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From: Hiemstra, P.H. \(Paul\) <paul.hiemstra@tn...>  20060623 07:12:35
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Hey, =20 Is=20there=20an=20article=20or=20something=20out=20there=20describing=20th= e=20workings=20of FILTERSIM.=20Especially=20what=20all=20the=20parameters=20do=20and=20how=20= the=20algorithm works. =20 Greetings, =20 Paul=20Hiemstra This=20email=20and=20its=20contents=20are=20subject=20to=20the=20DISCLAIM= ER=20at=20http://www.tno.nl/disclaimer/email.html 
From: Max Gregoire <max.gregoire@ul...>  20061107 15:19:09

From: Samuel Verstraete <samuel.verstraete@gm...>  20061107 15:46:38

SGEMS is written in C++ SIS is written in fortran... SGEMS is taking *all* simulated nodes in the kriging matrix while SIS can limit this... I think those should explain the main differences with the latter being the most important cheers On Tue, 7 Nov 2006 16:18:49 +0100 "Max Gregoire" <max.gregoire@...> wrote: > Dear list, >=20 > =20 >=20 > The Direct Sequential Simulation algorithm on SGeMS runs slower than > SIS on my computer. When I read the article of Amilcar Soares > (Mathematical Geology, 2001) I really don=92t understand why SIS could > run faster than DSS for the same sample set and simulation grid. Is > it normal? Is there any reason for this? >=20 > =20 >=20 > Thanks for your response. >=20 > =20 >=20 > Regards >=20 > =20 >=20 > Max Gregoire >=20 >=20 > Batiment B52 >=20 > Bureau 1/414 >=20 > Chemin des chevreuils, 1 >=20 > B4000 Li=E8ge (SartTilman) >=20 > Tel: +32 4 366 9525 >=20 > Mobile: +32 498 387883 >=20 > Email adress: Max.Gregoire@... >=20 > =20 >=20 > GeMMe  G=E9nie Min=E9ral, Mat=E9riaux & Environnement >=20 > =20 >=20 > =20 >=20 > =20 >=20 > =20 >=20 > =20 >=20 > UNIVERSITE DE LIEGE >=20 > =20 >=20 > =20 >=20 >=20 
From: Alexandre Boucher <aboucher@pa...>  20061107 19:23:40

<html> <body> Hi Max<br><br> DSSIM is slow due to implementation issue. There is an extra step in the Soares' version DSSIM, that is the correction of the conditional distribution as obtained from the sampling of the marginal distribution sampled with a Gaussianshaped function. This correction has to be done to ensure that the mean of the "backtransformed" ccdf identify the simple kriging mean. This is done by discretizing the ccdf into a number of bins and computing the mean., and then applying the correction. That takes time. The currrent implementation is not optimized in that regard. <br><br> In addition, median IK will be faster, because you only solves one kriging system, the speed of full IK will depend on how many indicators you are using. I will look at the code again where improvements can be made for DSSIM. It is also planned to implement the Deustch's approach of DSSIM.<br><br> Alex<br> p.s. Just to clarify: SGEMS is taking all simulated nodes, <b>within the search neighborhood</b>, in the kriging matrix<br><br> At 07:46 AM 11/7/2006, you wrote:<br><br> <blockquote type=3Dcite class=3Dcite cite=3D"">SGEMS is written in C++<br> SIS is written in fortran...<br><br> SGEMS is taking *all* simulated nodes in the kriging matrix while SIS<br> can limit this...<br><br> I think those should explain the main differences with the latter<br> being the most important<br><br> cheers<br><br> <br><br> On Tue, 7 Nov 2006 16:18:49 +0100<br> "Max Gregoire" <max.gregoire@...> wrote:<br><br> > Dear list,<br> > <br> > <br> > <br> > The Direct Sequential Simulation algorithm on SGeMS runs slower than<br> > SIS on my computer. When I read the article of Amilcar Soares<br> > (Mathematical Geology, 2001) I really don=92t understand why SIS could<br> > run faster than DSS for the same sample set and simulation grid. Is<br> > it normal? Is there any reason for this?<br> > <br> > <br> > <br> > Thanks for your response.<br> > <br> > <br> > <br> > Regards<br> > <br> > <br> > <br> > Max Gregoire<br> > <br> > <br> > Batiment B52<br> > <br> > Bureau 1/414<br> > <br> > Chemin des chevreuils, 1<br> > <br> > B4000 Li=E8ge (SartTilman)<br> > <br> > Tel: +32 4 366 9525<br> > <br> > Mobile: +32 498 387883<br> > <br> > Email adress: Max.Gregoire@...<br> > <br> > = <br> > <br> > GeMMe  G=E9nie Min=E9ral, Mat=E9riaux & Environnement<br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > <br> > UNIVERSITE DE LIEGE<br> > <br> > <br> > <br> > <br> > <br> > <br><br> <br><br> <br= > Using Tomcat but need to do more? Need to support web services, security?<br> Get stuff done quickly with preintegrated technology to make your job easier<br> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo<br> <a= href=3D"http://sel.asus.falkag.net/sel?cmd=3Dlnk&kid=3D120709&bid= =3D263057&dat=3D121642" eudora=3D"autourl"> http://sel.asus.falkag.net/sel?cmd=3Dlnk&kid=3D120709&bid=3D263057&= amp;dat=3D121642</a> <br> _______________________________________________<br> Sgemsusers mailing list<br> Sgemsusers@...<br> <a href=3D"https://lists.sourceforge.net/lists/listinfo/sgemsusers"; eudora= =3D"autourl"> https://lists.sourceforge.net/lists/listinfo/sgemsusers</a></blockquote>; </body> </html> 
From: Samuel Verstraete <samuel.verstraete@ug...>  20061107 15:41:08

