From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Original-To: caml-list@yquem.inria.fr Delivered-To: caml-list@yquem.inria.fr Received: from nez-perce.inria.fr (nez-perce.inria.fr [192.93.2.78]) by yquem.inria.fr (Postfix) with ESMTP id 9A878BB83 for ; Tue, 4 Jul 2006 01:59:33 +0200 (CEST) Received: from wx-out-0102.google.com (wx-out-0102.google.com [66.249.82.205]) by nez-perce.inria.fr (8.13.6/8.13.6) with ESMTP id k63NxXth031407 for ; Tue, 4 Jul 2006 01:59:34 +0200 Received: by wx-out-0102.google.com with SMTP id s12so605910wxc for ; Mon, 03 Jul 2006 16:59:32 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=M2vKFnN+QuRIBMZ7CzgMzgUA+Jtr6pAJxfug9rpgtZPqzpRqRAezH9V+Nk1Lc/YsbxzoCeZO/8Fx6QG+nqX4tHloQGIeIGXUoYbbe3mMOebLsIrFuPgTq+rgOw/+dYCAkp/PjasZwcncGXPIq2qoCMaEQuDWnaSgWJBPaYcJgzE= Received: by 10.70.67.4 with SMTP id p4mr6627032wxa; Mon, 03 Jul 2006 16:59:32 -0700 (PDT) Received: by 10.70.55.19 with HTTP; Mon, 3 Jul 2006 16:59:32 -0700 (PDT) Message-ID: Date: Mon, 3 Jul 2006 19:59:32 -0400 From: "Markus Mottl" To: "Andreas Biegert" Subject: Re: [Caml-list] Package with multidimensional AND sparse matrices? Cc: caml-list@yquem.inria.fr In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: X-j-chkmail-Score: MSGID : 44A9AF66.000 on nez-perce : j-chkmail score : X : 0/20 1 X-Miltered: at nez-perce with ID 44A9AF66.000 by Joe's j-chkmail (http://j-chkmail.ensmp.fr)! X-Spam: no; 0.00; markus:01 mottl:01 markus:01 mottl:01 matrices:01 implements:01 matrices:01 ocaml:01 wrote:01 caml-list:01 andreas:01 andreas:01 data:02 represented:02 fortran:02 X-Spam-Checker-Version: SpamAssassin 3.0.3 (2005-04-27) on yquem.inria.fr X-Spam-Level: X-Spam-Status: No, score=0.9 required=5.0 tests=DNS_FROM_RFC_ABUSE,INFO_TLD, RCVD_BY_IP autolearn=disabled version=3.0.3 On 7/3/06, Andreas Biegert wrote: > Does anybody know a package that implements multidimensional AND > sparse matrices? In case there is no such package, would it be very > hard to write one by myself? I don't know of any OCaml-libraries implementing datastructures and algorithms for sparse tensors. You haven't mentioned anything about the kind of algorithms you want to implement. Maybe the problem can be represented differently so that you can use matrices without too many conceptual hassles. Otherwise I'd first look around for some Fortran libraries that could be interfaced, because implementing stable and efficient numerical algorithms, especially given this kind of data, is pretty hard. Regards, Markus -- Markus Mottl http://www.ocaml.info markus.mottl@gmail.com