Sökning: "robust maximum likelihood"

Visar resultat 1 - 5 av 17 uppsatser innehållade orden robust maximum likelihood.

  1. 1. Assessment of Modern Statistical Modelling Methods for the Association of High-Energy Neutrinos to Astrophysical Sources

    Master-uppsats, KTH/Matematisk statistik

    Författare :Valentin Minoz; [2021]
    Nyckelord :Statistics; Astrophysics; Neutrino sources; Mixture models; Monte Carlo methods; Maximum likelihood estimation; Statistik; Astrofysik; Neutrinokällor; Blandningsmodeller; Monte Carlo-metoder; Maximum likelihood-metoden;

    Sammanfattning : The search for the sources of astrophysical neutrinos is a central open question in particle astrophysics. Thanks to substantial experimental efforts, we now have large-scale neutrino detectors in the oceans and polar ice. LÄS MER

  3. 2. Joint Estimation and Calibration for Motion Sensor

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

    Författare :Peng Liu; [2020]
    Nyckelord :State space model; accelerometer array; parameter estimation; Maximum Likelihood; Expectation Maximization; Gradient Descent; ill-conditioned matrix.; tillståndsmodell; accelerometerarray; parameterskattning; maximimetoden; väntevärdesmaximering; gradientsökning; illakonditionerade matriser.;

    Sammanfattning : In the thesis, a calibration method for positions of each accelerometer in an Inertial Sensor Array (IMU) sensor array is designed and implemented. In order to model the motion of the sensor array in the real world, we build up a state space model. Based on the model we use, the problem is to estimate the parameters within the state space model. LÄS MER

  4. 3. Can Ethnic Diversity Explain the Varying Effects of Regional Trade Agreements?

    Master-uppsats, Lunds universitet/Nationalekonomiska institutionen

    Författare :Alexandra Sundmark; [2020]
    Nyckelord :Preferential Trade; Ethnic Fractionalization; Ethnic Polarisation; Heterogeneous Effects; PPML; Business and Economics;

    Sammanfattning : In response to the recent stagnation of global economic integration, a large part of world trade today transpires within the boundaries of regional trade agreements (RTAs). However, trade effects are heterogeneous both across and within RTAs - a phenomenon not fully understood. LÄS MER

  5. 4. Investigation on Positioning Techniques for Indoor Office Scenario

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Yan Shu; Yujie Zhang; [2020]
    Nyckelord :Technology and Engineering;

    Sammanfattning : This master thesis aims to investigate downlink positioning techniques and improve fifth-generation (5G) cellular positioning performance in the indoor office scenario. In the thesis work, we target in the indoor office scenario because it is a typical deployment scenario standardized in 3GPP release 16. LÄS MER

  7. 5. Graph Neural Networks and Learned Approximate Message Passing Algorithms for Massive MIMO Detection

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

    Författare :Andrea Scotti; [2020]
    Nyckelord :;

    Sammanfattning : Massive multiple-input and multiple-output (MIMO) is a method to improvethe performance of wireless communication systems by having a large numberof antennas at both the transmitter and the receiver. In the fifth-generation(5G) mobile communication system, Massive MIMO is a key technology toface the increasing number of mobile users and satisfy user demands. LÄS MER