qis.compute_one_factor_ewm_betas¶ qis.compute_one_factor_ewm_betas(x, y, span=None, ewm_lambda=0.94, nan_backfill=NanBackfill.FFILL)[source]¶ ewm betas of y wrt factor 1-d x Parameters: x (Series) y (DataFrame) span (int | ndarray) ewm_lambda (float) nan_backfill (NanBackfill) Return type: DataFrame