dowhy/causal_estimators/distance_matching_estimator.py [95:105]:
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                control_neighbors = (
                    NearestNeighbors(n_neighbors=self.num_matches_per_unit,
                        metric=self.distance_metric,
                        algorithm='ball_tree',
                        **self.distance_metric_params)
                    .fit(control[self._observed_common_causes.columns].values)
                )
                distances, indices = control_neighbors.kneighbors(
                        treated[self._observed_common_causes.columns].values)
                self.logger.debug("distances:")
                self.logger.debug(distances)
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dowhy/causal_estimators/distance_matching_estimator.py [133:143]:
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                    control_neighbors = (
                        NearestNeighbors(n_neighbors=self.num_matches_per_unit,
                            metric=self.distance_metric,
                            algorithm='ball_tree',
                            **self.distance_metric_params)
                        .fit(control[self._observed_common_causes.columns].values)
                    )
                    distances, indices = control_neighbors.kneighbors(
                            treated[self._observed_common_causes.columns].values)
                    self.logger.debug("distances:")
                    self.logger.debug(distances)
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