[原创]z-score?

jwangying

初级会员
请教各位:计算z-score时,nord word 的出现频率包括该词所有词形的出现次数吗?
如:我要计算effect 与negative的搭配时的z值,是否应该包括将effects包括进去呢?

[本贴已被 xujiajin 于 2006年05月21日 14时55分49秒 编辑过]
 
Z-score有两种算法,一种是Berry-Rogghe的算法;一种是Tact软件提供的算法,前者不允许nord word 作为其自身搭配词,后者允许。
 
回复:[原创]z-score?

1) Whether or not to take the lemma as the unit for calculation is actually a theoretical issue. Some people argue against treating different forms of the same word as the same, while most others don't make a distinction unless there are differenbt senses involved (e.g. hit=to hit, hit=a hit). In other words, you have to make a case yourself for whatever decision you make.

2) Have you read this thread:

http://www.corpus4u.com/forum_view.asp?forum_id=57&view_id=1038
 
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