... particularly sure what final outcome is being sought. Neural networks are often employed in data mining do to the ability for neural networks to be trained. Neural networks can also be used ... operator. Yet neural networks have a long way to go. Neural Networks Today Neural networks are in use today for a wide variety of tasks. Most people think of neural networks attempting to emulate ... Understanding Neural Networks Article Title: Chapter 2: Understanding Neural Networks Category: Artificial Intelligence Most Popular From Series: Programming Neural Networks in Java Posted:...
Ngày tải lên: 14/02/2014, 20:20
... 1 Usin g Neural Networks in HYSYS Using Neural Networks in HYSYS © 2004 AspenTech. All Rights Reserved. Using Neural Networks in HYSYS.pdf 4 Usin g Neural Networks in HYSYS ... is included to check the quality of the Neural Network calculations. 9 Usin g Neural Networks in HYSYS Training the Neural Network The next step is to train the Neural Network using ... include large errors. Neural Networks will not predict the effect of changes in variables not included in the training data. 12 Usin g Neural Networks in HYSYS Exercise Using the Parametric...
Ngày tải lên: 23/03/2014, 02:20
comparing neural networks in neuroph, encog and joone - codeproject
... take considerably more training iterations. We begin by creating a training set. TrainingSet trainingSet = new TrainingSet(2, 1); trainingSet.addElement(new SupervisedTrainingElement (new double[]{0, ... DynamicBackPropagation(); train.setNeuralNetwork(network); network.setLearningRule(train); We now begin to loop through training iterations, until we are trained to below 1%. int epoch = 1; do { train.doOneLearningIteration(trainingSet); ... the trained network’s results. System.out.println(" ;Neural Network Results:"); for(TrainingElement element : trainingSet.trainingElements()) { network.setInput(element.getInput()); ...
Ngày tải lên: 28/04/2014, 10:10
neural networks in finance gaining predictive edge in the market [mcnelis p d ]
... the International Joint Conference on Neural Networks (IJCNN) meetings in Washington, DC, in 2001, and in Honolulu and Singapore in 2002. These meetings were eye-openers for anyone trained in ... polynomal. Neural Networks in Finance: Gaining Predictive Edge in the Market 8 1. Introduction The financial sectors of emerging markets, in particular, but also in markets with a great deal of innovation ... forms in the neural network literature. 2.4.2 Squasher Functions The neurons process the input data in two ways: first by forming lin- ear combinations of the input data and then by “squashing”...
Ngày tải lên: 08/05/2014, 10:01
Elsevier, Neural Networks In Finance 2005_1 pdf
... Joint Conference on Neural Networks (IJCNN) meetings in Washington, DC, in 2001, and in Honolulu and Singapore in 2002. These meetings were eye-openers for anyone trained in classical statistics ... by selecting “Customer Support” and then “Obtaining Permissions.” Library of Congress Cataloging -in- Publication Data McNelis, Paul D. Neural networks in finance : gaining predictive edge in the ... Nonlinear Principal Components: Intrinsic Dimensionality 41 2.6.1 Linear Principal Components 42 2.6.2 Nonlinear Principal Components 44 2.6.3 Application to Asset Pricing 46 2.7 Neural Networks...
Ngày tải lên: 20/06/2014, 19:20
Elsevier, Neural Networks In Finance 2005_2 doc
... forms in the neural network literature. 2.4.2 Squasher Functions The neurons process the input data in two ways: first by forming lin- ear combinations of the input data and then by “squashing” ... form of learning behavior. Often used to characterize learning by doing, the func- tion becomes increasingly steep until some in ection point. Thereafter the function becomes increasingly flat and ... weighting or combining signals from many neurons, perhaps in many hidden layers. A commonly used application of this type of network is in pattern recog- nition in neural linguistics, in which...
Ngày tải lên: 20/06/2014, 19:20
Elsevier, Neural Networks In Finance 2005_3 pptx
... −min(x k ) (3.13) The linear scaling function for [−1, 1], transforming a variable x k into x ∗∗ k , has the following form: x ∗∗ k,t =2· x k,t − min(x k ) max(x k ) −min(x k ) − 1 (3.14) A nonlinear scaling method ... network link the input variables x to the encoding neurons C11 and C12, and to the nonlinear principal components. The parameters also link the nonlinear principal components to the decoding neurons ... evaluating the success of a nonlinear regression. 44 2. What Are Neural Networks? x1 x2 x3 x4 Inputs x2 x4 x1 x3 Inputs c11 c22 c21 c12 H-Units FIGURE 2.12. Neural principal components 2.6.2 Nonlinear...
