requirements, a specified event needs to occur at the appropriate time.  In order to ensure that timing requirements are fulfilled, there are two main approaches, static and measurement-based. LÄS MER

5. 29. Financial Applications of Markov Chain Monte Carlo Methods

   Författare :Andreas Graflund; Nationalekonomiska institutionen; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Finansiering; Financial science; ekonomiska system; ekonomisk politik; ekonomisk teori; Nationalekonomi; economic policy; economic systems; economic theory; Economics; econometrics; Mean Reversion; Diversification; Real Estate Stocks; Markov Chain Monte Carlo Methods; Stock Markets; ekonometri;

   Sammanfattning : This thesis consists of four empirical studies on financial economics. The first chapter contains a short summary of the thesis. LÄS MER

7. 30. On particle-based online smoothing and parameter inference in general hidden Markov models

   Författare :Johan Westerborn; Jimmy Olsson; Thomas Schön; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : This thesis consists of two papers studying online inference in general hidden Markov models using sequential Monte Carlo methods.The first paper present an novel algorithm, the particle-based, rapid incremental smoother (PaRIS), aimed at efficiently perform online approximation of smoothed expectations of additive state functionals in general hidden Markov models. LÄS MER