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Integrating Novel Class Detection with Classification for Concept-Drifting Data Streams

  • Mohammad M. Masud
  • Jing Gao
  • Latifur Khan
  • Jiawei Han
  • Bhavani Thuraisingham
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5782)

Abstract

In a typical data stream classification task, it is assumed that the total number of classes are fixed. This assumption may not be valid in a real streaming environment, where new classes may evolve. Traditional data stream classification techniques are not capable of recognizing novel class instances until the appearance of the novel class is manually identified, and labeled instances of that class are presented to the learning algorithm for training. The problem becomes more challenging in the presence of concept-drift, when the underlying data distribution changes over time. We propose a novel and efficient technique that can automatically detect the emergence of a novel class in the presence of concept-drift by quantifying cohesion among unlabeled test instances, and separation of the test instances from training instances. Our approach is non-parametric, meaning, it does not assume any underlying distributions of data. Comparison with the state-of-the-art stream classification techniques prove the superiority of our approach.

Keywords

Data Stream Leaf Node Test Instance Decision Boundary Ensemble Size 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Mohammad M. Masud
    • 1
  • Jing Gao
    • 2
  • Latifur Khan
    • 1
  • Jiawei Han
    • 2
  • Bhavani Thuraisingham
    • 1
  1. 1.University of TexasDallas
  2. 2.University of IllinoisUrbana Champaign

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