Sökning: "sliding-window"

Visar resultat 1 - 5 av 32 uppsatser innehållade ordet sliding-window.

  1. 1. Catch the fraudster : The development of a machine learning based fraud filter

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för systemteknik

    Författare :Anton Andrée; [2020]
    Nyckelord :fraud: detection: fraud detection: machine learning: filter: fraud filter: random forest: RNN: grey list: gray list: non-numerical: features: fraudulent: banking: ecommerce: transaction;

    Sammanfattning : E-commerce has seen a rapid growth the last two decades, making it easy for customers to shop wherever they are. The growth has also led to new kinds of fraudulent activities affecting the customers. LÄS MER

  3. 2. Interharmonic Analysis of Sustainable Energy Sources and Loads : Comparing two signal processing methods for estimation of interharmonics

    Kandidat-uppsats, Högskolan Dalarna/Energiteknik

    Författare :Isabelle Löfgren; [2020]
    Nyckelord :interharmonics; short time Fourier transform; desynchronized processing technique; sliding-window ESPRIT; power quality; signal processing;

    Sammanfattning : In this report, studies on interharmonics from three different measurement sites are performed. The first site is a wind park with three turbines, where the measurements are performed at the point of common coupling of these three. LÄS MER

  4. 3. Reconstruction of challenging signatures characteristic to new physics beyond the Standard Model

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Högenergifysik

    Författare :Timmy Lindgren; [2020]
    Nyckelord :Reconstruction; Identification; photon-jets; ATLAS;

    Sammanfattning : A study of photon-jets and their identification variables computed in the electromagnetic calorimeter of an in-house, ATLAS-like, detector model developed at Uppsala University for full-simulations is presented. The signal, which is based on the Composite Higgs Model, considers the pair production of vector-like top quarks, denoted t', with the successive decays t' to S and a Standard Model top quark and S to two photons, where S is a new pseudo-scalar boson. LÄS MER

  5. 4. Time series monitoring and prediction of data deviations in a manufacturing industry

    M1-uppsats, Linnéuniversitetet/Institutionen för datavetenskap och medieteknik (DM)

    Författare :Robin Lantz; [2020]
    Nyckelord :Machine learning; Supervised learning; Time series classification; Manufacturing industry; Production data; Data deviations; Support Vector Machine; K-Nearest Neighbours; Linear Regression; Decision Tree; Random Forest; Neural Network; Recurrent Neural Network; Computer Science; Maskininlärning; Tidsserier; Tillverkningsindustri; Klassificerare; Avvikelser;

    Sammanfattning : An automated manufacturing industry makes use of many interacting moving parts and sensors. Data from these sensors generate complex multidimensional data in the production environment. This data is difficult to interpret and also difficult to find patterns in. LÄS MER

  7. 5. A machine learning analysis of photographs of the Öresund bridge

    Kandidat-uppsats, Högskolan Kristianstad/Avdelningen för datavetenskapHögskolan Kristianstad/Fakulteten för ekonomi; Högskolan Kristianstad/Avdelningen för datavetenskapHögskolan Kristianstad/Fakulteten för ekonomi

    Författare :Martijn de Redelijkheid; Kristian Kokoneshi; [2020]
    Nyckelord :Machine Learning; Image Processing; Structural Health Management; Neural Networks; Convolutional Neural Networks; Concrete Crack Detection; Öresund Bridge;

    Sammanfattning : This study presents an exploration of several machine learning and image processing theories, as well as a literature review of several previous works on concrete crack detection systems. Through the literature review a system is selected and implemented with the Öresund bridge photograph collection. LÄS MER