def cosine(q,a):
pooled_len_1 = tf.sqrt(tf.reduce_sum(q * q, 1))
pooled_len_2 = tf.sqrt(tf.reduce_sum(a * a, 1))
pooled_mul_12 = tf.reduce_sum(q * a, 1)
score = tf.div(pooled_mul_12, pooled_len_1 * pooled_len_2 +1e-8, name="scores")
return score
tensorflow 余弦相似度实现
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