Source code for jina.executors.evaluators.embedding

__copyright__ = "Copyright (c) 2020 Jina AI Limited. All rights reserved."
__license__ = "Apache-2.0"

import numpy as np

from .. import BaseEvaluator

[docs]class BaseEmbeddingEvaluator(BaseEvaluator): """A :class:`BaseEmbeddingEvaluator` evaluates the difference between actual and desired embeddings"""
[docs] def evaluate( self, actual: 'np.array', desired: 'np.array', *args, **kwargs ) -> float: """ " :param actual: the embedding of the document (resulting from an Encoder) :param desired: the expected embedding of the document :return the evaluation metric value for the request document """ raise NotImplementedError
[docs]def expand_vector(vec): """ Expand 1d vector with one dimension axis == 0. :param vec: Vector to be expanded. :return: Expanded vector, """ if not isinstance(vec, np.ndarray): vec = np.array(vec) if len(vec.shape) == 1: vec = np.expand_dims(vec, 0) return vec