Euclidean distance between syntactically linked words
Euclidean distance between syntactically linked words
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DOI：
10.1103/physreve.70.056135
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发表时间：
2004-11-01
影响因子：
2.4
通讯作者：
Cancho, RFI
中科院分区：
文献类型：
--
作者：
Cancho, RFI
我们研究了句子中句法连接词之间的欧氏距离。平均距离非常小，并且是句子长度的一个非常缓慢增长的函数。我们考虑两个不排除的假设：（a）平均距离最小化和（B）的平均距离受到限制。对（a）的支持来自于真实的句子达到的显著小的平均距离。最小化假设的强度随着句子的长度而降低。对（B）的支持来自平均距离相对于句子长度的非常缓慢的增长。此外，在理想条件下，（B）预测了链接词之间距离的指数分布，这种趋势可以在真实的句子中识别。
We study the Euclidean distance between syntactically linked words in sentences. The average distance is significantly small and is a very slowly growing function of sentence length. We consider two nonexcluding hypotheses: (a) the average distance is minimized and (b) the average distance is constrained. Support for (a) comes from the significantly small average distance real sentences achieve. The strength of the minimization hypothesis decreases with the length of the sentence. Support for (b) comes from the very slow growth of the average distance versus sentence length. Furthermore, (b) predicts, under ideal conditions, an exponential distribution of the distance between linked words, a trend that can be identified in real sentences.