Create readme.txt

Author: lixilinx

LeNet5/readme.txt

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+Benchmarking the performance of the following methods on the MNIST dataset:
+
+Momentum
+Adam
+KFAC
+Fisher type preconditioner (square root version)
+Newton type preconditioner
+
+For each method, we train it with ten epochs, anneal its learning rate from lr to 0.01*lr, 
+and tune its hyperparameters to optimize its test classification error rate.