@@ -22,13 +22,16 @@ def test_neural_net():
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classes = ['setosa' , 'versicolor' , 'virginica' ]
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iris .classes_to_numbers (classes )
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n_samples , n_features = len (iris .examples ), iris .target
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+
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X , y = np .array ([x [:n_features ] for x in iris .examples ]), \
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np .array ([x [n_features ] for x in iris .examples ])
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+
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nnl_gd = NeuralNetworkLearner (iris , [4 ], l_rate = 0.15 , epochs = 100 , optimizer = stochastic_gradient_descent ).fit (X , y )
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assert grade_learner (nnl_gd , iris_tests ) > 0.7
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assert err_ratio (nnl_gd , iris ) < 0.15
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+
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nnl_adam = NeuralNetworkLearner (iris , [4 ], l_rate = 0.001 , epochs = 200 , optimizer = adam ).fit (X , y )
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- assert grade_learner (nnl_adam , iris_tests ) == 1
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+ assert grade_learner (nnl_adam , iris_tests ) > 0.7
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assert err_ratio (nnl_adam , iris ) < 0.15
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@@ -37,21 +40,26 @@ def test_perceptron():
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classes = ['setosa' , 'versicolor' , 'virginica' ]
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iris .classes_to_numbers (classes )
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n_samples , n_features = len (iris .examples ), iris .target
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+
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X , y = np .array ([x [:n_features ] for x in iris .examples ]), \
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np .array ([x [n_features ] for x in iris .examples ])
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+
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pl_gd = PerceptronLearner (iris , l_rate = 0.01 , epochs = 100 , optimizer = stochastic_gradient_descent ).fit (X , y )
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assert grade_learner (pl_gd , iris_tests ) == 1
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assert err_ratio (pl_gd , iris ) < 0.2
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+
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pl_adam = PerceptronLearner (iris , l_rate = 0.01 , epochs = 100 , optimizer = adam ).fit (X , y )
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assert grade_learner (pl_adam , iris_tests ) == 1
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assert err_ratio (pl_adam , iris ) < 0.2
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def test_rnn ():
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data = imdb .load_data (num_words = 5000 )
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+
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train , val , test = keras_dataset_loader (data )
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train = (train [0 ][:1000 ], train [1 ][:1000 ])
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val = (val [0 ][:200 ], val [1 ][:200 ])
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+
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rnn = SimpleRNNLearner (train , val )
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score = rnn .evaluate (test [0 ][:200 ], test [1 ][:200 ], verbose = False )
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assert score [1 ] >= 0.2
@@ -62,6 +70,7 @@ def test_autoencoder():
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classes = ['setosa' , 'versicolor' , 'virginica' ]
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iris .classes_to_numbers (classes )
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inputs = np .asarray (iris .examples )
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+
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al = AutoencoderLearner (inputs , 100 )
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print (inputs [0 ])
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print (al .predict (inputs [:1 ]))
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