text: #
  # Copyright 2018 Analytics Zoo Authors.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  #
  
  from abc import ABC, abstractmethod
  
  
  class AnomalyDetector(ABC):
      """
      The Anomaly Detector Interface
      """
      @abstractmethod
      def fit(self, y):
          """
          fit the model to the input time series
          :param y: input time series
          """
          pass
  
      @abstractmethod
      def score(self):
          """
          calculate anomaly scores for each sample in input time series
          :return: anomaly scores
          """
          pass
  
      @abstractmethod
      def anomaly_indexes(self):
          """
          gets the indexes of the anomalies.
          :return: the indexes of the anomalies.
          """
          pass
  