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feat: worked on py model
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1848
TWM_KerasIntro.ipynb
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TWM_KerasIntro.ipynb
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TWM_KerasIntro.py
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TWM_KerasIntro.py
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# # CIFAR-10
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# ## Ładowanie zbioru danych
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# In[ ]:
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import sys
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import tensorflow as tf
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# Check if GPU is available
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print(tf.config.list_physical_devices('GPU'))
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if tf.config.list_physical_devices('GPU'):
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print("GPU is available")
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else:
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print("GPU is not available")
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sys.exit()
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from tensorflow import keras
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from keras.datasets import cifar10
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from keras.utils import to_categorical
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import numpy as np
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import itertools
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import matplotlib.pyplot as plt
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from keras.models import Sequential
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from sklearn.metrics import confusion_matrix
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from tensorflow.keras.preprocessing.image import ImageDataGenerator
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from keras.layers import BatchNormalization, Conv2D, MaxPooling2D, ZeroPadding2D, GlobalAveragePooling2D, Flatten, Dense, Dropout, Activation
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from tensorflow.keras.optimizers import Adam
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def plot_confusion_matrix(cm, classes,
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normalize=False,
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title='Confusion matrix',
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cmap=plt.cm.Blues):
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"""
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This function prints and plots the confusion matrix.
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Normalization can be applied by setting `normalize=True`.
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"""
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if normalize:
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cm = cm.astype('float') / cm.sum(axis=1)[:, np.newaxis]
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print("Normalized confusion matrix")
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else:
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print('Confusion matrix, without normalization')
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print(cm)
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plt.imshow(cm, interpolation='nearest', cmap=cmap)
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plt.title(title)
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plt.colorbar()
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tick_marks = np.arange(len(classes))
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plt.xticks(tick_marks, classes, rotation=45)
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plt.yticks(tick_marks, classes)
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fmt = '.2f' if normalize else 'd'
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thresh = cm.max() / 2.
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for i, j in itertools.product(range(cm.shape[0]), range(cm.shape[1])):
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plt.text(j, i, format(cm[i, j], fmt),
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horizontalalignment="center",
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color="white" if cm[i, j] > thresh else "black")
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plt.ylabel('True label')
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plt.xlabel('Predicted label')
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plt.tight_layout()
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(X_train, y_train), (X_test, y_test) = cifar10.load_data()
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X_train = X_train.astype('float32') # change integers to 32-bit floating point numbers
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X_test = X_test.astype('float32')
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X_train /= 255 # normalize each value for each pixel for the entire vector for each input
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X_test /= 255
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y_train = y_train.reshape((1,-1))[0]
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y_test = y_test.reshape((1,-1))[0]
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print("Training matrix shape", X_train.shape, y_train.shape)
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print("Testing matrix shape", X_test.shape, y_test.shape)
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# one-hot format classes
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nb_classes = 10
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Y_train = to_categorical(y_train, nb_classes)
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Y_test = to_categorical(y_test, nb_classes)
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cifar_names = ['airplane', 'automobile', 'bird', 'cat', 'deer', 'dog', 'frog', 'horse', 'ship', 'truck']
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# ## Podgląd zbioru treningowego
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# In[ ]:
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for i in range(0, 10):
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img_batch = X_train[y_train == i][0:10]
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img_batch = np.reshape(img_batch, (img_batch.shape[0]*img_batch.shape[1], img_batch.shape[2], img_batch.shape[3]))
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if i > 0:
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img = np.concatenate([img, img_batch], axis = 1)
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else:
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img = img_batch
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plt.figure(figsize=(10,20))
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plt.axis('off')
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plt.imshow(img, cmap='gray')
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# ## Przygotowanie modelu
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# In[ ]:
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def generate_model():
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model = Sequential() # Linear stacking of layers
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# Convolution Layer 1
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model.add(Conv2D(16, (3, 3), input_shape=(32,32,3)))
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model.add(Activation('relu') )
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# ...
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model.add(Flatten()) # Flatten final output matrix into a vector
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# ...
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# Fully Connected Layer
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model.add(Dense(10)) # final 10 FC nodes
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model.add(Activation('softmax')) # softmax activation
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model.summary()
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adam = tf.optimizers.Adam(learning_rate=0.001)
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model.compile(loss='categorical_crossentropy', optimizer=adam, metrics=['accuracy'])
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return model
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def generate_model_default():
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model = Sequential() # Linear stacking of layers
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# Convolution Layer 1
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model.add(Conv2D(16, (3, 3), input_shape=(32,32,3)))
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model.add(Activation('relu') )
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# ...
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model.add(Flatten()) # Flatten final output matrix into a vector
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# ...
