Essays about: "HMMs"

Showing result 16 - 20 of 21 essays containing the word HMMs.

  1. 16. Anomaly detection in videosurveillance feeds

    University essay from Umeå universitet/Institutionen för matematik och matematisk statistik

    Author : Jonas Nordlöf; [2015]
    Keywords : ;

    Abstract : Traditional passive surveillance is proving ineffective as the number of available cameras for an operator often exceeds the operators ability to monitor them. Furthermore, monitoring surveillance cameras requires a focus that operators can only uphold for a short amount of time. READ MORE

  3. 17. Adding temporal plasticity to a self-organizing incremental neural network using temporal activity diffusion

    University essay from KTH/Skolan för datavetenskap och kommunikation (CSC)

    Author : Emil Lundberg; [2015]
    Keywords : ANN; artificial neural network; SOINN; SOTPAR; SOTPAR2; prediction; spatio-temporal pattern detection; temporal activity diffusion; pattern recognition; unsupervised learning; vector quantization; ANN; artificiellt neuralt nätverk; artificiella neurala nätverk; SOINN; SOTPAR; SOTPAR2; förutsägelse; spatio-temporal mönsterdetekion; temporal aktivitetsdiffusion; mönsterigenkänning; oövervakad inlärning; vektorkvantisering;

    Abstract : Vector Quantization (VQ) is a classic optimization problem and a simple approach to pattern recognition. Applications include lossy data compression, clustering and speech and speaker recognition. READ MORE

  4. 18. A critical examination of deep learningapproaches to automated speech recognition

    University essay from KTH/Skolan för datavetenskap och kommunikation (CSC)

    Author : NIZAR GANDY ASSAF LAYOUSS; [2014]
    Keywords : ;

    Abstract : Recently, deep learning techniques have been successfully applied to automatic speech recognition (ASR) tasks. Most current speech recognition systems use Hidden Markov Models (HMMs) to deal with the temporal variability of speech and Gaussian mixture models (GMMs) are exploited to model the emission probability of the HMM. READ MORE

  5. 19. Unsupervised hidden Markov model for automatic analysis of expressed sequence tags

    University essay from Bioinformatik

    Author : Andrei Alexsson; [2011]
    Keywords : Machine learning; Markov Model; Hidden Markov Model; Expressed sequence tag; EST; Baum-Welch; 1-best; Unsupervised; Supervised; GHMM;

    Abstract : This thesis provides an in-depth analyze of expressed sequence tags (EST) that represent pieces of eukaryotic mRNA by using unsupervised hidden Markov model (HMM). ESTs are short nucleotide sequences that are used primarily for rapid identificationof new genes with potential coding regions (CDS). READ MORE

  6. 20. Algorithmic Trading : Hidden Markov Models on Foreign Exchange Data

    University essay from Matematiska institutionen

    Author : Patrik Idvall; Conny Jonsson; [2008]
    Keywords : Algorithmic Trading; Exponentially Weighted Expectation Maximization Algorithm; Foreign Exchange; Gaussian Mixture Models; Hidden Markov Models;

    Abstract : In this master's thesis, hidden Markov models (HMM) are evaluated as a tool for forecasting movements in a currency cross. With an ever increasing electronic market, making way for more automated trading, or so called algorithmic trading, there is constantly a need for new trading strategies trying to find alpha, the excess return, in the market. READ MORE