def METHOD_NAME(self, msg_data):
    """
    Callback that process the input data and publishes to the corresponding topics
    :param msg_data: input message
    :type msg_data: std_msgs.msg.Float32MultiArray
    """
    # Convert Float32MultiArray to OpenDR Timeseries
    data = self.bridge.from_rosarray_to_timeseries(msg_data, self.channels, self.series_length)
    # Run ecg classification
    class_pred = self.learner.infer(data)
    # Publish results
    ros_class = self.bridge.from_category_to_rosclass(class_pred)
    self.publisher.publish(ros_class)