From: Markus Mottl <markus@oefai.at>
To: "Yaron M. Minsky" <yminsky@CS.Cornell.EDU>
Cc: Tibor Simko <tibor.simko@cern.ch>, caml-list@inria.fr
Subject: Re: [Caml-list] intersecting huge integer sets
Date: Tue, 27 Aug 2002 14:12:43 +0200 [thread overview]
Message-ID: <20020827121243.GC32176@fichte.ai.univie.ac.at> (raw)
In-Reply-To: <1030450016.24909.45.camel@dragonfly.localdomain>
On Tue, 27 Aug 2002, Yaron M. Minsky wrote:
> If the sets are really as dense as you say they are (on the order of 50%
> of all possible elements), then the fastest thing is probably just to
> use a bool array. Such an approach would require 3 passes: one to set
> all the elements of the array to false. One to mark the elements
> corresponding to set 1 to true, and then one pass over set 2 to see
> which of its elements are shared by 1.
If this is what is needed, better take bit vectors ("bitv" - also on
Jean-Christophe's page).
Regards,
Markus Mottl
--
Markus Mottl markus@oefai.at
Austrian Research Institute
for Artificial Intelligence http://www.oefai.at/~markus
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next prev parent reply other threads:[~2002-08-27 12:12 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-27 11:20 Tibor Simko
2002-08-27 11:52 ` Markus Mottl
2002-08-27 12:09 ` Diego Olivier Fernandez Pons
2002-08-27 12:06 ` Yaron M. Minsky
2002-08-27 12:12 ` Markus Mottl [this message]
2002-08-28 12:29 ` Tibor Simko
2002-08-29 10:13 ` Diego Olivier Fernandez Pons
2002-08-29 11:33 ` [Caml-list] barre dans le filtrage de motifs Diego Olivier Fernandez Pons
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