IntensityMatchSiameseEndo.py 文件源码

python
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项目:Siamese 作者: ascourge21 项目源码 文件源码
def train_model(x_tr, y_tr, conv_f_n):
    save_name = 'shape_match_model_endo.h5'
    tr_epoch = 15

    input_dim = x_tr.shape[2:]
    input_a = Input(shape=input_dim)
    input_b = Input(shape=input_dim)
    base_network = create_cnn_network(input_dim, conv_f_n)
    processed_a = base_network(input_a)
    processed_b = base_network(input_b)

    distance = Lambda(euclidean_distance, output_shape=eucl_dist_output_shape)([processed_a, processed_b])

    model_tr = Model(input=[input_a, input_b], output=distance)

    # train
    # opt_func = RMSprop(lr=.0005, clipnorm=1)
    opt_func = RMSprop()
    model_tr.compile(loss=contrastive_loss, optimizer=opt_func)
    model_tr.fit([x_tr[:, 0], x_tr[:, 1]], y_tr, validation_split=.25,
              batch_size=32, verbose=2, nb_epoch=tr_epoch, callbacks=[EarlyStopping(monitor='val_loss', patience=2)])
    model_tr.save(save_name)
    return model_tr


# test, also provide info on which pair it was trained on and which it was tested on
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