Sökning: "dold Markovmodell"

Visar resultat 1 - 5 av 11 uppsatser innehållade orden dold Markovmodell.

  1. 1. Reconstruction of Fire Spread with a Markov Random Field Mixture Model

    Master-uppsats, Lunds universitet/Matematisk statistik

    Författare :Marcus Gehrmann; [2023]
    Nyckelord :Forest fire; fire scars; spatial statistics; Markov random field; EM-algorithm; pseudo-likelihood; Mathematics and Statistics;

    Sammanfattning : This thesis revolves around reconstructing fire sizes for historical fires in Jämtgaveln, Sweden based on data of fire scars in trees. We propose a Hidden Markov Model (HMM), where the domain is divided into quadratic grid cells of 250 $\times$ 250 m and with these grid cells we associate a binary Markov random field taking values 0 or 1 corresponding to no fire and fire respectively. LÄS MER

  3. 2. Modelling regime shifts for foreign exchange market data using hidden Markov models

    Master-uppsats, KTH/Matematik (Avd.)

    Författare :Liam Persson; [2021]
    Nyckelord :exchange market data; model selection; hidden Markov model; market regime; correlation; valuta; modellval; dold Markovmodell; marknadsregimer; korrelation;

    Sammanfattning : Financial data is often said to follow different market regimes. These regimes, which not possible to observe directly, are assumed to influence the observable returns. In this thesis such regimes are modeled using hidden Markov models. LÄS MER

  4. 3. Detecting Signal Corruptions in Voice Recordings for Speech Therapy

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

    Författare :Helmer Nylén; [2021]
    Nyckelord :Noise; Classification algorithms; Audio recording; Machine learning; Acoustic signal processing; Störning; Klassificeringsalgoritmer; Ljudinspelning; Maskininlärning; Akustisk signalbehandling;

    Sammanfattning : When recording voice samples from a patient in speech therapy the quality of the recording may be affected by different signal corruptions, for example background noise or clipping. The equipment and expertise required to identify small disturbances are not always present at smaller clinics. LÄS MER

  5. 4. Preprocessing of Nanopore Current Signals for DNA Base Calling

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

    Författare :Josef Malmström; [2020]
    Nyckelord :;

    Sammanfattning : DNA is a molecule containing genetic information in all living organisms and many viruses. The process of determining the underlying genetic code in the DNA of an organism is known as DNA sequencing, and is commonly used for instance to study viruses, perform forensic analysis, and for medical diagnosis. LÄS MER

  7. 5. Automated Intro Detection ForTV Series

    Uppsats för yrkesexamina på grundnivå, KTH/Medicinteknik och hälsosystem

    Författare :Tiago Redaelli; Jacob Ekedahl; [2020]
    Nyckelord :intro detection; Hidden Markov model; feature selection; image similarity comparison; average hash; SVT; intro detektion; dold Markovmodell; attributselektion; bildlikhet; average hash; SVT;

    Sammanfattning : Media consumption has shown a tremendous increase in recent years, and with this increase, new audience expectations are put on the features offered by media-streaming services. One of these expectations is the ability to skip redundant content, which most probably is not of interest to the user. LÄS MER