Sökning: "Unsupervised learning"

Visar resultat 26 - 30 av 361 uppsatser innehållade orden Unsupervised learning.

1. 26. Capturing time variation within systemic risk estimation

   Magister-uppsats, Lunds universitet/Nationalekonomiska institutionen

   Författare :Christian Hovstadius; Baltsar Lindgren; [2023]
   Nyckelord :Systemic risk; CoVaR; State variables; Lasso; PCA; Business and Economics;

   Sammanfattning : Systemic risk can be defined as the risk to the whole financial system. Financial institutions may contribute more or less to this risk, and measuring the systemic risk contributions of institutions is of central importance for regulators. LÄS MER

3. 27. Applying Machine Learning Techniques for Anomaly Detection in Wooden Plank Images

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen Vi3

   Författare :Iza Smedberg; [2023]
   Nyckelord :Anomaly Detection; Machine Vision; Machine Learning; Neural Network;

   Sammanfattning : Anomaly detection is an important first step of quality control in manufacturing processes. In wooden planks, anomalies such as broken knots and resin pockets can lower the quality of the final product. With the help of machine vision, inspections can be made faster, at higher accuracy, and at a lower cost. LÄS MER

4. 28. Fault Detection and Diagnosis for Automotive Camera using Unsupervised Learning

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

   Författare :Ziyou Li; [2023]
   Nyckelord :Unsupervised Learning; Autoencoders; Image Clustering; Fault Detection and Diagnosis; Morphological Operations; Hardware-in-Loop; Advanced DriverAssistance System; Oövervakad inlärning; Autoencoders; Bildklustering; Felfindning och Diagnostik; Morfologiska Operationer; Hardware-in-Loop; Avancerade Förarassistanssystem;

   Sammanfattning : This thesis aims to investigate a fault detection and diagnosis system for automotive cameras using unsupervised learning. 1) Can a front-looking wide-angle camera image dataset be created using Hardware-in-Loop (HIL) simulations? 2) Can an Adversarial Autoencoder (AAE) based unsupervised camera fault detection and diagnosis method be crafted for SPA2 Vehicle Control Unit (VCU) using an image dataset created using Hardware-inLoop? 3) Does using AAE surpass the performance of using Variational Autoencoder (VAE) for the unsupervised automotive camera fault diagnosis model? In the field of camera fault studies, automotive cameras stand out for its complex operational context, particularly in Advanced Driver-Assistance Systems (ADAS) applications. LÄS MER

5. 29. Generative AI for Synthetic Data

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för reglerteknik

   Författare :Esaias Belfrage; August Borna; [2023]
   Nyckelord :Technology and Engineering;

   Sammanfattning : Synthetic data generation has emerged as a valuable technique for addressing data scarcity and privacy concerns and improving machine learning algorithms. This thesis focuses on progressing the field of synthetic data generation, which may play a crucial role in AI-heavy industries such as telecommunications. LÄS MER

7. 30. Anomaly Detection in Financial Transaction Time Series Data

   Master-uppsats, Uppsala universitet/Institutionen för informationsteknologi

   Författare :Leyla Abdul Kader; [2023]
   Nyckelord :;

   Sammanfattning : This master thesis investigates two methods of anomaly detection on financial time series data. It aims to determine an optimal method for anomaly detection with the purpose of flagging anomalous transactions within foreign exchange trading data. It also aims to determine whether the data points flagged as anomalies have any commonalities. LÄS MER