A method for automated temporal knowledge acquisition applied to sleep-related breathing disorders

  • Authors:
  • G. Guimarães;J. -H. Peter;T. Penzel;A. Ultsch

  • Affiliations:
  • Department of Computer Science and CENTRIA (Centre of AI), Universidade Nova de Lisboa, 2825-114 Caparica, Portugal;Department of Internal Medicine, Hospital of Philipps-Universität Marburg, 35033 Marburg, Germany;Department of Internal Medicine, Hospital of Philipps-Universität Marburg, 35033 Marburg, Germany;Department of Computer Science, Philipps-Universität Marburg, 35032 Marburg, Germany

  • Venue:
  • Artificial Intelligence in Medicine
  • Year:
  • 2001

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Abstract

This paper presents a method for the discovery of temporal patterns in multivariate time series and their conversion into a linguistic knowledge representation applied to sleep-related breathing disorders. The main idea lies in introducing several abstraction levels that allow a step-wise identification of temporal patterns. Self-organizing neural networks are used to discover elementary patterns in the time series. Machine learning (ML) algorithms use the results of the neural networks to automatically generate a rule-based description. At the next levels, temporal grammatical rules are inferred. This method covers one of the main ''bottlenecks'' in the design of knowledge-based systems, namely, the knowledge acquisition problem. An evaluation of the rules lead to an overall sensitivity of 0.762, and a specificity of 0.758.