コード例 #1
0
ファイル: neuron_layer.py プロジェクト: ageek/kaggle
    def __init__(self, dim1, dim2):
        """Constructor

        @param dim1 -- number of neurons in each row layer.
        @param dim2 -- number of neurons in each column of the layer.

        """
        self.activations = cp.get_filled_matrix(dim1, dim2, 0.0)
        self.deltas = cp.get_filled_matrix(dim1, dim2, 0.0)
コード例 #2
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ファイル: neuron_layer.py プロジェクト: stjordanis/CUV
    def __init__(self, dim1, dim2):
        """Constructor

        @param dim1 -- number of neurons in each row layer.
        @param dim2 -- number of neurons in each column of the layer.

        """
        self.activations = cp.get_filled_matrix(dim1, dim2, 0.0)
        self.deltas = cp.get_filled_matrix(dim1, dim2, 0.0)
コード例 #3
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    def __init__(self, source_layer, target_layer):
        """Constructor

        @param source_layer pointer to the previous neuron layer.
        @param target_layer pointer to the next neuron layer.

        """
        self.source=source_layer
        self.target=target_layer
        dim1 = self.target.activations.h
        dim2 = self.source.activations.h
        self.weight = cp.get_filled_matrix(dim1, dim2, 0.0)
        cp.fill_rnd_uniform(self.weight)
        cp.apply_scalar_functor(self.weight, cp.scalar_functor.SUBTRACT, 0.5)
        cp.apply_scalar_functor(self.weight, cp.scalar_functor.DIV, 10)
        self.bias = cp.get_filled_matrix(dim1, 1, 0)
コード例 #4
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    def weight_update(self, learnrate=0.01, decay=0.0):
        """Updates the weights and the bias
           using source activations and target deltas.

           @param learnrate  how strongly the gradient influences the weights
           @param decay      large values result in a regularization with
                             to the squared weight value"""
				batch_size=self.source.activations.w
				h = cp.dev_matrix_cmf(self.weight.h, self.weight.w)
				cp.prod(h, self.target.deltas, self.source.activations, 'n', 't')
				cp.learn_step_weight_decay(self.weight, h, learnrate/batch_size, decay)
				h.dealloc()
				h = cp.get_filled_matrix(self.target.activations.h, 1, 0)
				cp.reduce_to_col(h.vec, self.target.deltas)
				cp.learn_step_weight_decay(self.bias, h, learnrate/batch_size, decay)
				h.dealloc()
コード例 #5
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    def __init__(self, source_layer, target_layer):
        """Constructor

        @param source_layer reference to previous neuron layer.
        @param target_layer reference to next neuron layer.
        """

        self.source = source_layer
        self.target = target_layer
        dim1 = self.target.activations.shape[0]
        dim2 = self.source.activations.shape[0]
        self.weight = cp.get_filled_matrix(dim1, dim2, 0.0)
        cp.fill_rnd_uniform(self.weight)
        self.weight -= 0.5
        self.weight /= 10.0
        self.bias = cp.dev_tensor_float(dim1)
        cp.fill(self.bias, 0)