Thank you everybody for your replies. I agree OR is not that important. I thought Nutch uses 100% of Lucene functionality including its query parser, which is very powerful.

Michael



From: Doug Cutting <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: Re: [Nutch-dev] AND/OR/NOT do not work?
Date: Mon, 20 Dec 2004 10:59:54 -0800

Michael Sashnikov wrote:
I believe Lucene do support AND/OR/NOT and other keywords. Does anybody know
why Nutch does not? Without this feature Nutch is not too useful.

Nutch currently supports required terms and prohibited terms (equivalent to AND and NOT). That is what most people use. Google did not add support for OR until late 2000, when they were already the most popular search engine. So clearly one can have a useful search engine without OR!


http://web.archive.org/web/20001019091923/http://www.google.com/help/basics.html#and

As others have pointed out, it would not be too hard to add support for OR to Nutch, and someday, no doubt, someone will.

Doug


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