DCH inherits from base estimator

Author: Christian Jorgensen

pyproject.toml

@@ -38,7 +38,7 @@ classifiers = [
     "Topic :: Scientific/Engineering",
 ]
 dependencies = [
-    "scikit-learn >= 1.6, < 1.7",
+    "scikit-learn >= 1.7",
     "scipy >= 1.15",  # explicit to adhere to scikit-learn dependencies
 ]
 dynamic = ["version"]

src/skmatter/sample_selection/_base.py

@@ -7,6 +7,7 @@
 from scipy.interpolate._interpnd import _ndim_coords_from_arrays
 from scipy.spatial import ConvexHull
 from sklearn.utils.validation import check_array, check_is_fitted, check_X_y
+from sklearn.base import BaseEstimator
 
 from .._selection import _CUR, _FPS, _PCovCUR, _PCovFPS
 
@@ -479,7 +480,7 @@ def _directional_distance(equations, points):
     return -orthogonal_distances / equations[:, :1].T
 
 
-class DirectionalConvexHull:
+class DirectionalConvexHull(BaseEstimator):
     """
     Performs Sample Selection by constructing a Directional Convex Hull and determining
     the distance to the hull as outlined in the reference [dch]_.