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- ##TODO:
- # Arguments from the input
- # Excessive functions -> parameters
- # Common module
- import pandas as pd
- import numpy as np
- import matplotlib.pyplot as plt
- import scipy.stats
- from sklearn.feature_extraction.text import TfidfVectorizer
- from sklearn.linear_model import LogisticRegression
- from sklearn.multioutput import MultiOutputRegressor
- from sklearn.model_selection import train_test_split
- from sklearn.metrics import *
- import dagshub
- import pickle
- def load_corpus(DATASET_PATH, CODE_COLUMN):
- df = pd.read_csv(DATASET_PATH, encoding='utf-8', comment='#', sep='\t')#, quoting=csv.QUOTE_NONE, error_bad_lines=False)#, sep=','
- df.dropna(axis=0, inplace=True)
- corpus = df[CODE_COLUMN]
- test_size = 0.1
- test_rows = round(df.shape[0]*test_size)
- train_rows = df.shape[0] - test_rows
- train_corpus = df[CODE_COLUMN][0:test_rows]
- test_corpus = df[CODE_COLUMN][train_rows:]
- return df, corpus
- def tfidf_transform(corpus, tfidf_params, TFIDF_DIR):
- tfidf = pickle.load(open(TFIDF_DIR, 'rb'))
- features = tfidf.transform(corpus)
- return features
- def tfidf_fit_transform(code_blocks, tfidf_params, TFIDF_DIR):
- tfidf = TfidfVectorizer(tfidf_params)
- print(code_blocks.head())
- tfidf = tfidf.fit(code_blocks)
- pickle.dump(tfidf, open(TFIDF_DIR, "wb"))
- code_blocks_tfidf = tfidf.transform(code_blocks)
- return code_blocks_tfidf
- def logreg_evaluate(df, code_blocks, TAG_TO_PREDICT):
- code_blocks_tfidf = tfidf_fit_transform(code_blocks, tfidf_params, TFIDF_DIR)
- X_train, X_test, y_train, y_test = train_test_split(code_blocks_tfidf, df[TAG_TO_PREDICT], test_size=0.25)
- clf = LogisticRegression(random_state=421).fit(X_train, y_train)
- print("saving the model")
- pickle.dump(clf, open(MODEL_DIR, 'wb'))
- y_pred = clf.predict(X_test)
- accuracy = clf.score(X_test, y_test)
- f1 = f1_score(y_pred, y_test, average='weighted')
- print(f'Mean Accuracy {round(accuracy*100, 2)}%')
- print(f'F1-score {round(f1*100, 2)}%')
- errors = y_test - y_pred
- plt.hist(errors)
- plot_precision_recall_curve(clf, X_test, y_test)
- plot_confusion_matrix(clf, X_test, y_test, values_format='d')
- def mean_confidence_interval(data, confidence=0.95):
- a = 1.0 * np.array(data)
- n = len(a)
- m, se = np.mean(a), scipy.stats.sem(a)
- h = se * scipy.stats.t.ppf((1 + confidence) / 2., n-1)
- return m, m-h, m+h
- conf_interval = mean_confidence_interval(errors, 0.95)
- print(conf_interval)
- metrics = {'test_accuracy': accuracy
- , 'test_f1_score': f1}
- return metrics
- def logreg_multioutput_evaluate(df, code_blocks, TAGS_TO_PREDICT):
- code_blocks_tfidf = tfidf_fit_transform(code_blocks, tfidf_params, TFIDF_DIR)
- print("splitting")
- X_train, X_test, Y_train, Y_test = train_test_split(code_blocks_tfidf, df[TAGS_TO_PREDICT], test_size=0.25)
- print("training the model")
- clf = MultiOutputRegressor(LogisticRegression(random_state=421)).fit(X_train, Y_train)
- print("saving the model")
- pickle.dump(clf, open(MODEL_DIR, 'wb'))
