Data management support via spectrum perturbation-based subspace classification in collaborative environments

Chao Chen, Mei Ling Shyu, Shu Ching Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Data management support to enable effective and efficient information sharing in collaborative environments is critical, especially in semantics based search and retrieval. In this paper, a novel spectrum perturbation-based subspace classification is proposed to mine semantics and other useful information from a large-scale dataset by utilizing a lower-dimensional subspace to discriminate different classes of the dataset. Among the existing subspace-based approaches, the principal component (PC) subspace is the most prevailing one and has been well studied. After investigating previous work related to PC subspace, we found that none of them had considered the perturbation on spectrum when building the subspace learning models. However, such perturbation is of certain importance and is able to provide discriminant information that helps improve classification performance by measuring the closeness of each testing data instance towards a subspace model by a closeness score based on the spectrum perturbation. Each testing data instance is assigned to its closest class by searching the smallest closeness score. Experiments are conducted to evaluate our proposed subspace classifier using data sets from three different sources, and the experimental results show that it achieves promising results and outperforms comparative subspace classifiers as well as some other commonly used classifiers.

Original languageEnglish (US)
Title of host publicationColiaborateCom 2011 - Proceedings of the 7th International Conference on Collaborative Computing
Subtitle of host publicationNetworking, Applications and Worksharing
Pages67-76
Number of pages10
DOIs
StatePublished - Dec 1 2011
Event7th International Conference on Collaborative Computing: Networking, Applications and Worksharing, ColiaborateCom 2011 - Orlando, FL, United States
Duration: Oct 15 2011Oct 18 2011

Publication series

NameColiaborateCom 2011 - Proceedings of the 7th International Conference on Collaborative Computing: Networking, Applications and Worksharing

Other

Other7th International Conference on Collaborative Computing: Networking, Applications and Worksharing, ColiaborateCom 2011
CountryUnited States
CityOrlando, FL
Period10/15/1110/18/11

Keywords

  • classification
  • closeness score
  • Collaborative environment
  • Principal component (PC) subspace
  • spectrum perturbation

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications

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    Chen, C., Shyu, M. L., & Chen, S. C. (2011). Data management support via spectrum perturbation-based subspace classification in collaborative environments. In ColiaborateCom 2011 - Proceedings of the 7th International Conference on Collaborative Computing: Networking, Applications and Worksharing (pp. 67-76). [6144790] (ColiaborateCom 2011 - Proceedings of the 7th International Conference on Collaborative Computing: Networking, Applications and Worksharing). https://doi.org/10.4108/icst.collaboratecom.2011.247202