Essays about: "Frequency Domain Decomposition"

Showing result 1 - 5 of 7 essays containing the words Frequency Domain Decomposition.

  1. 1. Automated error matching system using machine learning and data clustering : Evaluating unsupervised learning methods for categorizing error types, capturing bugs, and detecting outliers.

    University essay from Linköpings universitet/Programvara och system

    Author : Jonatan Bjurenfalk; August Johnson; [2021]
    Keywords : Unsupervised learning; machine learning; clustering; DBSCAN; HDBSCAN; X-Means; outlier detection; error log clustering;

    Abstract : For large and complex software systems, it is a time-consuming process to manually inspect error logs produced from the test suites of such systems. Whether it is for identifyingabnormal faults, or finding bugs; it is a process that limits development progress, and requires experience. READ MORE

  3. 2. Spectral Portfolio Optimisation with LSTM Stock Price Prediction

    University essay from KTH/Matematisk statistik

    Author : Nancy Wang; [2020]
    Keywords : Artificial Neural Network; LSTM; Spectral factor model; Portfolio optimisation; Stock price prediction; Time series analysis; Risk estimation; Spectral risk; Frequency-specific beta decomposition; Artificiella neurala nätverk; LSTM; Spektralfaktormodell; Portföljoptimering; Aktieprispredikering; Tidsserieranalys; Riskestimering; Spektra risk; Frekvensspecifik beta dekomposition;

    Abstract : Nobel Prize-winning modern portfolio theory (MPT) has been considered to be one of the most important and influential economic theories within finance and investment management. MPT assumes investors to be riskaverse and uses the variance of asset returns as a proxy of risk to maximise the performance of a portfolio. READ MORE

  4. 3. Quantification of similarity between dickcissel song dialects

    University essay from Lunds universitet/Matematisk statistik

    Author : Patrik Andrén; [2020]
    Keywords : Mathematics and Statistics;

    Abstract : In this thesis, five methods of scoring the similarity of phrases from dickcissel birds are explored. The methods are tested on real and simulated data. The method that is found to perform the best is a variation of the spectrographic cross-correlation method that also looks at correlation in the frequency domain. READ MORE

  5. 4. Domain Decomposition Methods for Finite Periodic Structures in Electromagnetics

    University essay from KTH/Elektroteknisk teori och konstruktion

    Author : Gustav Casselbrant; [2012]
    Keywords : ;

    Abstract : Long computational times persist on being a limiting factor when designing complex electromagnetic structures. Even though computers get more and more powerful, the most efficient improvement for reducing the necessary time when solving a numerical problem is to change or optimise the used numerical method. READ MORE

  6. 5. When Computers Can Discuss Shape Properties with Each Other

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Xin Yu Yang; [2011]
    Keywords : shape descriptors; variational interpolation; implicit function;

    Abstract : A novel idea for perception of object surfaces is presented by so called "shape descriptors". Such idea is as an abstract level to represent the object surface by some real numbers. It has the similar idea like as the Fourier coefficients of mapping a function f(x) to frequency domain by Fourier transform. READ MORE