Tin-bismuth alloy performance prediction method based on transfer learning
A tin-bismuth alloy and performance prediction technology, which is applied in the field of tin-bismuth alloy performance prediction and modeling, can solve problems such as difficulty in training machine learning models, and achieve the effect of improving the prediction rate
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[0044] Embodiment 1: The performance prediction method of this tin-bismuth alloy based on transfer learning is as follows:
[0045] 1. Build a deep belief network
[0046] Use python language and build DBN based on tensorflow framework, see figure 1 ;
[0047] (1) Load the deep belief network library
[0048] Import the following packages in the programming code: urllib, math, tensorflow, numpy, utils, PIL;
[0049] (2) Initialize a DeepBeliefNetwork object, and pass in parameters including pretrain, rbm_layers, rbm_learning_rate;
[0050] (3) Initialize n RBM objects in the DeepBeliefNetwork object, where dbn.sizes=[100 100] is set;
[0051] Among them, in DBN, the probability distribution of system random variables, that is, the energy relationship corresponding to the objective function is
[0052]
[0053] W ij is the connection weight from visible layer neuron i to hidden layer neuron j, b j is the bias of the jth neuron in the visible layer, c i is the bias of t...
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