diff --git a/ultrack/core/tracker.py b/ultrack/core/tracker.py
index f3d21a3..a285341 100644
--- a/ultrack/core/tracker.py
+++ b/ultrack/core/tracker.py
@@ -21,6 +21,7 @@
 from ultrack.core.segmentation.processing import segment
 from ultrack.core.solve.processing import solve
 from ultrack.imgproc.flow import add_flow
+from ultrack.ml.classification import add_nodes_prob
 from ultrack.utils.deprecation import rename_argument
 
 
@@ -153,3 +154,11 @@ def to_tracks_layer(self, *args, **kwargs) -> Tuple[pd.DataFrame, Dict]:
     def export_by_extension(self, filename: str, overwrite: bool = False) -> None:
         self._assert_solved()
         export_tracks_by_extension(self.config, filename, overwrite=overwrite)
+
+    @functools.wraps(add_nodes_prob)
+    def add_nodes_prob(
+        self,
+        indices: ArrayLike,
+        probs: ArrayLike,
+    ) -> None:
+        add_nodes_prob(self.config, indices, probs)
diff --git a/ultrack/ml/__init__.py b/ultrack/ml/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/ultrack/ml/classification.py b/ultrack/ml/classification.py
new file mode 100644
index 0000000..de098fa
--- /dev/null
+++ b/ultrack/ml/classification.py
@@ -0,0 +1,28 @@
+from numpy.typing import ArrayLike
+
+from ultrack.config.config import MainConfig
+from ultrack.core.database import set_node_values
+
+
+def add_nodes_prob(
+    config: MainConfig,
+    indices: ArrayLike,
+    probs: ArrayLike,
+) -> None:
+    """
+    Add nodes' probabilities to the segmentation/tracking database.
+
+    Parameters
+    ----------
+    config : MainConfig
+        Main configuration parameters.
+    indices : ArrayLike
+        Nodes' indices database index.
+    probs : ArrayLike
+        Nodes' probabilities.
+    """
+    set_node_values(
+        config.data_config,
+        indices,
+        node_prob=probs,
+    )