- Y_pred = clf.predict(X_test)
- accuracy = clf.score(X_test, Y_test)
- f1 = f1_score(Y_pred, Y_test, average='weighted')
- print(f'Mean Accuracy {round(accuracy*100, 2)}%')
- print(f'F1-score {round(f1*100, 2)}%')
- # errors = Y_test - Y_pred
- # plt.hist(errors)
- # plot_precision_recall_curve(clf, X_test, Y_test)
- # plot_confusion_matrix(clf, X_test, Y_test, values_format='d')
- # def mean_confidence_interval(data, confidence=0.95):
- # a = 1.0 * np.array(data)
- # n = len(a)
- # m, se = np.mean(a), scipy.stats.sem(a)
- # h = se * scipy.stats.t.ppf((1 + confidence) / 2., n-1)
- # return m, m-h, m+h
- # conf_interval = mean_confidence_interval(errors, 0.95)
- # print(conf_interval)
- metrics = {'test_accuracy': accuracy
- , 'test_f1_score': f1}
- return metrics
- def get_predictions(X, y, TAGS_TO_PREDICT, MODEL_DIR):
- clf = pickle.load(open(MODEL_DIR, 'rb'))
- # result = loaded_model.score(X, y)
- y_pred = clf.predict(X)
- accuracy = accuracy_score(y_pred, y)
- f1 = f1_score(y_pred, y, average='weighted')
- print(f'Mean Accuracy {round(accuracy*100, 2)}%')
- print(f'F1-score {round(f1*100, 2)}%')
- errors = y - y_pred
- plt.hist(errors)
- plot_precision_recall_curve(clf, X, y)
- plot_confusion_matrix(clf, X, y, values_format='d')
- def mean_confidence_interval(data, confidence=0.95):
- a = 1.0 * np.array(data)
- n = len(a)
- m, se = np.mean(a), scipy.stats.sem(a)
- h = se * scipy.stats.t.ppf((1 + confidence) / 2., n-1)
- return m, m-h, m+h
- conf_interval = mean_confidence_interval(errors, 0.95)
- print(conf_interval)
- metrics = {'test_accuracy': accuracy
- , 'test_f1_score': f1}
- return metrics
- GRAPH_VER = 5
- DATASET_PATH = './data/kaggle_10_regex_v{}.csv'.format(GRAPH_VER)
- MODEL_DIR = './models/logreg_regex_graph_v{}.sav'.format(GRAPH_VER)
- TFIDF_DIR = './models/tfidf_logreg_graph_v{}.pickle'.format(GRAPH_VER)
- CODE_COLUMN = 'code_block'
- TAGS_TO_PREDICT = ['import', 'data_import', 'data_export', 'preprocessing',
- 'visualization', 'model', 'train', 'predict']
- PREDICT_COL = 'pred_{}'.format(TAGS_TO_PREDICT)
- SCRIPT_DIR = 'logreg_classifier.ipynb'
- VAL_CHUNK_SIZE = 10
- VAL_CODE_COLUMN = 'code'
- VAL_TAGS_TO_PREDICT = 'tag'
- VAL_DATASET_PATH = './data/chunks_{}_validate.csv'.format(VAL_CHUNK_SIZE)
- if __name__ == '__main__':
- df, code_blocks = load_corpus(DATASET_PATH, CODE_COLUMN)
- nrows = df.shape[0]
- print("loaded")
- tfidf_params = {'min_df': 5
- , 'max_df': 0.3
- , 'smooth_idf': True}
- data_meta = {'DATASET_PATH': DATASET_PATH
- ,'nrows': nrows
- ,'label': TAGS_TO_PREDICT
- ,'model': MODEL_DIR
- ,'script_dir': SCRIPT_DIR
- ,'task': 'training and evaluation'}
- print("tfidf-ed")
- with dagshub.dagshub_logger() as logger:
- metrics = logreg_multioutput_evaluate(df, code_blocks, TAGS_TO_PREDICT)
- # metrics = get_predictions(features, df[TAGS_TO_PREDICT], TAGS_TO_PREDICT, MODEL_DIR)
- logger.log_hyperparams(data_meta)
- logger.log_hyperparams(tfidf_params)
- logger.log_metrics(metrics)
- print("finished")
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