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DADiSP / NeuralNets

Neural Network Module


NeuralNet Design Dialog Example
Neural networks are able to recognize underlying patterns and predict outcomes based on incomplete or inconsistent information. In contrast to expert systems, which use a static set of rules, neural networks are able to learn and adapt to changes in the environment. With DADiSP/NeuralNet, users can build their own artificial neural networks (ANNs) and apply them to achieve more accurate predictions and pattern classifications.

Neural Network Training


Neural networks resemble the human brain because they can learn. A back-propagation neural network develops its predictive DADiSP/NeuralNet capabilities by being trained on a set of historical inputs and known resulting outputs. The neural net applies random weights to each designated input variable. It then adjusts the weights depending on how closely the actual output values match the desired output values in the training set of historical data. Once the appropriate variable weights have been set that minimize the difference between expected and actual output from the neural net, the neural net can then be applied to new data for classification.

Back-propagation Learning Algorithm


DADiSP/NeuralNet employs the back-propagation learning algorithm. Back-propagation has become the most widely used neural network paradigm for modeling, forecasting, and classification. To minimize the error in the network, DADiSP/NeuralNet uses a rapid-descent algorithm derived from the Vogl method of locating the global minimum. Since results depend on the initial conditions, the neural net module allows you to train a lot of neural networks on the same data with different initial configurations and pick the best one. NeuralNet Apply Weights Dialog Example

Powerful Preprocessing Functions


Preprocessing of the data is one of the largest problems in using neural network tools. DADiSP/NeuralNet is fully integrated with DADiSP, so hundreds of analysis functions are available to pre- and post-process neural network data. DADiSP has mathematical and statistical functions to scale, filter, and process the data to identify features to be learned by the neural network. A typical Worksheet will contain the preprocessing steps, the neural network and the output results. Simply change the input data or initial conditions and each dependent Window is automatically recalculated. You immediately see the effects of your changes on the neural network.

Requirements


DADiSP/NeuralNet requires DADiSP 6.0 B18 or higher. Contact us for information about updating your current version of DADiSP.



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