A soft real-time web news classification system with double control loops

  • Authors:
  • Huayong Wang;Yu Chen;Yiqi Dai

  • Affiliations:
  • Department of Computer Science and Technology, Tsinghua University, Beijing, P.R.China;Department of Computer Science and Technology, Tsinghua University, Beijing, P.R.China;Department of Computer Science and Technology, Tsinghua University, Beijing, P.R.China

  • Venue:
  • WAIM'05 Proceedings of the 6th international conference on Advances in Web-Age Information Management
  • Year:
  • 2005

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Abstract

This paper proposes a framework for soft real-time text classification system, which use control theory as a scientific underpinning, rather than ad hoc solutions. In order to provide real-time guarantee, two control loops are adopted. The feed forward control loop estimates the suitable number of classifiers according to the current workload, while the feedback control loop provides fine-grained control to the number of classifiers that perform imprecise computation. The soft real-time classification system can accommodate to the change of workload and transitional overload. The theory analysis and experiments result further prove its effectiveness: the variation range of the average response time is kept within ± 3% of the desired value; the computational resource is dynamically reallocated and reclaimed.