fixes for anomaly operator

Author: prasankh

ads/opctl/operator/lowcode/anomaly/operator_config.py

@@ -36,6 +36,21 @@ class TestData(InputData):
     """Class representing operator specification test data details."""
 
 
+@dataclass(repr=True)
+class PreprocessingSteps(DataClassSerializable):
+    """Class representing preprocessing steps for operator."""
+
+    missing_value_imputation: bool = True
+    outlier_treatment: bool = False
+
+
+@dataclass(repr=True)
+class DataPreprocessor(DataClassSerializable):
+    """Class representing operator specification preprocessing details."""
+
+    enabled: bool = True
+    steps: PreprocessingSteps = field(default_factory=PreprocessingSteps)
+
 @dataclass(repr=True)
 class AnomalyOperatorSpec(DataClassSerializable):
     """Class representing operator specification."""
@@ -74,7 +89,9 @@ def __post_init__(self):
             self.generate_inliers if self.generate_inliers is not None else False
         )
         self.model_kwargs = self.model_kwargs or dict()
-
+        self.preprocessing = (
+            self.preprocessing if self.preprocessing is not None else DataPreprocessor(enabled=True)
+        )
 
 @dataclass(repr=True)
 class AnomalyOperatorConfig(OperatorConfig):

ads/opctl/operator/lowcode/anomaly/schema.yaml

@@ -307,11 +307,23 @@ spec:
         description: "When provided, target_category_columns [list] indexes the data into multiple related datasets for anomaly detection"
 
     preprocessing:
-      type: boolean
+      type: dict
       required: false
-      default: true
-      meta:
-        description: "preprocessing and feature engineering can be disabled using this flag, Defaults to true"
+      schema:
+        enabled:
+          type: boolean
+          required: false
+          default: true
+          meta:
+            description: "preprocessing and feature engineering can be disabled using this flag, Defaults to true"
+        steps:
+          type: dict
+          required: false
+          schema:
+            missing_value_imputation:
+              type: boolean
+              required: false
+              default: true
 
     generate_report:
       type: boolean