dowhy.causal_estimators package¶
Submodules¶
dowhy.causal_estimators.econml_cate_estimator module¶
dowhy.causal_estimators.instrumental_variable_estimator module¶
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class
dowhy.causal_estimators.instrumental_variable_estimator.InstrumentalVariableEstimator(*args, **kwargs)[source]¶ Bases:
dowhy.causal_estimator.CausalEstimatorCompute effect of treatment using the instrumental variables method.
This is also a superclass that can be inherited by other specific methods.
Supports additional parameters that can be specified in the estimate_effect() method.
‘iv_instrument_name’: Name of the specific instrumental variable to be used. Needs to be one of the IVs identified in the identification step. Default is to use all the IV variables from the identification step.
dowhy.causal_estimators.linear_regression_estimator module¶
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class
dowhy.causal_estimators.linear_regression_estimator.LinearRegressionEstimator(*args, **kwargs)[source]¶ Bases:
dowhy.causal_estimator.CausalEstimatorCompute effect of treatment using linear regression.
Fits a regression model for estimating the outcome using treatment(s) and confounders. For a univariate treatment, the treatment effect is equivalent to the coefficient of the treatment variable.
Demo method to show the implementation of a causal inference method that can handle multiple treatments and heterogeneity in treatment. Requires a strong assumption that all relationships from (T, W) to Y are linear.
Common method but the assumptions required are too strong.
dowhy.causal_estimators.propensity_score_matching_estimator module¶
dowhy.causal_estimators.propensity_score_stratification_estimator module¶
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class
dowhy.causal_estimators.propensity_score_stratification_estimator.PropensityScoreStratificationEstimator(*args, num_strata=50, clipping_threshold=10, **kwargs)[source]¶ Bases:
dowhy.causal_estimator.CausalEstimatorEstimate effect of treatment by stratifying the data into bins with identical common causes.
Straightforward application of the back-door criterion.
dowhy.causal_estimators.propensity_score_weighting_estimator module¶
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class
dowhy.causal_estimators.propensity_score_weighting_estimator.PropensityScoreWeightingEstimator(*args, min_ps_score=0.05, max_ps_score=0.95, **kwargs)[source]¶ Bases:
dowhy.causal_estimator.CausalEstimatorEstimate effect of treatment by weighing the data by inverse probability of occurrence.
Straightforward application of the back-door criterion.
Supports additional parameters that can be specified in the estimate_effect() method.
‘weighting_scheme’: This is the name of weighting method to use. Can be inverse propensity score (“ips_weight”, default), stabilized IPS score (“ips_stabilized_weight”), or normalized IPS score (“ips_normalized_weight”)
dowhy.causal_estimators.regression_discontinuity_estimator module¶
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class
dowhy.causal_estimators.regression_discontinuity_estimator.RegressionDiscontinuityEstimator(*args, **kwargs)[source]¶ Bases:
dowhy.causal_estimator.CausalEstimatorCompute effect of treatment using the regression discontinuity method.
Estimates effect by transforming the problem to an instrumental variables problem.
Supports additional parameters that can be specified in the estimate_effect() method.
‘rd_variable_name’: name of the variable on which the discontinuity occurs. This is the instrument.
‘rd_threshold_value’: Threshold at which the discontinuity occurs.
‘rd_bandwidth’: Distance from the threshold within which confounders can be considered the same between treatment and control. Considered band is (threshold +- bandwidth)