A Look-Ahead Simulation Algorithm for DBN Models of Biochemical Pathways

  • Sucheendra K. Palaniappan
  • Matthieu Pichené
  • Grégory Batt
  • Eric Fabre
  • Blaise Genest
Conference paper

DOI: 10.1007/978-3-319-47151-8_1

Part of the Lecture Notes in Computer Science book series (LNCS, volume 9957)
Cite this paper as:
Palaniappan S.K., Pichené M., Batt G., Fabre E., Genest B. (2016) A Look-Ahead Simulation Algorithm for DBN Models of Biochemical Pathways. In: Cinquemani E., Donzé A. (eds) Hybrid Systems Biology. HSB 2016. Lecture Notes in Computer Science, vol 9957. Springer, Cham

Abstract

Dynamic Bayesian Networks (DBNs) have been proposed [16] as an efficient abstraction formalism of biochemical models. They have been shown to approximate well the dynamics of biochemical models, while offering improved efficiency for their analysis [17, 18]. In this paper, we compare different representations and simulation schemes on these DBNs, testing their efficiency and accuracy as abstractions of biological pathways. When generating these DBNs, many configurations are never explored by the underlying dynamics of the biological systems. This can be used to obtain sparse representations to store and analyze DBNs in a compact way. On the other hand, when simulating these DBNs, singular configurations may be encountered, that is configurations from where no transition probability is defined. This makes simulation more complex. We initially evaluate two simple strategies for dealing with singularities: First, re-sampling simulations visiting singular configurations; second filling up uniformly these singular transition probabilities. We show that both these approaches are error prone. Next, we propose a new algorithm which samples only those configurations that avoid singularities by using a look-ahead strategy. Experiments show that this approach is the most accurate while having a reasonable run time.

Copyright information

© Springer International Publishing AG 2016

Authors and Affiliations

  • Sucheendra K. Palaniappan
    • 1
    • 2
  • Matthieu Pichené
    • 1
  • Grégory Batt
    • 2
  • Eric Fabre
    • 1
  • Blaise Genest
    • 3
  1. 1.Inria, Campus de BeaulieuRennesFrance
  2. 2.Inria Saclay - Ile de FrancePalaiseauFrance
  3. 3.CNRS, IRISARennesFrance

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