added theta forecasting model

Author: skjoracle

ads/model/model_metadata.py

@@ -165,6 +165,7 @@ class Framework(ExtendedEnum):
     PYOD = "pyod"
     SPACY = "spacy"
     PROPHET = "prophet"
+    THETA = "theta"
     SKTIME = "sktime"
     STATSMODELS = "statsmodels"
     CUML = "cuml"

ads/opctl/operator/lowcode/forecast/const.py

@@ -16,6 +16,7 @@ class SupportedModels(ExtendedEnum):
     LGBForecast = "lgbforecast"
     AutoMLX = "automlx"
     AutoTS = "autots"
+    Theta = "theta"
     # Auto = "auto"
 
 

ads/opctl/operator/lowcode/forecast/model/factory.py

@@ -4,6 +4,7 @@
 # Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl/
 
 from ads.opctl.operator.lowcode.common.transformations import Transformations
+from .theta import ThetaOperatorModel
 
 from ..const import (
     AUTO_SELECT,
@@ -46,6 +47,7 @@ class ForecastOperatorModelFactory:
         SupportedModels.LGBForecast: MLForecastOperatorModel,
         SupportedModels.AutoMLX: AutoMLXOperatorModel,
         SupportedModels.AutoTS: AutoTSOperatorModel,
+        SupportedModels.Theta: ThetaOperatorModel,
     }
 
     @classmethod