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# Fully Connected Layer
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model.add(Dense(10)) # final 10 FC nodes
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model.add(Activation('softmax')) # softmax activation
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model.summary()
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adam = tf.optimizers.Adam(learning_rate=0.001)
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model.compile(loss='categorical_crossentropy', optimizer=adam, metrics=['accuracy'])
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return model
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def generate_model_gemini():
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model = Sequential()
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# Convolutional Layers with Max Pooling
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model.add(Conv2D(32, (3, 3), activation='relu', input_shape=(32, 32, 3)))
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model.add(MaxPooling2D(pool_size=(2, 2)))
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model.add(Conv2D(64, (3, 3), activation='relu'))
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model.add(MaxPooling2D(pool_size=(2, 2)))
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model.add(Dropout(0.25)) # Regularization
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# Flatten and Fully Connected Layers
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model.add(Flatten())
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model.add(Dense(128, activation='relu'))
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model.add(Dropout(0.5)) # Regularization
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model.add(Dense(10, activation='softmax'))
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# Model Compilation
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model.compile(loss='categorical_crossentropy',
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optimizer='adam', # Consider trying other optimizers
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metrics=['accuracy'])
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return model
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def generate_model_chat():
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model = Sequential() # Linear stacking of layers
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# Convolution Layer 1
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model.add(Conv2D(32, (3, 3), padding='same', input_shape=(32, 32, 3)))
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model.add(Activation('relu'))
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model.add(BatchNormalization())
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# Convolution Layer 2
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model.add(Conv2D(32, (3, 3)))
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model.add(Activation('relu'))
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model.add(MaxPooling2D(pool_size=(2, 2)))
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model.add(Dropout(0.3))
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# Convolution Layer 3
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model.add(Conv2D(64, (3, 3), padding='same'))
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model.add(Activation('relu'))
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model.add(BatchNormalization())
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# Convolution Layer 4
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model.add(Conv2D(64, (3, 3)))
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model.add(Activation('relu'))
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model.add(MaxPooling2D(pool_size=(2, 2)))
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model.add(Dropout(0.3))
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# Flattening the convolutions
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model.add(Flatten())
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# Fully Connected Layer
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model.add(Dense(512)) # Large fully connected layer
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model.add(Activation('relu'))
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model.add(BatchNormalization())
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model.add(Dropout(0.6))
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# Output Layer
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model.add(Dense(10)) # final 10 FC nodes
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model.add(Activation('softmax')) # softmax activation
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model.summary()
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# Compile the model
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adam = Adam(learning_rate=0.001)
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model.compile(loss='categorical_crossentropy', optimizer=adam, metrics=['accuracy'])
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return model
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# In[ ]:
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model = generate_model()
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model_default = generate_model_default()
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model_gemini = generate_model_gemini()
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model_chat = generate_model_chat()
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models = [model_chat]
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# ## Trening
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# In[ ]:
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gen = ImageDataGenerator(rotation_range=8, width_shift_range=0.08, shear_range=0.3,
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height_shift_range=0.08, zoom_range=0.08, validation_split=0.2)
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train_generator = gen.flow(X_train, Y_train, batch_size=128, subset='training')
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valid_generator = gen.flow(X_train, Y_train, batch_size=128, subset='validation')
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# In[ ]:
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# Max 20 epoch
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for model in models:
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model.fit(train_generator, steps_per_epoch=40000//128, epochs=20, verbose=1, validation_data=valid_generator, validation_steps = 10000 // 128)
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# ## Test
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# In[ ]:
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for model in models:
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score = model.evaluate(X_test, Y_test)
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print('Test score:', score[0])
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print('Test accuracy:', score[1])
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# The predict_classes function outputs the highest probability class
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# according to the trained classifier for each input example.
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predicted = model.predict(X_test)
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predicted_classes = np.argmax(predicted, axis=1)
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# Check which items we got right / wrong
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correct_indices = np.nonzero(predicted_classes == y_test)[0]
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incorrect_indices = np.nonzero(predicted_classes != y_test)[0]
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cnf_matrix = confusion_matrix(y_test, predicted_classes)
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class_names = [str(i) for i in range(10)]
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# Plot non-normalized confusion matrix
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plt.figure()
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plot_confusion_matrix(cnf_matrix, classes=class_names,
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title='Confusion matrix, without normalization')
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plt.show()
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# In[ ]:
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def show_samples_rgb(indices, preds, images, labels, count=3, names = []):
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plt.figure()
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for i, sample in enumerate(indices[:count**2]):
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pred_id = int(np.argmax(preds[sample]))
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real_id = int(labels[sample])
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pred_score = preds[sample][pred_id]
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real_score = preds[sample][real_id]
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plt.subplot(count,count,i+1)
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plt.imshow(images[sample], interpolation='none')
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plt.axis('off')
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if len(names) > 0:
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plt.title("P: {} ({:.2f})\nE: {} ({:.2f})".format(names[pred_id], pred_score, names[real_id], real_score))
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else:
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plt.title("P: {} ({:.2f})\nE: {} ({:.2f})".format(pred_id, pred_score, real_id, real_score))
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plt.tight_layout()
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# ## Poprawne klasyfikacje
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# In[ ]:
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show_samples_rgb(correct_indices, predicted, X_test, y_test, 5, cifar_names)
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# ## Błędne klasyfikacje
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# In[ ]:
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show_samples_rgb(incorrect_indices, predicted, X_test, y_test, 5, cifar_names)
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19
twm.py
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19
twm.py
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import tensorflow as tf
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import numpy as np # advanced math library
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import matplotlib.pyplot as plt # MATLAB like plotting routines
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import random # for generating random numbers
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from keras.datasets import mnist # MNIST dataset is included in Keras%
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from keras.models import Sequential # Model type to be used
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from keras.layers import Dense, Dropout, Activation # Types of layers to be used in our model
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from keras.utils import to_categorical # NumPy related tools
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from keras import optimizers
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from sklearn.metrics import confusion_matrix
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import itertools
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print(tf.__version__)
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