Metabolic p system flux regulation by artificial neural networks

  • Authors:
  • Alberto Castellini;Vincenzo Manca;Yasuhiro Suzuki

  • Affiliations:
  • Dept. of Computer Science, Verona University, Verona, Italy;Dept. of Computer Science, Verona University, Verona, Italy;Dept. of Complex Systems Science, Nagoya University, Nagoya, Japan

  • Venue:
  • WMC'09 Proceedings of the 10th international conference on Membrane Computing
  • Year:
  • 2009

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Abstract

Metabolic P systems are an extension of P systems employed for modeling biochemical systems in a discrete and deterministic perspective. The generation of MP models from observed data of biochemical system dynamics is a hard problem which requires to solve several subproblems. Among them, flux tuners discovery aims to identify substances and parameters involved in tuning each reaction flux. In this paper we propose a new technique for discovering flux tuners by means of neural networks. This methodology, based on backpropagation with weight elimination for neural network training and on an heuristic algorithm for computing tuning indexes, has achieved encouraging results in a synthetic case study.