Sökning: "imbalanced dataset"

Visar resultat 1 - 5 av 50 uppsatser innehållade orden imbalanced dataset.

  1. 1. Improving echocardiogram view classification using diffusion models

    Master-uppsats, Göteborgs universitet/Institutionen för data- och informationsteknik

    Författare :Luis Arevalo; Anouka Ranby; [2023-10-23]
    Nyckelord :Computer; science; computer science; engineering; project; artificial intelligence; machine learning; deep neural networks; diffusion models; synthetic data; echocardiogram classification;

    Sammanfattning : In the field of medical science datasets are often highly imbalanced, where rare datapoints are of high importance. This study aims to explore the usage of synthetic datasets to improve the classification of echocardiogram views. LÄS MER

  3. 2. The Demos Index

    Kandidat-uppsats, Lunds universitet/Statsvetenskapliga institutionen

    Författare :Axel Simonsson; [2023]
    Nyckelord :Demos; Boundary Problem; Democracy Evaluation; Nationalist Principle; All-Affected Principle; Coercion Principle; Mixed Methods; Democracy Index; Demos Index; Law and Political Science;

    Sammanfattning : Democracy is both a question of who the people are (demos) and how they rule (kratos); our understanding of democracy is imbalanced in favour of the latter. The aim of this thesis is to conduct a pilot project evaluating and comparing the level of democracy from a demos perspective through an index. LÄS MER

  4. 3. Predicting morphological effect of compounds on COVID-19 infected cells

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Läkemedelsdesign och läkemedelsutveckling

    Författare :Viktor Öhrner; [2023]
    Nyckelord :QSAR; ML; AI; bioinformatics; COVID-19; morphological profiles;

    Sammanfattning : The cost of developing new drugs is high and the aim of computer-assisted drug discovery is to reduce that development cost, either through virtual screening or generating novel compounds. System biology is one approach to drug discovery where the response of a biological system is the subject of study, instead of drug target interaction. LÄS MER

  5. 4. Evaluation of machine learning models for classifying malicious URLs

    Uppsats för yrkesexamina på grundnivå, Högskolan i Gävle/Datavetenskap

    Författare :Shayan Abad; Hassan Gholamy; [2023]
    Nyckelord :Machine learning; Cyber security; Classification; Malicious URL; Instance selection;

    Sammanfattning : Millions of new websites are created daily, making it challenging to determine which ones are safe. Cybersecurity involves protecting companies and users from cyberattacks. Cybercriminals exploit various methods, including phishing attacks, to trick users into revealing sensitive information. LÄS MER

  7. 5. Quality Assuring an Image Data Pipeline with Transfer Learning : Using Computer Vision Methodologies

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

    Författare :David Wiberg; [2023]
    Nyckelord :Computer vision; Deep Learning; AI; Datorseende; IT; Kvalitetssäkra; neurala nätverk; AI;

    Sammanfattning : The computer vision field has taken big steps forwards and the amount of models and datasets that are being released is increasing. A large number of contemporary models are the result of extensive training sessions on massive datasets, reflecting a significant investment of time and computational resources. LÄS MER