Sökning: "A Haraldsson"

Visar resultat 1 - 5 av 30 avhandlingar innehållade orden A Haraldsson.

  1. 1. Neural Network Ensembles and Combinatorial Optimization with Applications in Medicine

    Författare :Henrik Haraldsson; Beräkningsbiologi och biologisk fysik - Genomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; numerisk analys; machine learning; artificial neural networks; ensemble methods; feature extraction; ECG; combinatorial optimization; mean field annealing; Computer science; numerical analysis; systems; Datalogi; control; system; kontroll; Artificial intelligens; Artificiell intelligens; Fysicumarkivet A:2003:Haraldsson;

    Sammanfattning : Artificial neural network (ANN) and combinatorial optimization algorithms are developed, and applied to the medical domain. A novel method for training an ensemble of ANN is presented, based on random weight updates alternated with replication of networks with low error. LÄS MER

  3. 2. A program manipulation system based on partial evaluation

    Författare :Anders Haraldsson; Erik Sandewall; Mats Nordström; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; program manipulation; partial evaluation; program optimization; LISP; beta-expansion; macro-expansion; Computer science; Datavetenskap;

    Sammanfattning : Program manipulation is the task to perform transformations on program code, and is normally done in order to optimize the code with respect of the utilization of some computer resource. Partial evaluation is the task when partial computations can be performed in a program before it is actually executed. LÄS MER

  4. 3. Closed-Loop Combustion Control of a Multi Cylinder HCCI Engine using Variable Compression Ratio and Fast Thermal Management

    Författare :Göran Haraldsson; Förbränningsmotorer; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CR; Motorer; framdrivningssystem; Motors and propulsion systems; Teknik; Technological sciences; Closed-Loop Combustion Control; CLCC; Multi cylinder; HCCI; Black box; System identification; State feedback; PID; LQG; Fast Thermal Management; FTM; VCR Variable Compression Ratio;

    Sammanfattning : The current Spark Ignited (SI) engine equipped with three-way catalyst offers low emissions, but has low efficiency at part load, which results in unnecessarily high CO2 emissions. The Compression Ignited (CI) engines have higher efficiency and hence lower CO2 emissions, but suffer from higher Nitrogen Oxide (NOx) and Particulate Matter (PM) emissions, and no three-way catalyst can be used. LÄS MER

  5. 4. A Study in the Computational Complexity of Temporal Reasoning

    Författare :Mathias Broxvall; Peter Jonsson; Ulf Nilsson; Anders Haraldsson; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; temporal and spatial information; artificiell intelligens; algebra; tractable fragments; temporal formalisms; formalism STP; Computer science; Datavetenskap;

    Sammanfattning : Reasoning about temporal and spatial information is a common task in computer science, especially in the field of artificial intelligence. The topic of this thesis is the study of such reasoning from a computational perspective. LÄS MER

  7. 5. Developing Methods for Modelling Procedures in System Analysis and System Dynamics

    Författare :Hördur Haraldsson; Avdelningen för kemiteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; System Dynamics; System Analysis; group model building; modelling procedures; innovation phases; modelling workflow; Natural science; Naturvetenskap; Technological sciences; Teknik;

    Sammanfattning : System Thinking is the mindset of defining and confining a problem and its symptoms as well as a method for communicating system understanding. System Analysis is taking that problem apart to understand its causalities and structural arrangement. LÄS MER