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Showing result 1 - 5 of 70 essays matching the above criteria.

  1. 1. Evaluating machine learning models for text classification

    University essay from Lunds universitet/Institutionen för reglerteknik

    Author : Jonas Lilja; [2023]
    Keywords : Technology and Engineering;

    Abstract : This thesis will explore the use of AWS machine learning services that enable natural language processing (NLP). More specifically, this work will focus on sentiment analysis of product and service reviews written in Swedish. READ MORE

  3. 2. Neutrino Oscillations and Scalar Non-Standard Interactions at ESSnuSB

    University essay from KTH/Fysik

    Author : William Brorsson; [2023]
    Keywords : ;

    Abstract : This report consists of two parts. Firstly, an introduction to neutrino oscillations is presented. This includes introducing neutrino mass terms into the standard model, the leptonic mixing matrix, neutrino oscillations in vacuum and neutrino oscillations in matter. READ MORE

  4. 3. Dynamic Covariance Modelling Using Generalised Wishart Processes

    University essay from Lunds universitet/Matematisk statistik

    Author : Fredrik Nilsson; [2023]
    Keywords : Covariance matrix; generalised Wishart process; Bayesian inference; Markov chain Monte Carlo; Hamiltonian Monte Carlo; Mathematics and Statistics;

    Abstract : Modern portfolio theory was pioneered by Markowitz who formulated the mean-variance problem, without which any discussion on quantitative approaches to portfolio selection would be incomplete. The framework boils down to finding the expected return $\mu$ and covariance $\Sigma$, after which the solution is proportional to $\Sigma^{-1}\mu$. READ MORE

  5. 4. Ab inito calculation of the formation energy of the sigma phases at 1000 Kelvin : With a five sublattice model for the ternary Iron-Chromium-Nickel system

    University essay from KTH/Materialvetenskap

    Author : Fabian Mathias Veid; [2022]
    Keywords : ;

    Abstract : This project investigates the σ-phase formation energy at 1000 Kelvin using Exact Muffin TIn Orbital (EMTO) method and considers the disordered local moment approach to handle the paramagnetism in a self-consistent manner. The sigma phase is detrimental and causes embrittlement when it occurs primarily in stainless steel and superalloys with Iron (Fe) and Chromium (Cr), which is why it is necessary to understand it better and therefore avoid it. READ MORE

  6. 5. Investigation of sub-surface ocean induction on Jupiter's icy moon Europa

    University essay from Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen; Uppsala universitet/Rymd- och plasmafysik

    Author : Cornelia Ekvall; [2022]
    Keywords : rymdfysik; Jupiter; Europa; magnetiskdipol; JUICE;

    Abstract : Following previous studies, a theoretical model for the induced magnetic field by Europa, one of Jupiter's icy moons, is presented. The aim of the model is to find evidence for the existence of a sub-surface ocean on the moon. READ MORE