On 7/31/07, <b class="gmail_sendername"><a href="mailto:maxwell@umiacs.umd.edu">maxwell@umiacs.umd.edu</a></b> <<a href="mailto:maxwell@umiacs.umd.edu">maxwell@umiacs.umd.edu</a>> wrote:<div><span class="gmail_quote">
</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">> I agree Mike. I don't think Chomsky argued against observational adequacy.<br>
> Any theory must explain the data. I would say Chomsky argued against<br>> observational sufficiency.<br>><br>> I hope that won't now lead to an argument about the meaning of the word<br>> "sufficiency".
<br><br>You won't get an argument from me about observational sufficiency, and in<br>fact I think that's exactly right: a grammar that captures all of some set<br>of observations (whether those are from a corpus, or from introspection,
<br>or both) is not necessarily complete nor necessarily a grammar of what a<br>native speaker knows, and therefore not sufficient.</blockquote><div><br>I'm glad we can agree on this Mike.<br><br>But there is a twist. You are talking about grammar_s_, plural, as an example of observational insufficiency. I want to focus on that.
<br><br>I think that was indeed the problem Chomsky saw.<br><br>Now, to Chomsky that meant something in the mind of a native speaker must select between them.<br><br>I don't think that hypothesis panned out.<br><br>However there is another way to interpret the same data. Same data, different conclusion.
<br><br>To me the fact we get many grammars from the same set of observations (observational insufficiency) means they are all good, and we need to keep the observations so we can find the one we need, when we need it.<br>
<br>Do people see this not only keeps the corpus linguists happy, the corpus is the only way to get all those grammars, but it also makes the machine learning guys happy, because they can describe more structure with more precision (more grammars, and it explains why they could never find one complete one.)
<br><br>-Rob<br><br></div><br><div><br><br> </div><br></div><br>