prepare for categorical encoders

Author: frederikhoengaard

python/src/lazylearn/preprocessing/__init__.py

@@ -0,0 +1,15 @@
+class OrdinalConverter:
+    def __init__(
+        self,
+        max_cardinality: int = None,
+        min_support: int = 5,
+        other_category: bool = True,
+        method: str = "freq",
+    ):
+        self.card_max = max_cardinality
+        self.min_support = min_support
+        self.other_category = other_category
+        self.method = method
+
+    def convert(self, df, col):
+        pass