Sökning: "time-varying data"

Visar resultat 1 - 5 av 133 avhandlingar innehållade orden time-varying data.

  1. 1. Learning time-varying interaction networks

    Författare :Vinay Jethava; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; probabilistic graphical models; gene microarray expressions; dynamic interactome; time-varying interaction networks;

    Sammanfattning : Most biological systems consist of several subcomponents whichinteract with each other. These interactions govern the overall behaviourof the system; and in turn vary over time and in response to internaland external stress during the course of an experiment. LÄS MER

  3. 2. Efficient Information Visualization of Multivariate and Time-Varying Data

    Författare :Jimmy Johansson; Mikael Jern; Matthew Cooper; Helwig Hauser; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Information visualization; parallel coordinates; interactive analysis; multivariate data; time-varying data; GPU; hardware graphics; Computer science; Datalogi;

    Sammanfattning : Data can be found everywhere, for example in the form of price, size, weight and colour of all products sold by a company, or as time series of daily observations of temperature, precipitation, wind and visibility from thousands of stations. Due to their size and complexity it is intrinsically hard to form a global overview and understanding of them. LÄS MER

  4. 3. Financial Volatility and Time-Varying Risk Premia

    Författare :Peter Hördahl; Nationalekonomiska institutionen; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Monte Carlo methods; Term structure of interest rates; Asymmetric variance; Time-varying risk premia; Volatility forecasting; CAPM; Conditional asset pricing models; Stochastic volatility; Volatility modeling; GARCH; Bond option pricing; Financial science; Finansiering;

    Sammanfattning : This thesis consists of four empirical essays, all dealing with return volatility of financial assets and/or time-varying risk premia. In the first essay, Changing Risk Premia: Evidence from a Small Open Economy, the relation between risk and return is investigated for Swedish stocks. LÄS MER

  5. 4. Distributed Optimization in Time-Varying Environments

    Författare :Marie Maros; Joakim Jaldén; Alex Olshevsky; KTH; []
    Nyckelord :Distributed Optimization; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Solving optimization problems in a distributed manner is critical in many systems. Many relevant systems are distributed in nature in the sense that they consist of autonomous agents that are to come to a joint decision based on a certain metric. LÄS MER

  7. 5. Identification of Time Varying Systems and Application of System Identification to Signal Processing

    Författare :Alf Isaksson; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; System identification; Time varying systems; Signal processing;

    Sammanfattning : Part IA new approach to identification of time varying systems is presented, and evaluated using computer simulations. The new approach is built upon the similarities between recursive least squares identification and Kalman filtering. LÄS MER