Sökning: "hidden Markov models"

Visar resultat 1 - 5 av 54 avhandlingar innehållade orden hidden Markov models.

  1. 1. Hidden Markov models Identification, control and inverse filtering

    Detta är en avhandling från KTH Royal Institute of Technology

    Författare :Robert Mattila; KTH.; [2018]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hidden markov models; system identification; method of moments; inverse filtering; abdominal aortic aneurysm; medical; markov decision process; structure; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : The hidden Markov model (HMM) is one of the workhorse tools in, for example, statistical signal processing and machine learning. It has found applications in a vast number of fields, ranging all the way from bioscience to speech recognition to modeling of user interactions in social networks. LÄS MER

  2. 2. Hidden Markov models - Traffic modeling and subspace methods

    Detta är en avhandling från Centre for Mathematical Sciences, Lund University

    Författare :Sofia Andersson; Lunds universitet.; Lund University.; [2002]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; programming; actuarial mathematics; Statistik; operationsanalys; Statistics; operations research; subspace identification; state space representation; likelihood estimation; Poissonification; traffic analysis; hidden Markov model; Markov-modulated Poisson process; programmering; aktuariematematik;

    Sammanfattning : The main motivation for this thesis, however not the only one, is the search for models for traffic in telecommunication networks. Traffic characterization and modeling are of great importance in the analysis and dimensioning of communication systems. During the last decades we have experienced an explosive growth of our telecommunication networks. LÄS MER

  3. 3. Modelling Allelic and DNA Copy Number Variations using Continuous-index Hidden Markov Models

    Detta är en avhandling från Mathematical Statistics, Centre for Mathematical Sciences, Lund University

    Författare :Susann Stjernqvist; Lunds universitet.; Lund University.; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Hidden Markov models; DNA copy number; allelic copy number; Markov chain Monte Carlo;

    Sammanfattning : Popular Abstract in Swedish DNA i form av kromosomer finns i cellerna och innehåller information som styr flertalet av kroppens funktioner. Människor har vanligtvis 23 par kromosomer, där den ena kromosomen i ett par härstammar från personens mamma och den andra från dess pappa. LÄS MER

  4. 4. Probabilistic Sequence Models with Speech and Language Applications

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Gustav Eje Henter; KTH.; [2013]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Time series; acoustic modelling; speech synthesis; stochastic processes; causal-state splitting reconstruction; robust causal states; pattern discovery; Markov models; HMMs; nonparametric models; Gaussian processes; Gaussian process dynamical models; nonlinear Kalman filters; information theory; minimum entropy rate simplification; kernel density estimation; time-series bootstrap;

    Sammanfattning : Series data, sequences of measured values, are ubiquitous. Whenever observations are made along a path in space or time, a data sequence results. To comprehend nature and shape it to our will, or to make informed decisions based on what we know, we need methods to make sense of such data. LÄS MER

  5. 5. Speech Enhancement Using Nonnegative MatrixFactorization and Hidden Markov Models

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Nasser Mohammadiha; KTH.; [2013]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Speech enhancement; noise reduction; nonnegative matrix factorization; hidden Markov model; probabilistic latent component analysis; online dictionary learning; super-Gaussian distribution; MMSE estimator; temporal dependencies; dynamic NMF;

    Sammanfattning : Reducing interference noise in a noisy speech recording has been a challenging task for many years yet has a variety of applications, for example, in handsfree mobile communications, in speech recognition, and in hearing aids. Traditional single-channel noise reduction schemes, such as Wiener filtering, do not work satisfactorily in the presence of non-stationary background noise. LÄS MER