Sökning: "graph representation"

Visar resultat 1 - 5 av 68 avhandlingar innehållade orden graph representation.

  1. 1. Order-preserving graph grammars

    Författare :Petter Ericson; Henrik Björklund; Frank Drewes; Sebastian Maneth; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Graph grammars; graph parsing; graph series; hyperedge replacement; uniform parsing problem; abstract meaning representation; semantic modelling; order preservation; reentrancy preservation; minimally adequate teacher; weighted graph grammars;

    Sammanfattning : The field of semantic modelling concerns formal models for semantics, that is, formal structures for the computational and algorithmic processing of meaning. This thesis concerns formal graph languages motivated by this field. LÄS MER

  3. 2. Graph-based Methods for Interactive Image Segmentation

    Författare :Filip Malmberg; Ingela Nyström; Ewert Bengtsson; Jayaram K. Udupa; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Digital image analysis; Interactive image segmentation; Fuzzy image segmentation; Image foresting transform; Graph labeling; Graph cuts; Computerized Image Processing; Datoriserad bildbehandling;

    Sammanfattning : The subject of digital image analysis deals with extracting relevant information from image data, stored in digital form in a computer. A fundamental problem in image analysis is image segmentation, i.e., the identification and separation of relevant objects and structures in an image. LÄS MER

  4. 3. Best Trees Extraction and Contextual Grammars for Language Processing

    Författare :Anna Jonsson; Johanna Björklund; Frank Drewes; Hendrik Jan Hoogeboom; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Weighted tree automata; the N-best problem; efficient algorithms; semantic graph; abstract meaning representation; contextual graph grammars; hyperedge replacement; graph extensions;

    Sammanfattning : In natural language processing, the syntax of a sentence refers to the words used in the sentence, their grammatical role, and their order. Semantics concerns the concepts represented by the words in the sentence and their relations, i.e., the meaning of the sentence. LÄS MER

  5. 4. Towards Decentralized Graph Learning

    Författare :Lodovico Giaretta; Sarunas Girdzijauskas; Henrik Boström; Leila Bahri; Márk Jelasity; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Informations- och kommunikationsteknik; Information and Communication Technology;

    Sammanfattning : Current Machine Learning (ML) approaches typically present either a centralized or federated architecture. However, these architectures cannot easily keep up with some of the challenges introduced by recent trends, such as the growth in the number of IoT devices, increasing awareness about the privacy and security implications of extensive data collection, and the rise of graph-structured data and Graph Representation Learning. LÄS MER

  7. 5. Data-Centric AI for Software Performance Engineering - Predicting Workload Dependent and Independent Performance of Software Systems Using Machine Learning Based Approaches

    Författare :Hazem Samoaa; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Representation Learning; Software Performance Prediction; Machine Learning; Source code Representation; Graph Neural Network; Deep Learning; Data-Centric AI;

    Sammanfattning : Context: Machine learning (ML) approaches are widely employed in various software engineering (SE) tasks. Performance, however, is one of the most critical software quality requirements. Performance prediction is estimating the execution time of a software system prior to execution. LÄS MER