Sökning: "Bayesian Filtering"

Visar resultat 1 - 5 av 24 uppsatser innehållade orden Bayesian Filtering.

  1. 1. Track Before Detect in Active Sonar Systems

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Signaler och system

    Författare :Johnny Ljung; [2021]
    Nyckelord :signal processing; active sonar systems; track-before-detect; target tracking; reverberation; signalbehandling; aktiva sonarsystem; spårning innan detektion; målspårning; reverberation;

    Sammanfattning : Detection of an underwater target with active sonar in shallow waters such as the Baltic sea is a big challenge. This since the sound beams from the sonar will be reflected on the surfaces, sea surface and sea bottom, and the water volume itself which generates reverberation. LÄS MER

  3. 2. A Bayesian Filtering Approach to Incorporate Views in Economic Scenario Generation

    Master-uppsats, Lunds universitet/Matematisk statistik

    Författare :Arvid Cederberg; [2020]
    Nyckelord :Mathematics and Statistics;

    Sammanfattning : .... LÄS MER

  4. 3. Traffic State Estimation for Signalized Intersections : A Combined Gaussian Process Bayesian Filter Approach

    Master-uppsats, KTH/Transportplanering

    Författare :Michael Sederlin; [2020]
    Nyckelord :Traffic State Estimation; Traffic Flow modelling; Gaussian Processes; Bayesian Filtering; Kalman Filter; Traffic Signals; Intersection; Non-parametric;

    Sammanfattning : Traffic State Estimation (TSE) is a vital component in traffic control which requires an accurate viewof the current traffic situation. Since there is no full sensor coverage and the collected measurementsare inflicted with random noise, statistical estimation techniques are necessary to accomplish this. LÄS MER

  5. 4. Recommender System for Gym Customers

    Master-uppsats, Linköpings universitet/Statistik och maskininlärning

    Författare :Roshni Sundaramurthy; [2020]
    Nyckelord :Recommender system; collaborative filtering; matrix factorization; sparse matrix; latent semantic analysis; singular value decomposition; alternating least square; Bayesian personalized ranking; logistic matrix factorization; stochastic gradient descent; AUC metric; mean average precision; normalized discounted cumulative gain; Rekommendationssystem;

    Sammanfattning : Recommender systems provide new opportunities for retrieving personalized information on the Internet. Due to the availability of big data, the fitness industries are now focusing on building an efficient recommender system for their end-users. This thesis investigates the possibilities of building an efficient recommender system for gym users. LÄS MER

  7. 5. An application of Bayesian Hidden Markov Models to explore traffic flow conditions in an urban area

    Master-uppsats, Uppsala universitet/Statistiska institutionen

    Författare :Lovisa Andersson; [2019]
    Nyckelord :Bayesian statistics; hidden states; Markov chain; traffic flow modeling; filtering; smoothing; most probable state sequence; MCMC; Hamiltonian Monte Carlo; No-U-Turn sampler;

    Sammanfattning : This study employs Bayesian Hidden Markov Models as method to explore vehicle traffic flow conditions in an urban area in Stockholm, based on sensor data from separate road positions. Inter-arrival times are used as the observed sequences. LÄS MER