From: Aureliano Calvo <aurelianocalvo@...>
Date: 2007-06-17T04:17:27+09:00
Subject: Re: Negative lookahead in Regexp question

Wouldn't it be better to just use a xml parser?
On 6/16/07, Axel Etzold <AEtzold@gmx.de> wrote:> Dear Byron,>> thank you for responding.> I am working on an analysis of so-called chunked text,> i.e., an analysis of words in a sentence, that> classifies words as nouns / verbs / adjectives etc.>> A typical sentence with chunking tags thus looks like this:>> "<NC> The physical descriptions </NC> <PC> of <NC> places </NC> <PC> in <NC> North Carolina </NC> </PC> , <PC> in </PC> <ADV> so far </ADV> as <NC> they </NC> <VC> are </VC> <NC> specific </NC> <PC> at <NC> all </NC> </PC> , <VC> owe </VC> <NC> a little </NC> <PC> to <NC> memories </NC> </PC> <PC> of <NC> my childhood </NC>, although <NC> I </NC> <VC> 've also borrowed </VC> <ADV> indiscriminately </ADV> <PC> from <NC> other people 's childhood memories </NC> </PC> <PC> as </PC> <ADV> well </ADV> .">> Originally, I wanted to use Regexps to split the original sentence> into groups using negative lookahead, which I've now skipped in favor> of repeated Array.splits, but I think I could you use knowing how to> search for a substring using negative lookahead, i.e., as in my example:>> regexp=/.../  <= searched for, such that:> string="<NC> In North Carolina </NC>"> ref=regexp.match(string)> p ref[1]  => "In North Carolina">> Thank you for any help!>> Best regards,>> Axel> --> Psssst! Schon vom neuen GMX MultiMessenger geh旦rt?> Der kanns mit allen: http://www.gmx.net/de/go/multimessenger>>

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