Ngày tải lên: 20/06/2014, 19:20
Báo cáo sinh học: " Research Article Automatic Modulation Recognition Using Wavelet Transform and Neural Networks in Wireless Systems" ppt
Ngày tải lên: 21/06/2014, 16:20
Báo cáo hóa học: " Audio Watermarking Based on HAS and Neural Networks in DCT Domain" doc
Ngày tải lên: 23/06/2014, 01:20
Estimation of Proper Strain Rate in the CRSC Test Using a Artificial Neural Networks
... for use in training and testing the neural network. A large training data reduces the risk of under-sampling the nonlinear function, but increases the training time. To improve training, preprocessing ... minmax min VV VV A − − = (4) Training was performed iteratively until the average of sum squared error over all the training patterns was minimized. Experiment were carried out using ... as shown in Fig.1. The implementation of the back- propagation neural network model for predicting proper strain rate involved three phases First, data collection phase involved gathering the...
Ngày tải lên: 22/03/2013, 15:01
Tài liệu Neural Networks and Neural-Fuzzy Approaches in an In-Process Surface Roughness Recognition System for End Milling Operations pptx
... before or during machining. The primary objective was to train the fuzzy system by generating fuzzy rules from input–output pairs, and combining these generated and linguistic rules into a common ... inspecting machined surfaces at fixed intervals. A surface profilometer containing a contact stylus is used in the manual inspection procedure. This procedure is both time-consuming and labor-intensive. ... laboratories in the state of Iowa (including Winnebago Co. in Forest City; Delavan Inc. in Des Moines; Sauer-Sundstrand Inc. in Ames), point to the feasibility of in- process surface roughness recognition...
Ngày tải lên: 23/01/2014, 01:20
Tài liệu Báo cáo Y học: Prediction of protein–protein interaction sites in heterocomplexes with neural networks ppt
... (http://trantor.bioc.columbia.edu/cgi-bin/SPIN/), which contains all the protein complexes contained in the PDB Protein Data Bank. Using the SPIN search engine, it is possible to search the se t of protein complexes for ... s ame as including the residue conservation in the contact surface in the protein family. The scoring efficiency of the best performing neural network in t he testing phase is shown in Table 1. ... protein–protein interaction; protein surface; neural network; evolutionary information. In the Ôpost-genomeÕ era, a shift of emphasis is taking place towards making genomics functional [1,2]. In...
Ngày tải lên: 21/02/2014, 15:20
Artificial Neural Networks - a Useful Tool in Air Pollution and Meteorological Modelling pdf
... should be divided into several sets (training, testing, production, on-line, remaining). The training set is used to adjust the interconnection weights of the MPNN model. The testing set is used ... feedforward networks. Neural Networks 4, pp. 251-257 Kohonen, T. (1995). Self-organizing maps. Springer, Berlin Kurkova, V. (1992). Kolmogorov’s Theorem and Multilayer Neural Networks, Neural Networks, ... stuck in a local minimum far from the global one. During the learning process, the network should be periodically tested on the testing set (not included in the training set) www.intechopen.com ...
Ngày tải lên: 29/03/2014, 21:20
programming neural networks with encog 2 in java
... training algorithms. Supervised training is not the only training option. Chapter 9, “Unsupervised Training Methods” shows how to use unsupervised training with Encog. Unsupervised training ... Training Training Set XOR Operator 48 Programming Neural Networks with Encog 2 in Java Some NeuralLogic classes require specific layer types. For the NeuralLogic classes to find ... the given input. Neural network programming involves first defining the input and output layer neuron counts. Once you have defined how to translate the programming problem into the input and...
Ngày tải lên: 29/04/2014, 14:54
Báo cáo toán học: " Biperiodicity in neutral-type delayed difference neural networks" ppt
Ngày tải lên: 20/06/2014, 20:20