Sökning: "cusum"

Visar resultat 1 - 5 av 35 uppsatser innehållade ordet cusum.

  1. 1. Workload Detection and Continuous Automatic Bayesian Optimization in Database Management Systems

    Master-uppsats, Lunds universitet/Institutionen för datavetenskap

    Författare :Jonas Boström; Viktor Olsson; [2022]
    Nyckelord :Technology and Engineering;

    Sammanfattning : The goal of this thesis has been to investigate the possibility of multi-workload optimization in Database Management Systems and workload detection. A system was successfully constructed to allow for multi-workload testing and data aggregation. LÄS MER

  3. 2. Generation and Detection of Adversarial Attacks for Reinforcement Learning Policies

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

    Författare :Axel Drotz; Markus Hector; [2021]
    Nyckelord :Deep Reinforcement Learning; Adversarial Attacks; Adversarial Attack Detection; Fast Gradient Sign Method; Deep Deterministic Policy Gradient; Deep Q-Learning; Likelihood Ratio Test; CUSUM;

    Sammanfattning : In this project we investigate the susceptibility ofreinforcement rearning (RL) algorithms to adversarial attacks.Adversarial attacks have been proven to be very effective atreducing performance of deep learning classifiers, and recently,have also been shown to reduce performance of RL agents. LÄS MER

  4. 3. Abnormality detection in diagnostics data from network cameras

    Master-uppsats, Lunds universitet/Matematik LTH

    Författare :André Hedesand; Oliver Dageson; [2021]
    Nyckelord :machine learning; change detection; anomaly detection; data synthesis; forecasting; gradient boost; Mathematics and Statistics;

    Sammanfattning : For data-driven companies, there is a need to efficiently navigate through big quantities of collected data. In our case; detecting changes in the behaviour of data. We have investigated whether machine learning could be applied to automate the process of finding abnormal behaviour (anomalies) in collected data. LÄS MER

  5. 4. Detection of Long Term Vibration Deviations in GasTurbine Monitoring Data

    Master-uppsats, Linköpings universitet/Fordonssystem

    Författare :Johan Hansson; [2020]
    Nyckelord :Machine Learning; Vibrations;

    Sammanfattning : Condition based monitoring is today essential for any machine manufacturer tobe able to detect and predict faults in their machine fleet. This reduces the maintenancecost and also reduces machine downtime. LÄS MER

  7. 5. Intrångsdetektering på CAN bus data : En studie för likvärdig jämförelse av metoder

    Kandidat-uppsats, Högskolan i Halmstad/Akademin för informationsteknologi

    Författare :Pontus Hedman; Vasilios Skepetzis; [2020]
    Nyckelord :CUSUM; random Forests; CAN Bus; anomaly detection; change point detection; machine learning; outlier detection; intrusion detection system; CUSUM; random forests; CAN Bus; anomaly detection; change point detection; machine learning; outlier detection; intrusion detection system;

    Sammanfattning : Utförda hacker-attacker på moderna fordon belyser ett behov av snabb detektering av hot inom denna miljö, särskilt när det förekommer en trend inom denna industri där moderna fordon idag kan klassas som IoT-enheter. Det förekommer kända fall av attacker där en angripare förmår stoppa fordon i drift, eller ta bromsar ur funktion, och detta har påvisats ske fjärrstyrt. LÄS MER