Sökning: "group invariance"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden group invariance.

  1. 1. Group Invariant Convolutional Boltzmann Machines

    Master-uppsats, Göteborgs universitet/Institutionen för matematiska vetenskaper

    Författare :Maria Lindström; [2020-12-04]
    Nyckelord :Convolutional Boltzmann Machines; Convolutional neural networks; artificial neural networks; machine learning; group invariance; group equivariance;

    Sammanfattning : We investigate group invariance in unsupervised learning in the context of certain generative networks based on Boltzmann machines. Specifically, we introduce a generalization of restricted Boltzmann machines which is adapted to input data that is acted upon by any compact group G. LÄS MER

  3. 2. Electromagnetic Duality in SO(3) Yang-Mills Theory : Bachelor Thesis

    Kandidat-uppsats, Uppsala universitet/Teoretisk fysik

    Författare :Jim Lundin; [2018]
    Nyckelord :Montonen-Olive conjecture; BPS states; t Hooft-Polyakov monopole; Witten effect; SL 2; Z invariance;

    Sammanfattning : We introduce the historical context and motivation for the search for magnetic monopoles or monopole-like objects. Beginning the theoretical part we investigate the properties of groups as they relate to symmetries in physical theories. LÄS MER

  4. 3. ELECTRICAL BIOIMPEDANCE CEREBRAL MONITORING : A Study of Cerebral Impedance Variation

    Kandidat-uppsats, KTH/Skolan för teknik och hälsa (STH)

    Författare :Shiva Mokhberi; [2016]
    Nyckelord :Electrical Bioimpedance Spectroscopy; Stroke; Hemorrhage; Ischemia; Biomedical Instrumentation; Non-invensive Monitoring;

    Sammanfattning : Stroke is amongst the leading causes of death and disability worldwide. Today diagnosis of Stroke is restricted to fixed imaging facilities which do not provide a rapid diagnostic. A portable device which could provide a non invasive assessment of stroke would therefore decrease the time of diagnosis and increase the chance of survival. LÄS MER

  5. 4. Limits of Relativistic Systems

    Kandidat-uppsats, Uppsala universitet/Teoretisk fysik

    Författare :Marcus Stålhammar; [2015]
    Nyckelord :;

    Sammanfattning : We investigate the massless and tensionless limit for the relativistic particle and string respectively. The interaction with interesting background fields, such as the electromagnetic field in the particle case and the Kalb-Ramond field in the string case, are also studied. LÄS MER

  7. 5. The Anatomy of the Chua circuit

    Kandidat-uppsats, Lunds universitet/Fysiska institutionen

    Författare :Jakob Lavröd; [2014]
    Nyckelord :Chaos; Chua circuit; Lyapunov exponent; Validation; Physics and Astronomy;

    Sammanfattning : The Chua circuit, known to exhibit chaotic behaviour, has been constructed and studied. The goal was to investigate the experimental underpinning of the theory. The component relationship of the resistors, capacitors, inductors and operational amplifiers have been measured and established within their domain of validity. LÄS MER