Knowledge Discovery from Complex High Dimensional Data

Sangkyun Lee, Andreas Holzinger

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


Modern data analysis is confronted by increasing dimensionality of problems, mainly contributed by higher resolutions available for data acquisition and by our use of larger models with more degrees of freedom to investigate complex systems deeper. High dimensionality constitutes one aspect of “big data”, which brings us not only computational but also statistical and perceptional challenges. Most data analysis problems are solved using techniques of optimization, where large-scale optimization requires faster algorithms and implementations. Computed solutions must be evaluated for statistical quality, since otherwise false discoveries can be made. Recent papers suggest to control and modify algorithms themselves for better statistical properties. Finally, human perception puts an inherent limit on our understanding to three dimensional spaces, making it almost impossible to grasp complex phenomena. For aid, we use dimensionality reduction or other techniques, but these usually do not capture relations between interesting objects. Here graph-based knowledge representation has lots of potential, for instance to create perceivable and interactive representations and to perform new types of analysis based on graph theory and network topology. In this
article, we show glimpses of new developments in these aspects.
Original languageEnglish
Title of host publicationSolving Large Scale Learning Tasks. Challenges and Algorithms
Subtitle of host publicationSpringer Lecture Notes in Artificial Intelligence LNAI 9580
EditorsStefan Michaelis, Nico Piatkowski, Marco Stolpe
Place of PublicationHeidelberg, Berlin, New York
PublisherSpringer International
Number of pages167
ISBN (Electronic)978-3-319-41706-6
ISBN (Print)978-3-319-41705-9
Publication statusPublished - 10 Jul 2016
EventWorkshop Machine Learning for Biomedicine at TU Graz - TU Graz, Graz, Austria
Duration: 26 Jan 201626 Jan 2016

Publication series

Name Lecture Notes in Computer Science book series
VolumeLNAI, volume 9580
ISSN (Electronic)0302-9743


ConferenceWorkshop Machine Learning for Biomedicine at TU Graz


  • Machine Learning
  • Health Informatics
  • Graph Learning
  • Graph-Based Data Mining

ASJC Scopus subject areas

  • Artificial Intelligence

Fields of Expertise

  • Information, Communication & Computing

Treatment code (Nähere Zuordnung)

  • Basic - Fundamental (Grundlagenforschung)


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