Essays about: "change-point detection"

Showing result 1 - 5 of 21 essays containing the words change-point detection.

  1. 1. An empirical study of the impact of data dimensionality on the performance of change point detection algorithms

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Léo Noharet; [2023]
    Keywords : Time series segmentation; Change point detection; Multivariate time series; Data dimensionality; Tidsserie-segmentering; Förändringspunkts detektering; Mulitvariabla tidsserier; Data dimentionalitet;

    Abstract : When a system is monitored over time, changes can be discovered in the time series of monitored variables. Change Point Detection (CPD) aims at finding the time point where a change occurs in the monitored system. READ MORE

  3. 2. Improving Change Point Detection Using Self-Supervised VAEs : A Study on Distance Metrics and Hyperparameters in Time Series Analysis

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Daniel Workinn; [2023]
    Keywords : Change point detection; Time series data; Segmentation; Machine learning; Data mining; Detektion av brytpunkter; Tidsseriedata; Segmentering; Maskininlärning; Datautvinning;

    Abstract : This thesis addresses the optimization of the Variational Autoencoder-based Change Point Detection (VAE-CP) approach in time series analysis, a vital component in data-driven decision making. We evaluate the impact of various distance metrics and hyperparameters on the model’s performance using a systematic exploration and robustness testing on diverse real-world datasets. READ MORE

  4. 3. Exploring Change Point Detection in Network Equipment Logs

    University essay from Karlstads universitet/Institutionen för matematik och datavetenskap (from 2013)

    Author : Tim Björk; [2021]
    Keywords : Change point detection; log change detection; time series data; signal processing;

    Abstract : Change point detection (CPD) is the method of detecting sudden changes in timeseries, and its importance is great concerning network traffic. With increased knowledge of occurring changes in data logs due to updates in networking equipment,a deeper understanding is allowed for interactions between the updates and theoperational resource usage. READ MORE

  5. 4. Prominent variable detection in lipid nanoparticle experiments : A simulation study on non-parametric change point analysis

    University essay from Uppsala universitet/Statistiska institutionen

    Author : Hongru Zhai; [2020]
    Keywords : ;

    Abstract : Images as important sources of information, powered by the newest robotic microscopy technologies, make the volume of data available larger than ever before. From the images, hundreds of variables can be calculated. READ MORE

  6. 5. Change Point Detection and Kernel Ridge Regression for Trend Analysis on Financial Data

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : David Petersson; Emil Backman; [2018]
    Keywords : ;

    Abstract : The investing market can be a cold ruthless place for the layman. In order to get the chance of making money in this business one must place countless hours on research, with many different parameters to handle in order to reach success. To reduce the risk, one must look to many different companies operating in multiple fields and industries. READ MORE