Ratio scale interval

ratio_scale_component(X: ndarray, Y: ndarray, ratio_indices: list[int], ranges: ndarray, h: ndarray, missing_strategy: str = 'ignore', weights: ndarray | None = None, scale_window: str | None = None) → tuple[ndarray, ndarray]

Compute range-scaled Gower component for ratio-scale features.

Parameters:

• X (np.ndarray) – array (n_x, n_features)

• Y (np.ndarray) – array (n_y, n_features)

• ratio_indices (list[int]) – indices of ratio-scale columns

• ranges (np.ndarray) – 1D array of ranges for each ratio-scale column

• h (np.ndarray) – optional 1D array of bandwidths for KDE scaling

• missing_strategy (str) – one of “ignore”, “max_dist”, “raise_error”

• weights (Optional[np.ndarray]) – optional 1D array of same length as ratio_indices

• scale_window (Optional[str]) – optional scaling window method

Returns:

• sum_diff: matrix (n_x, n_y) weighted sum of per-feature distances

• count_present: matrix (n_x, n_y) number of non-missing pairs per feature

Return type:

tuple[np.ndarray, np.ndarray]