image-recognizer/ui/front_page/plots/gradients.py

from abc import ABC

from matplotlib.figure import Figure

from neural_net.epoch import Epoch
from neural_net.neural_net import NeuralNet
from ui.components.plot_figure import PlotFrame
from ui.plotters.plotter import Plotter

class GradientsPlot(PlotFrame):
    def __init__(self, parent, neural_net: NeuralNet):
        super().__init__(parent)
        self.plotter = GradientsPlotter(self.figure, neural_net)

class GradientsPlotter(Plotter, ABC):
    def __init__(self, figure: Figure, neural_net: NeuralNet):
        super().__init__(figure)
        self.neural_net = neural_net
        self.axes = figure.subplots(1, 2)

    def reset_plot(self):
        self.axes[0].clear()
        self.axes[0].set_xlabel('Neuron Index')
        self.axes[0].set_ylabel('Input Index')
        self.axes[1].clear()
        self.axes[1].set_xlabel('Output Neuron Index')
        self.axes[1].set_ylabel('Hidden Neuron Index')

    def plot(self, data: Epoch):
        gradients_layer1 = data.layer_dl_gradients[1][-1]
        self.axes[0].imshow(gradients_layer1, cmap='coolwarm', aspect='auto')

        gradients_layer2 = data.layer_dl_gradients[0][-1]
        self.axes[1].imshow(gradients_layer2, cmap='coolwarm', aspect='auto')

    def plot_gradients_histogram(self, current_epoch: Epoch):
        gradients_layer1 = current_epoch.layer_dl_gradients[1][-1]
        self.axes[0].hist(gradients_layer1.flatten(), bins=50, color='blue', alpha=0.7)

        gradients_layer2 = current_epoch.layer_dl_gradients[0][-1]
        self.axes[1].hist(gradients_layer2.flatten(), bins=50, color='green', alpha=0.7)