Delete preprocess.py
Browse files- preprocess.py +0 -108
preprocess.py
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# create_demo_data.py - Cria dados de demonstração e modelos base
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import pandas as pd
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import numpy as np
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from sklearn.model_selection import train_test_split
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from sklearn.preprocessing import StandardScaler
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from sklearn.linear_model import LogisticRegression
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from sklearn.neighbors import KNeighborsClassifier
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from sklearn.svm import SVC
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from sklearn.metrics import accuracy_score, precision_score, recall_score, f1_score, roc_auc_score
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import joblib
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def create_demo_dataset():
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"""Cria dataset de demonstração realístico"""
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np.random.seed(42)
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n_samples = 2000
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# Features baseadas no dataset real de hotéis
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features = {
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'lead_time': np.random.gamma(2, 50, n_samples),
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'adr': np.random.normal(100, 30, n_samples),
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'adults': np.random.poisson(2, n_samples),
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'children': np.random.poisson(0.3, n_samples),
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'previous_cancellations': np.random.poisson(0.1, n_samples),
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'is_repeated_guest': np.random.binomial(1, 0.1, n_samples),
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'required_car_parking_spaces': np.random.binomial(1, 0.2, n_samples),
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'total_of_special_requests': np.random.poisson(0.5, n_samples),
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'booking_changes': np.random.poisson(0.3, n_samples),
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}
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X = pd.DataFrame(features)
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# Criar target com relação realística
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cancellation_prob = 1 / (1 + np.exp(-(
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X['lead_time'] * 0.01 +
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X['adr'] * 0.005 -
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X['is_repeated_guest'] * 0.8 -
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X['required_car_parking_spaces'] * 0.3 +
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X['total_of_special_requests'] * -0.4 +
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np.random.normal(0, 0.5, n_samples)
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)))
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y = (cancellation_prob > 0.5).astype(int)
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return X, y
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def train_and_save_models():
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"""Treina e salva modelos de demonstração"""
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# Criar dados
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X, y = create_demo_dataset()
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# Split dos dados
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X_train, X_test, y_train, y_test = train_test_split(
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X, y, test_size=0.3, random_state=42, stratify=y
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)
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# Normalizar
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scaler = StandardScaler()
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X_train_scaled = scaler.fit_transform(X_train)
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X_test_scaled = scaler.transform(X_test)
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# Treinar modelos
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models = {}
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results = {}
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# Regressão Logística
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lr = LogisticRegression(random_state=42, max_iter=1000)
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lr.fit(X_train_scaled, y_train)
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models['RL_Padrao'] = lr
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# KNN
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knn = KNeighborsClassifier(n_neighbors=5)
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knn.fit(X_train_scaled, y_train)
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models['KNN_Padrao'] = knn
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# SVM
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svm = SVC(probability=True, random_state=42)
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svm.fit(X_train_scaled, y_train)
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models['SVM_Padrao'] = svm
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# Avaliar modelos
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for name, model in models.items():
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y_pred = model.predict(X_test_scaled)
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y_proba = model.predict_proba(X_test_scaled)[:, 1]
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results[name] = {
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'Acurácia': accuracy_score(y_test, y_pred),
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'Precisão': precision_score(y_test, y_pred, zero_division=0),
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'Recall': recall_score(y_test, y_pred, zero_division=0),
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'F1-Score': f1_score(y_test, y_pred, zero_division=0),
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'AUC-ROC': roc_auc_score(y_test, y_proba),
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'Tempo Treino (s)': 0
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}
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# Salvar dados
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data_to_save = {
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'models': models,
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'X_train': X_train_scaled,
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'X_test': X_test_scaled,
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'y_train': y_train,
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'y_test': y_test,
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'results': results
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}
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joblib.dump(data_to_save, 'modelos_treinados.pkl')
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print("✅ Dados de demonstração e modelos salvos em 'modelos_treinados.pkl'")
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if __name__ == "__main__":
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train_and_save_models()
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