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- from sklearn import datasets
- from sklearn import svm
- from sklearn.neighbors import KNeighborsClassifier
- from sklearn.linear_model import LogisticRegression
- from sklearn.cross_validation import train_test_split
- from sklearn.preprocessing import LabelEncoder
- import numpy as np
- import pandas as pd
- import matplotlib.pyplot as plt
- from collections import defaultdict
- df_train = pd.read_csv('/Users/justinchristensen/Documents/Python_Education/SKLearn/Path_Training_Data.csv')
- df_test = pd.read_csv('/Users/justinchristensen/Documents/Python_Education/SKLearn/Path_Test_Data.csv')
- #Separate columns in training data set
- x_train = df_train.iloc[:,:-1]
- y_train = df_train.iloc[:,-1:]
- #Separate columns in test data set
- x_test = df_test.iloc[:,:-1]
- #Initiate classifier
- clf = svm.SVC(gamma=0.001, C=100)
- le = LabelEncoder()
- #Transform strings into integers
- x_train_encoded = x_train.apply(LabelEncoder().fit_transform)
- y_train_encoded = y_train.apply(LabelEncoder().fit_transform)
- x_test_encoded = x_test.apply(LabelEncoder().fit_transform)
- #Fit the model into the classifier
- clf.fit(x_train_encoded,y_train_encoded)
- #Predict test values
- y_pred = clf.predict(x_test_encoded)
- ---------------------------------------------------------------------------
- NotFittedError Traceback (most recent call last)
- <ipython-input-38-09840b0071d5> in <module>()
- 1
- ----> 2 y_pred_inverse = le.inverse_transform(y_pred)
- ~/anaconda3/lib/python3.6/site-packages/sklearn/preprocessing/label.py in inverse_transform(self, y)
- 146 y : numpy array of shape [n_samples]
- 147 """
- --> 148 check_is_fitted(self, 'classes_')
- 149
- 150 diff = np.setdiff1d(y, np.arange(len(self.classes_)))
- ~/anaconda3/lib/python3.6/site-packages/sklearn/utils/validation.py in check_is_fitted(estimator, attributes, msg, all_or_any)
- 766
- 767 if not all_or_any([hasattr(estimator, attr) for attr in attributes]):
- --> 768 raise NotFittedError(msg % {'name': type(estimator).__name__})
- 769
- 770
- NotFittedError: This LabelEncoder instance is not fitted yet. Call 'fit' with appropriate arguments before using this method.
- y_train_encoded = y_train.apply(le().fit_transform)
- y_test_encoded = y_test.apply(le().fit_transform)
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