Search for dissertations about: "hierarchical clustering"

Showing result 1 - 5 of 53 swedish dissertations containing the words hierarchical clustering.

  2. 1. Progress in Hierarchical Clustering & Minimum Weight Triangulation

    Author : Drago Krznaric; Institutionen för datavetenskap; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; computer technology; Systems engineering; minimum spanning tree; complete linkage; hierarchical clustering; minimum weight triangulation; greedy triangulation; Data- och systemvetenskap;

    Abstract : In this thesis we study efficient computational methods for geometrical problems of practical importance and theoretical interest. The problems that we consider are primarily complete linkage clustering, minimum spanning trees, and approximating minimum weight triangulation. Below is a list of the main results proved in the thesis. READ MORE

  4. 2. Self-Organizing Logical-Clustering Topology for Managing Distributed Context Information

    Author : Hasibur Rahman; Theo Kanter; Rahim Rahmani; Athanasios V. Vasilakos; Stockholms universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Internet of Things; Context Information; Clustering; Distributed Computing; Computer and Systems Sciences; data- och systemvetenskap;

    Abstract : Internet of Things (IoT) is on the verge of experiencing a paradigm shift, the focus of which is the integration of people, services, context information, and things in the Connected Society, thus enabling Internet of Everything (IoE). Hundreds of billions of things will be connected to IoT/IoE by 2020. READ MORE

  5. 3. Approximation and Online Algorithms with Applications in Computational Biology and Computational Geometry

    Author : Mia Persson; Data Vetenskap; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; numerisk analys; system; systems; control; Datalogi; numerical analysis; broadcasting; polygon exploration; robotics; Mathematics; Matematik; Computer science; clique partition; clustering; computational complexity; computational geometry; computational biology; online algorithm; kontroll; approximation algorithm;

    Abstract : The main contributions of this thesis are in the area of approximation and online algorithm design and derivation of lower bounds on the approximability for a number of combinatorial optimization problems with applications in computational biology and computational geometry. Approximation and online algorithms are fundamental tools used to deal with computationally hard problems and problems in which the input is gradually disclosed over time. READ MORE

  6. 4. Effective Spatial Mapping for Coupled Code Analysis of Thermal–Hydraulics/Neutron–Kinetics of Boiling Water Reactors

    Author : Joanna Peltonen; Weimin Ma; Maria Avramova; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Boiling Water Reactor; RELAP5; TRACE; PARCS; Coupled TH NK analysis; Spatial Mapping; Turbine Trip; Feedwater Transient; Control Rod Drop; Reactor Stability; Hierarchical Clustering; kokvattenreaktor; reaktoranalys; RELAP5; TRACE; PARCS; TH NK analys; turbin tripp; matarvatten transient; fallande styrstav; reaktor stabilitet; hierarkisk klustringsmetodik; SRA - Energy; SRA - Energi;

    Abstract : Analyses of nuclear reactor safety have increasingly required coupling of full three dimensional neutron kinetics (NK) core models with system transient thermal–hydraulics (TH) codes.  In order to produce results within a reasonable computing time, the coupled codes use two different spatial description of the reactor core. READ MORE

  7. 5. You Bet! : An Investigation of Market Positioning by Online Gambling Firms and Drivers of their Customers’ Gambling Intention

    Author : Jirka Konietzny; Esmail Salehi-Sangari; Albert Caruana; John B. Ford; Luleå tekniska universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; gambling; UTAUT; PLS-SEM; anticipated enjoyment; perceived fairness; DICTION; lexical analysis; hierarchical clustering; Industrial Marketing; Industriell marknadsföring;

    Abstract : Online gambling is a global multibillion dollar business that dwarfs all other forms of entertainment, and yet business and marketing research about it is scarce (Mizerski, 2013). The focus of gambling research has been on problem gamblers who ultimately represent a rather small, albeit important percentage of the gambling population. READ MORE