[Corpora-List] question as to MI and t score

Ramesh Krishnamurthy r.krishnamurthy at aston.ac.uk
Thu Dec 15 13:35:00 CET 2005



Please see http://torvald.aksis.uib.no/corpora/1999-4/0146.html

If I have understood correctly, the MI score tells you about the
'strength of association'
(but if the corpus frequency figures for either item are very low,
then you may not have much
confidence in the association; eg extreme case: X and Y occur only
once each in the corpus,
but in that one occurrence, they are adjacent to each other); t-score
takes into account the
corpus frequency of the items, so gives you a'confidence rating' in
the association...

I suspect that the corpus frequencies for ['play' and 'role] and
['fight' and 'battle'] would also have to be
similar for you to make the claim that they have a similar overall
collocational relationship...

Hope this helps
Ramesh


At 16:14 14/12/2005, Helene Stengers wrote:

>Dear list,

>

>Imagine you have called up collocation listings for the node word

>lemmas "play" and "fight". In both lists, the association with for

>example the collocates "role" and "battle" has the exactly the

>same MI / t score. Can I assume that both collocations, i.e. "play a

>role" and "fight a battle" have the same "collocational strength",

>or is that a wrong assumption?

>

>Thanks,

>Helene


Ramesh Krishnamurthy
Lecturer in English Studies
School of Languages and Social Sciences
Aston University, Birmingham B4 7ET, UK
Tel: +44 (0)121-204-3812
Fax: +44 (0)121-204-3766
http://www.aston.ac.uk/lss/english/
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