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# utils/treatment_effects.py | |
from sklearn.linear_model import LinearRegression, LogisticRegression | |
import pandas as pd | |
import numpy as np | |
# For matching-based methods, you might need libraries like dowhy or causalml | |
# import statsmodels.api as sm # Example for regression diagnostics | |
class TreatmentEffectAlgorithms: | |
def linear_regression_ate(self, df, treatment_col, outcome_col, covariates): | |
""" | |
Estimate ATE using linear regression. | |
""" | |
X = df[covariates + [treatment_col]] | |
y = df[outcome_col] | |
model = LinearRegression() | |
model.fit(X, y) | |
ate = model.coef_[-1] # Coefficient of treatment_col | |
return float(ate) | |
def propensity_score_matching(self, df, treatment_col, outcome_col, covariates): | |
""" | |
Placeholder for Propensity Score Matching. | |
You would implement or integrate a matching algorithm here. | |
""" | |
print("Propensity Score Matching is a placeholder. Returning a dummy ATE.") | |
# Simplified: Estimate propensity scores | |
X_propensity = df[covariates] | |
T_propensity = df[treatment_col] | |
prop_model = LogisticRegression(solver='liblinear') | |
prop_model.fit(X_propensity, T_propensity) | |
propensity_scores = prop_model.predict_proba(X_propensity)[:, 1] | |
# Dummy ATE calculation for demonstration | |
treated_outcome = df[df[treatment_col] == 1][outcome_col].mean() | |
control_outcome = df[df[treatment_col] == 0][outcome_col].mean() | |
return float(treated_outcome - control_outcome) # Simplified dummy ATE | |
def inverse_propensity_weighting(self, df, treatment_col, outcome_col, covariates): | |
""" | |
Placeholder for Inverse Propensity Weighting (IPW). | |
You would implement or integrate IPW here. | |
""" | |
print("Inverse Propensity Weighting is a placeholder. Returning a dummy ATE.") | |
# Dummy ATE for demonstration | |
return np.random.rand() * 10 # Random dummy value | |
def t_learner(self, df, treatment_col, outcome_col, covariates): | |
""" | |
Placeholder for T-learner. | |
You would implement a T-learner using two separate models. | |
""" | |
print("T-learner is a placeholder. Returning a dummy ATE.") | |
# Dummy ATE for demonstration | |
return np.random.rand() * 10 + 5 # Random dummy value | |
def s_learner(self, df, treatment_col, outcome_col, covariates): | |
""" | |
Placeholder for S-learner. | |
You would implement an S-learner using a single model. | |
""" | |
print("S-learner is a placeholder. Returning a dummy ATE.") | |
# Dummy ATE for demonstration | |
return np.random.rand() * 10 - 2 # Random dummy value |