Browse Definitions :
Definition

restricted Boltzmann machine (RBM)

A restricted Boltzmann machine (RBM) is a type of artificial neural network (ANN) for machine learning of probability distributions. An artificial neural network is a system of hardware and/or software patterned after the operation of neurons in the human brain.

Created by Geoff Hinton, RBM algorithms are useful in defining dimensionality reduction, classification, regression, collaborative filtering, feature learning and topic modeling. Like perceptrons, they are a relatively simple type of neural network.

RBMs fall into the categories of Stochastic and generative models of artificial intelligence. Stochastic refers to anything based on probabilities and generative means that it uses AI to produce (generate) a desired output. Generative models contrast with discriminative models, which classify existing data.

Like all multi-layer neural networks, RBMs have layers of artificial neurons, in their case two. The first layer is the input layer. The second is a hidden layer that only accepts what the first layer passes on. The restriction spoken of in RBM is that the different neurons within the same layer can’t communicate with one another. Instead, neurons can only communicate with other layers. (In a standard Boltzmann machine, neurons in the hidden layer intercommunicate.) Each node within a layer performs its own calculations. After performing its calculations, the node then makes a stochastic decision about whether to pass on the on to the next layer.

Though RBM are still sometimes used, they have mostly been replaced by generative adversarial networks or vibrational auto-encoders.

This was last updated in June 2018

Continue Reading About restricted Boltzmann machine (RBM)

SearchCompliance
  • pure risk

    Pure risk refers to risks that are beyond human control and result in a loss or no loss with no possibility of financial gain.

  • risk reporting

    Risk reporting is a method of identifying risks tied to or potentially impacting an organization's business processes.

  • risk exposure

    Risk exposure is the quantified potential loss from business activities currently underway or planned.

SearchSecurity
  • script kiddie

    Script kiddie is a derogative term that computer hackers coined to refer to immature, but often just as dangerous, exploiters of ...

  • cipher

    In cryptography, a cipher is an algorithm for encrypting and decrypting data.

  • What is risk analysis?

    Risk analysis is the process of identifying and analyzing potential issues that could negatively impact key business initiatives ...

SearchHealthIT
SearchDisasterRecovery
  • What is risk mitigation?

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

  • fault-tolerant

    Fault-tolerant technology is a capability of a computer system, electronic system or network to deliver uninterrupted service, ...

  • synchronous replication

    Synchronous replication is the process of copying data over a storage area network, local area network or wide area network so ...

SearchStorage
  • gigabyte (GB)

    A gigabyte (GB) -- pronounced with two hard Gs -- is a unit of data storage capacity that is roughly equivalent to 1 billion ...

  • MRAM (magnetoresistive random access memory)

    MRAM (magnetoresistive random access memory) is a method of storing data bits using magnetic states instead of the electrical ...

  • storage volume

    A storage volume is an identifiable unit of data storage. It can be a removable hard disk, but it does not have to be a unit that...

Close