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@@ -22,8 +22,7 @@ from keras.layers import Dense, Dropout, Input
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from keras.models import Model,Sequential
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from tqdm import tqdm
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from keras.layers.advanced_activations import LeakyReLU
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-from keras.optimizers import Adam
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-from keras.optimizers import RMSprop
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+from tensorflow.keras.optimizers import Adam
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from keras import losses
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from keras import backend as K
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import tensorflow as tf
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@@ -53,9 +52,6 @@ features_x.shape
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# Until now we have obtained the data. We divided it into training and test sets. we separated obtained seperate variables for the majority and miority classes and their labels for both sets.
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## convGAN
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-from IPython.display import Image
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-Image(filename='CoSPOV.jpg')
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-
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def unison_shuffled_copies(a, b,seed_perm):
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'Shuffling the feature matrix along with the labels with same order'
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np.random.seed(seed_perm)##change seed 1,2,3,4,5
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@@ -125,7 +121,7 @@ def conv_sample_gen():
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aff=tf.transpose(x[0]) ## Now we transpose the matrix. So each column is now a set of convex coefficients
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synth=tf.matmul(aff,min_neb_batch) ## We now do matrix multiplication of the affine combinations with the original minority batch taken as input. This generates a convex transformation of the input minority batch
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model = Model(inputs=min_neb_batch, outputs=synth) ## finally we compile the generator with an arbitrary minortiy neighbourhood batch as input and a covex space transformation of the same number of samples as output
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- opt = keras.optimizers.Adam(learning_rate=0.001)
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+ opt = Adam(learning_rate=0.001)
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model.compile(loss='mean_squared_logarithmic_error', optimizer=opt)
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return model
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@@ -141,7 +137,7 @@ def maj_min_disc():
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y= keras.layers.Dense(125, activation='relu')(y)
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output= keras.layers.Dense(2, activation='sigmoid')(y) ## two output nodes. outputs have to be one-hot coded (see labels variable before)
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model = Model(inputs=samples, outputs=output) ## compile model
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- opt = keras.optimizers.Adam(learning_rate=0.0001)
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+ opt = Adam(learning_rate=0.0001)
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model.compile(loss='binary_crossentropy', optimizer=opt)
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return model
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@@ -162,7 +158,7 @@ def convGAN(generator,discriminator):
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output=discriminator(new_samples) ## pass the concatenated vector into the discriminator to know its decisions
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## note that, the discriminator will not be traied but will make decisions based on its previous training while using this function
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model = Model(inputs=batch_data, outputs=output)
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- opt = keras.optimizers.Adam(learning_rate=0.0001)
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+ opt = Adam(learning_rate=0.0001)
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model.compile(loss='mse', optimizer=opt)
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return model
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