Sökning: "gaussian mixture model"

Visar resultat 1 - 5 av 44 uppsatser innehållade orden gaussian mixture model.

  1. 1. Hierarchical Clustering of Time Series using Gaussian Mixture Models and Variational Autoencoders

    Master-uppsats, Lunds universitet/Matematisk statistik

    Författare :Per Wilhelmsson; [2019]
    Nyckelord :Clustering; Deep Learning; Machine Learning; Time Series; Variational Autoencoders; Gaussian Mixture Models; Mathematics and Statistics;

    Sammanfattning : This thesis proposes a hierarchical clustering algorithm for time series, comprised of a variational autoencoder to compress the series and a Gaussian mixture model to merge them into an appropriate cluster hierarchy. This approach is motivated by the autoencoders good results in dimensionality reduction tasks and by the likelihood framework given by the Gaussian mixture model. LÄS MER

  2. 2. Automatic Speech Quality Assessment in Unified Communication : A Case Study

    Master-uppsats, Linköpings universitet/Programvara och system

    Författare :Kevin Larsson Alm; [2019]
    Nyckelord :speech; voice; communication; qoe; quality of experience; unified communication; uc; speech quality assessment; speech quality; voice calls; gaussian mixture model; gmm; gaussian mixture regression; gmr; mel frequency cepstrum coefficients; mfcc; human feature cepstrum coefficients; hfcc; gammatone frequency cepstral coefficients; gfcc;

    Sammanfattning : Speech as a medium for communication has always been important in its ability to convey our ideas, personality and emotions. It is therefore not strange that Quality of Experience (QoE) becomes central to any business relying on voice communication. LÄS MER

  3. 3. Load Identification from Aggregated Data using Generative Modeling

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Tanay Rastogi; [2019]
    Nyckelord :;

    Sammanfattning : In the view of an exponential increase in demand for energy, there is a need to come up with a sustainable energy consumption system in residential buildings. Several pieces of research show that this can be achieved by providing real-time energy consumption feedback of each appliance to its residents. LÄS MER

  4. 4. Understanding usage of Volvo trucks

    Uppsats för yrkesexamina på avancerad nivå, Högskolan i Halmstad/Akademin för informationsteknologi; Högskolan i Halmstad/Akademin för informationsteknologi

    Författare :Oskar Dahl; Fredrik Johansson; [2019]
    Nyckelord :Machine Learning; Clustering; Usage Behaviors; Association Rule Mining; Gaussian Mixture Models;

    Sammanfattning : Trucks are designed, configured and marketed for various working environments. There lies a concern whether trucks are used as intended by the manufacturer, as usage may impact the longevity, efficiency and productivity of the trucks. LÄS MER

  5. 5. Clustering Based Outlier Detection for Improved Situation Awareness within Air Traffic Control

    Master-uppsats, KTH/Optimeringslära och systemteori

    Författare :Hanna Gustavsson; [2019]
    Nyckelord :Applied Mathematics; Clustering; Spectral Clustering; Graph Theory; GMM; Outlier Detection; Tillämpad matematik; Klustering; Spektralklustering; grafteori; GMM; anomalidetektering;

    Sammanfattning : The aim of this thesis is to examine clustering based outlier detection algorithms on their ability to detect abnormal events in flight traffic. A nominal model is trained on a data-set containing only flights which are labeled as normal. LÄS MER