Authors:
Elisabetta De Maria
1
;
Daniel Gaffé
2
;
Cédric Girard Riboulleau
3
and
Annie Ressouche
4
Affiliations:
1
Univ. Cote d’Azur, CNRS, I3S, France
;
2
Univ. Cote d’Azur, CNRS, LEAT, France
;
3
Univ. Cote d’Azur, INRIA SAM, France
;
4
INRIA SAM, France
Keyword(s):
Neural Spiking Networks, Probabilistic Models, Temporal Logic, Model Checking, Network Reduction.
Abstract:
In this paper we formalize Boolean Probabilistic Leaky Integrate and Fire Neural Networks as Discrete-Time Markov Chains using the language PRISM.
In our models, the probability for neurons to emit spikes is driven by the difference between their membrane potential and their firing threshold. The potential value of each neuron is computed taking into account both the current input signals and the past potential value. Taking advantage of this modeling, we propose a novel algorithm which aims at reducing the number of neurons and synaptical connections of a given
network. The reduction preserves the desired dynamical behavior of the network, which is formalized by means of temporal logic formulas and verified thanks to the PRISM model checker.