23 lines
641 B
Python
23 lines
641 B
Python
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from nnfs.datasets import spiral_data
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import numpy as np
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import nnfs
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import matplotlib.pyplot as plt
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#sets random seed to zero, float 32 dtype default, overrides original dot product from numpy
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nnfs.init()
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class Layer_Dense:
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#layer initialization
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def __init__(self, n_inputs, n_neurons):
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#random initialization of weights and biases
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self.weights = 0.01 * np.random.randn(n_inputs, n_neurons)
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self.biases = np.zeros((1, n_neurons))
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#forward pass
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def forward(self, inputs):
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#calculate outputs from inputs weights and biases
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self.output = np.dot(inputs, self.weights) + self.biases
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