Encyclopedia of Computational Neuroscience

Living Edition
| Editors: Dieter Jaeger, Ranu Jung

Boltzmann Machine

Living reference work entry
DOI: https://doi.org/10.1007/978-1-4614-7320-6_676-1

Synonyms

Definition

Boltzmann machines are usually defined as neural networks in which the input–output relationship is stochastic instead of deterministic (as it is in the original Hopfield network). Then, Boltzmann machines are normally defined as stochastic versions of the Hopfield model or other attractor neural networks. A main difference between Hopfield networks and Boltzmann machines is that whereas in Hopfield networks, the deterministic dynamics brings the state of the system downhill, toward the stable minima of some energy function related with some information content, in a Boltzmann machine, such prescribedstates of the system cannot be reached due to stochastic fluctuations. For a Boltzmann machine, then, the steady state of the system is characterized by an equilibrium probability distribution to be in such states, which is given as a function of the energy of such states by the Boltzmann distribution. The inherent...

Keywords

Global State Hide Unit Restrict Boltzmann Machine Boltzmann Machine Glauber Dynamic 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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References

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  5. van Kampen NG (1990) Stochastic processes in physics and chemistry. North-Holland, AmsterdamGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Institute “Carlos I” for Theoretical and Computational Physics and Department of Electromagnetism and Matter Physics, Facultad de CienciasUniversidad de GranadaGranadaSpain