I believe that due to memory management the size of biggest possible matrix can change. But I probably am not the persou who can explain it correctly.
Petr On 2 Mar 2007 at 14:40, Bruno C. wrote: Date sent: Fri, 2 Mar 2007 14:40:18 +0100 From: "Bruno C." <[EMAIL PROTECTED]> To: "petr.pikal" <[EMAIL PROTECTED]> Copies to: r-help <[EMAIL PROTECTED]> Subject: Re: [R] Reformulated matrices dimensions limitation problem > bigml is for generalized regression model. I need to use lars ans svm. > Anway I am perfectly able to train my model: my training matrix is not > so big. The big matrix is the test one then I can split it by rows > into several matrices without affecting the results. The point is that > I wanted to split it in an elegant way, mainimizing the needed > submatrices wrt memory. But I have the impression I am asking R too > much :D > > > > Did you consider biglm package. I did not use it myself but from > > its description it can be used for linear models on objects that do > > not fit into memory. > > > > HTH > > Petr > > > > > > On 2 Mar 2007 at 13:12, Bruno C. wrote: > > > > Date sent: Fri, 2 Mar 2007 13:12:07 +0100 > > From: "Bruno C." <[EMAIL PROTECTED]> > > To: "petr.pikal" <[EMAIL PROTECTED]> > > Copies to: r-help <[EMAIL PROTECTED]> > > Subject: Re: [R] Reformulated matrices dimensions > > limitation problem > > > > > You are right. and I am aware of that. > > > > > > This is what I need to do: > > > load a regression model > > > load the bigget posible matrix > > > do prediction on this matrix > > > > > > the first and 3rd step will not need to much memory... > > > > > > and I would really appreciate this degree of introspection from R: > > > it would be great if there would be a package that could simulate > > > the amount of memory needed from a process But I don't pretend > > > that much, this is why I am asking only about a function able to > > > build a matrix matrix, with size based on memory available... > > > > > > > > > > > > > > > > Hi > > > > > > > > creating a biggest possible matrix does not automaticaly mean > > > > you can do some computation with it. > > > > > > > > So the size will depend partly on what you want to do with it. I > > > > presume that you do not want only to create a matrix just for > > > > pleasure to be able to. > > > > > > > > Cheers > > > > Petr > > > > > > > > > > > > On 2 Mar 2007 at 10:15, Bruno C. wrote: > > > > > > > > Date sent: Fri, 2 Mar 2007 10:15:33 +0100 > > > > From: "Bruno C." <[EMAIL PROTECTED]> > > > > To: "r-help" <[EMAIL PROTECTED]> > > > > Subject: [R] Reformulated matrices dimensions > > > > limitation problem > > > > > > > > > First I wanted to thank both Marc Schwartz Greg Snow and for > > > > > their reply. > > > > > > > > > > Then I needed to add a level of complexity to the problem. I > > > > > would be able to create the biggest possible matrix. > > > > > > > > > > In other way does it exist a method to ask smthing like the > > > > > following : > > > > > > > > > > max number of rows for a matrix if column=x? > > > > > > > > > > Thank you > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ------------------------------------------------------ > > > > > Passa a Infostrada. ADSL e Telefono senza limiti e senza > > > > > canone Telecom http://click.libero.it/infostrada2marz07 > > > > > > > > > > ______________________________________________ > > > > > [email protected] mailing list > > > > > https://stat.ethz.ch/mailman/listinfo/r-help > > > > > PLEASE do read the posting guide > > > > > http://www.R-project.org/posting-guide.html and provide > > > > > commented, minimal, self-contained, reproducible code. > > > > > > > > Petr Pikal > > > > [EMAIL PROTECTED] > > > > > > > > > > > > > > > > > ------------------------------------------------------ > > > Passa a Infostrada. ADSL e Telefono senza limiti e senza canone > > > Telecom http://click.libero.it/infostrada2marz07 > > > > > > ______________________________________________ > > > [email protected] mailing list > > > https://stat.ethz.ch/mailman/listinfo/r-help > > > PLEASE do read the posting guide > > > http://www.R-project.org/posting-guide.html and provide commented, > > > minimal, self-contained, reproducible code. > > > > Petr Pikal > > [EMAIL PROTECTED] > > > > > > > ------------------------------------------------------ > Passa a Infostrada. ADSL e Telefono senza limiti e senza canone > Telecom http://click.libero.it/infostrada2marz07 > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html and provide commented, > minimal, self-contained, reproducible code. Petr Pikal [EMAIL PROTECTED] ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
