semantic tree造句

First , the question answering system calculates semantic similarity by using distance between words in semantic tree and the height of semantic tree , then this system uses semantic similarity between words and the weight of word to calculate semantic similarity between users ' questions and questions in answer database
首先，利用语义树中词语间的距离和语义树的高度来计算词语间的语义相似度，然后利用词语间的语义相似度和词语的权重进一步计算用户问题与答案库中问题间的语义相似度。
It's difficult to find semantic tree in a sentence. 用semantic tree造句挺难的