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# -*- coding: utf-8 -*- | ||
"""Example of combining multiple base outlier scores. Four combination | ||
frameworks are demonstrated: | ||
""" | ||
# Author: Yue Zhao <zhaoy@cmu.edu> | ||
# License: BSD 2 clause | ||
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from __future__ import division | ||
from __future__ import print_function | ||
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import os | ||
import sys | ||
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# temporary solution for relative imports in case pyod is not installed | ||
# if pyod is installed, no need to use the following line | ||
sys.path.append( | ||
os.path.abspath(os.path.join(os.path.dirname("__file__"), '..'))) | ||
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from scipy.io import loadmat | ||
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from pyod.models.knn import KNN | ||
from pyod.utils.data import generate_data | ||
from pyod.utils.data import evaluate_print | ||
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if __name__ == "__main__": | ||
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file_list = ['arrhythmia.mat', 'cardio.mat', 'ionosphere.mat', | ||
'letter.mat', 'pima.mat'] | ||
# Define data file and read X and y | ||
# Generate some data if the source data is missing | ||
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for mat_file in file_list: | ||
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try: | ||
mat = loadmat(os.path.join('data', mat_file)) | ||
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except TypeError: | ||
print('{data_file} does not exist. Use generated data'.format( | ||
data_file=mat_file)) | ||
X, y = generate_data(train_only=True) # load data | ||
except IOError: | ||
print('{data_file} does not exist. Use generated data'.format( | ||
data_file=mat_file)) | ||
X, y = generate_data(train_only=True) # load data | ||
else: | ||
X = mat['X'] | ||
y = mat['y'].ravel() | ||
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clf = KNN() # the algorithm you want to check | ||
# clf = KNN_new() | ||
clf.fit(X) # fit model | ||
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# print performance | ||
evaluate_print(mat_file, y, clf.decision_scores_) |
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