Sökning: "distance metric"

Visar resultat 1 - 5 av 43 avhandlingar innehållade orden distance metric.

1. 1. Geometric Models of Similarity

   Författare :Mikael Johannesson; Kognitionsvetenskap; []
   Nyckelord :HUMANIORA; HUMANITIES; symmetry; similarity; separable dimensions; prominence; multidimensional scaling; Minkowski metric; machine learning; integral dimensions; familiarity; geometric models; distance metric; asymmetry; conceptual spaces; Computer science; numerical analysis; systems; control; Datalogi; numerisk analys; system; kontroll; Geometry; algebraic topology; Geometri; algebraisk topologi;

   Sammanfattning : This dissertation examines and discusses some phenomena related to the geometric representation of similarity. It takes its inspiration from the existing body of empirical research within the fields of perceptual and cognitive psychology, but also connects to certain areas of machine learning. LÄS MER

3. 2. Data association algorithms and metric design for trajectory estimation

   Författare :Abu Sajana Rahmathullah; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; metrics; smoothing; expectation maximization; Gaussian mixtures; data association; Trajectory estimation;

   Sammanfattning : This thesis is concerned with trajectory estimation, which finds applications in various fields such as automotive safety and air traffic surveillance. More specifically, the thesis focuses on the data association part of the problem, for single and multiple targets, and on performance metrics. LÄS MER

4. 3. Computational problems in evolution : Multiple alignment, genome rearrangements, and tree reconstruction

   Författare :Isaac Elias; Jens Lagergren; Lior Pachter; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Distance Methods; Tree reconstruction; Sorting by Transpositions; multiple alignment; ancestral sequences; Computer science; Datavetenskap;

   Sammanfattning : Reconstructing the evolutionary history of a set of species is a fundamental problem in biology. This thesis concerns computational problems that arise in different settings and stages of phylogenetic tree reconstruction, but also in other contexts. LÄS MER

5. 4. Distributed Immersive Participation : Realising Multi-Criteria Context-Centric Relationships on an Internet of Things

   Författare :Jamie Walters; Theo Kanter; Roch Glitho; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; pervasive computing; ubiquitous computing; mediasense; context; context awareness; context centric; peer-to-peer; immersive participation; multi-criteria context; context proximity; context distance; evolving context; context-aware query languages; publish.subscribe; distributed context awareness; sensor information; context information; context models; context relationships; context relations; Computer and Systems Sciences; data- och systemvetenskap;

   Sammanfattning : Advances in Internet-of-Things integrate sensors and actuators in everyday items or even people transforming our society at an accelerated pace. This occurs in areas such as agriculture, logistics, transport, healthcare, and smart cities and has created new ways to interact with and experience entertainment, (serious) games, education, etc. LÄS MER

7. 5. Model Order Reduction Based on Semidefinite Programming

   Författare :Aivar Sootla; Institutionen för reglerteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; model reduction; parameterized model reduction; nu-gap metric; semidefinite programming; frequency response matching.;

   Sammanfattning : The main topic of this PhD thesis is complexity reduction of linear time-invariant models. The complexity in such systems is measured by the number of differential equations forming the dynamical system. This number is called the order of the system. LÄS MER