한방에 99.9% 정확도, 오차>> X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.3, random_state=0) >>> X_train.shape (48456, 13) >>> y_train.shape (48456,) >>> X_test.shape (20767, 13) >>> y_test.shape (20767,) >>> classifier.add(Dense(units = 13, activation = 'relu')) >>> classifier.add(Dense(units = 1, activation = 'sigmoid')) >>> classifier.compile(optimizer = 'adam', loss = 'binary..