From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (from majordomo@localhost) by pauillac.inria.fr (8.7.6/8.7.3) id NAA22979; Tue, 27 Aug 2002 13:52:21 +0200 (MET DST) X-Authentication-Warning: pauillac.inria.fr: majordomo set sender to owner-caml-list@pauillac.inria.fr using -f Received: from nez-perce.inria.fr (nez-perce.inria.fr [192.93.2.78]) by pauillac.inria.fr (8.7.6/8.7.3) with ESMTP id NAA22899 for ; Tue, 27 Aug 2002 13:52:20 +0200 (MET DST) Received: from fichte.ai.univie.ac.at (fichte.ai.univie.ac.at [131.130.174.156]) by nez-perce.inria.fr (8.11.1/8.11.1) with ESMTP id g7RBqJn29534 for ; Tue, 27 Aug 2002 13:52:19 +0200 (MET DST) Received: (from markus@localhost) by fichte.ai.univie.ac.at (8.9.3/8.9.3/Debian 8.9.3-21) id NAA00530; Tue, 27 Aug 2002 13:52:15 +0200 Date: Tue, 27 Aug 2002 13:52:15 +0200 From: Markus Mottl To: Tibor Simko Cc: caml-list@inria.fr Subject: Re: [Caml-list] intersecting huge integer sets Message-ID: <20020827115215.GB32176@fichte.ai.univie.ac.at> Mail-Followup-To: Tibor Simko , caml-list@inria.fr References: <87n0r835w9.fsf@pcdh91.cern.ch> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87n0r835w9.fsf@pcdh91.cern.ch> User-Agent: Mutt/1.4i Organization: Austrian Research Institute for Artificial Intelligence Sender: owner-caml-list@pauillac.inria.fr Precedence: bulk Tibor Simko schrieb am Dienstag, den 27. August 2002: > I wonder how to improve OCaml performance in this special case. > Is there a better suited OCaml data structure to simulate huge hashed > sets of integers rather than by using OCaml's native Hashtbl? Yes, you'll probably want Patricia trees. You can get them from Jean-Christophe Filliatre's page: http://www.lri.fr/~filliatr/software.en.html They support very fast set operations (union, difference, intersection). Best regards, Markus Mottl -- Markus Mottl markus@oefai.at Austrian Research Institute for Artificial Intelligence http://www.oefai.at/~markus ------------------- To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ Beginner's list: http://groups.yahoo.com/group/ocaml_beginners