An Information Theoretic Approach of Designing Sparse Kernel Adaptive Filters

  • Authors:
  • Weifeng Liu;Il Park;J. C. Principe

  • Affiliations:
  • Forecasting Team, Amazon.com, Seattle, WA, USA;-;-

  • Venue:
  • IEEE Transactions on Neural Networks
  • Year:
  • 2009

Quantified Score

Hi-index 0.01

Visualization

Abstract

This paper discusses an information theoretic approach of designing sparse kernel adaptive filters. To determine useful data to be learned and remove redundant ones, a subjective information measure called surprise is introduced. Surprise captures the amount of information a datum contains which is transferable to a learning system. Based on this concept, we propose a systematic sparsification scheme, which can drastically reduce the time and space complexity without harming the performance of kernel adaptive filters. Nonlinear regression, short term chaotic time-series prediction, and long term time-series forecasting examples are presented.