forked from moreo/QuaPy
78 lines
2.8 KiB
Python
78 lines
2.8 KiB
Python
import pickle
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import numpy as np
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from sklearn.feature_extraction.text import TfidfVectorizer
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from sklearn.linear_model import LogisticRegression
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from tqdm import tqdm
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import quapy as qp
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from quapy.data import LabelledCollection
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from quapy.method.aggregative import *
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from data import load_multiclass_raw_document
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import os
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path_multiclass_raw = 'multiclass_raw'
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result_path = os.path.join('results', 'multiclass_raw')
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os.makedirs(result_path, exist_ok=True)
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train_file = os.path.join(path_multiclass_raw, 'documents', 'training.txt')
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train = LabelledCollection.load(train_file, load_multiclass_raw_document)
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print('classes', train.classes_)
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print('#classes', len(train.classes_))
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print('#docs', len(train))
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print('prevalence', train.prevalence())
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print('counts', train.counts())
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tfidf = TfidfVectorizer(min_df=5)
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train.instances = tfidf.fit_transform(train.instances)
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print(train.instances.shape[1])
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scores = {}
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for quantifier in [CC, ACC, PCC, PACC, EMQ]:#, HDy]:
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classifier = CalibratedClassifierCV(LogisticRegression())
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# classifier = LogisticRegression()
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model = quantifier(classifier).fit(train)
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print('model trained')
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quantifier_name = model.__class__.__name__
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scores[quantifier_name]={}
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for sample_set, sample_size in [('validation', 1000), ('test', 5000)]:
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ae_errors, rae_errors = [], []
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for i in tqdm(range(sample_size), total=sample_size, desc=f'testing {quantifier_name} in {sample_set}'):
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test_file = os.path.join(path_multiclass_raw, 'documents', f'{sample_set}_{i}.txt')
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test = LabelledCollection.load(test_file, load_multiclass_raw_document, classes=train.classes_)
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test.instances = tfidf.transform(test.instances)
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qp.environ['SAMPLE_SIZE'] = len(test)
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prev_estim = model.quantify(test.instances)
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prev_true = test.prevalence()
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ae_errors.append(qp.error.mae(prev_true, prev_estim))
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rae_errors.append(qp.error.mrae(prev_true, prev_estim))
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ae_errors = np.asarray(ae_errors)
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rae_errors = np.asarray(rae_errors)
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mae = ae_errors.mean()
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mrae = rae_errors.mean()
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scores[quantifier_name][sample_set] = {'mae': mae, 'mrae': mrae}
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pickle.dump(ae_errors, open(os.path.join(result_path, f'{quantifier_name}.{sample_set}.ae.pickle'), 'wb'), pickle.HIGHEST_PROTOCOL)
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pickle.dump(rae_errors, open(os.path.join(result_path, f'{quantifier_name}.{sample_set}.rae.pickle'), 'wb'), pickle.HIGHEST_PROTOCOL)
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print(f'{quantifier_name} {sample_set} MAE={mae:.4f}')
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print(f'{quantifier_name} {sample_set} MRAE={mrae:.4f}')
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for model in scores:
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for sample_set in ['validation', 'test']:
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print(f'{model}\t{sample_set}\t{scores[model][sample_set]["mae"]:.4f}\t{scores[model][sample_set]["mrae"]:.4f}')
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"""
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test:
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validation
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"""
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