ranking_experiments.py 文件源码

def comp_mult(vectors, reciprocal=False):
        """
        :param vectors: vectors to be composed
        :param reciprocal: if True, apply reciprocal weighting
        :return: composed vector representation
        """

        if not reciprocal:
            composed_vector = reduce(lambda x, y: x * y, vectors)

        else:
            weight_vector = np.reciprocal(np.arange(1., len(vectors) + 1))
            weighted_vectors = []
            for i, weight in enumerate(weight_vector):
                weighted_vectors.append(vectors[i] * weight)
            composed_vector = reduce(lambda x, y: x * y, weighted_vectors)

        return composed_vector