On the other hand, it refines the features from the question of a student, and then returns the best answer of the question from the knowledge base with relational algorithms. 另一方面，對學(xué)生的問(wèn)題進(jìn)行特征提煉，最后，利用相關(guān)的算法從知識庫中返回學(xué)生問(wèn)題的最佳答案。
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