Completion of biological networks: the output kernel trees approach

Pierre Geurts (1) , Nizar Touleimat (1) , Marie Dutreix (2) , Florence d'Alché-Buc (1)

1 IBISC - Informatique, Biologie Intégrative et Systèmes Complexes
2 Conception synthèse et étude d'antitumoraux

The inference of biological networks from various sources of experimental data is an important problem of computational biology. In this paper, we propose a new method for the supervised inference of biological networks, which is based on a kernelization of the output of regression trees. It inherits several features of this method such as interpretability, robustness to irrelevant variables, and input scalability. We applied this method on the inference of a protein-protein interaction network where we obtained results competitive with existing approaches. Furthermore, our method provides relevant insights on input data regarding their potential relationship with the existence of interactions.

Domaines: Informatique; Bio-informatique [q-bio.QM]; Bio-Informatique, Biologie Systémique [q-bio.QM]; Modélisation et simulation; Apprentissage [cs.LG]; Base de données [cs.DB]

Pierre Geurts, Nizar Touleimat, Marie Dutreix, Florence d'Alché-Buc. Completion of biological networks: the output kernel trees approach. Proc. of the Workshop on Probabilistic Modeling and Machine Learning in Structural and Systems Biology, 2006, Finland. pp.Elec. Proc. ⟨hal-00341943⟩