Joint sparse regularization based Sparse Semi-Supervised Extreme Learning Machine (S3ELM) for classification

Xiaozhuo Luo, F. Liu, Shuyuan Yang, Xiaodong Wang, Zhiguo Zhou

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


Extreme Learning Machine (ELM) has received increasing attention for its simple principle, low computational cost and excellent performance. However, a large number of labeled instances are often required, and the number of hidden nodes should be manually tuned, for better learning and generalization of ELM. In this paper, we propose a Sparse Semi-Supervised Extreme Learning Machine (S3ELM) via joint sparse regularization for classification, which can automatically prune the model structure via joint sparse regularization technology, to achieve more accurate, efficient and robust classification, when only a small number of labeled training samples are available. Different with most of greedy-algorithms based model selection approaches, by using ℓ2,1-norm, S3ELM casts a joint sparse constraints on the training model of ELM and formulate a convex programming. Moreover, with a Laplacian, S3ELM can make full use of the information from both the labeled and unlabeled samples. Some experiments are taken on several benchmark datasets, and the results show that S3ELM is computationally attractive and outperforms its counterparts.

Original languageEnglish (US)
Pages (from-to)149-160
Number of pages12
JournalKnowledge-Based Systems
StatePublished - Jan 1 2015


  • Extreme learning machine
  • Joint sparse regularization
  • Laplacian
  • Sparse semi-supervised learning
  • ℓ -Norm

ASJC Scopus subject areas

  • Management Information Systems
  • Software
  • Information Systems and Management
  • Artificial Intelligence


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