SGEMS is written in C++ SIS is written in fortran... SGEMS is taking *all* simulated nodes in the kriging matrix while SIS can limit this... I think those should explain the main differences with the latter being the most important cheers On Tue, 7 Nov 2006 16:18:49 +0100 "Max Gregoire" <max.gregoire@...> wrote: > Dear list, >=20 > =20 >=20 > The Direct Sequential Simulation algorithm on SGeMS runs slower than > SIS on my computer. When I read the article of Amilcar Soares > (Mathematical Geology, 2001) I really don=92t understand why SIS could > run faster than DSS for the same sample set and simulation grid. Is > it normal? Is there any reason for this? >=20 > =20 >=20 > Thanks for your response. >=20 > =20 >=20 > Regards >=20 > =20 >=20 > Max Gregoire >=20 >=20 > Batiment B52 >=20 > Bureau 1/414 >=20 > Chemin des chevreuils, 1 >=20 > B4000 Li=E8ge (SartTilman) >=20 > Tel: +32 4 366 9525 >=20 > Mobile: +32 498 387883 >=20 > Email adress: Max.Gregoire@... >=20 > =20 >=20 > GeMMe  G=E9nie Min=E9ral, Mat=E9riaux & Environnement >=20 > =20 >=20 > =20 >=20 > =20 >=20 > =20 >=20 > =20 >=20 > UNIVERSITE DE LIEGE >=20 > =20 >=20 > =20 >=20 >=20 =20 Research group Soil Spatial Inventory Techniques Dept. Soil Management and Soil Care Faculty of Bioscience Engineering Ghent University Department of Soil Management and Soil Care Coupure Links 653  Block B 9000 Ghent  Belgium Telephone +32(0)9 264.60.42 Fax +32(0)9 264.62.47 Email samuel.verstraete@... http://soilman.ugent.be/orbit 
From: Busschers, F. \(Freek\) <freek.busschers@tn...>  20070319 17:46:25
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Hello, =20 I=20would=20like=20to=20perform=20SISM=20actions=20within=20an=20irregular= =20Cartesian=20grid (undulating=20top=20and=20base).=20Does=20anyone=20know=20how=20to=20do=20= this=20or=20do=20I=20have to=20wait=20for=20the=20new=20SGEMS=20version....? =20 Freek=20Busschers,=20Netherlands=20 This=20email=20and=20its=20contents=20are=20subject=20to=20the=20DISCLAIM= ER=20at=20http://www.tno.nl/disclaimer/email.html 
From: nico remy <nico97492@gm...>  20070323 23:19:24
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No, you would have to do the stratigraphic transformation yourself, then import the tranformed grid in sgems. Another solution is to apply sisim on a pointset instead of a cartesian grid. On 3/19/07, Busschers, F. (Freek) <freek.busschers@...> wrote: > > Hello, > > > > I would like to perform SISM actions within an irregular Cartesian grid > (undulating top and base). Does anyone know how to do this or do I have t= o > wait for the new SGEMS version=85.? > > > > Freek Busschers, Netherlands > > This email and its contents are subject to the DISCLAIMER at > http://www.tno.nl/disclaimer/email.html > >  > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share > your > opinions on IT & business topics through brief surveysand earn cash > http://www.techsay.com/default.php?page=3Djoin.php&p=3Dsourceforge&CID=3D= DEVDEV > _______________________________________________ > Sgemsusers mailing list > Sgemsusers@... > https://lists.sourceforge.net/lists/listinfo/sgemsusers > > 
From: Max Gregoire <max.gregoire@ul...>  20071109 16:26:05
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Dear list, I encounter a little problem using SK estimation algorithm. I obtain negative estimated values since all the conditioning data are positive. An interpolation must not create new extrema. The number of minimum conditioning data is 3. These negative values could be due to screeening effect or do they come from numerical instability? Thanks for your response M.G. 
From: Pierre Goovaerts <Goovaerts@TerraSeer.com>  20071109 16:42:57

Hi Gregoire, =20 One of the properties of the kriging estimator is its nonconvexity, which allows estimated values to fall outside the range of observed valu= es. One drawback is the risk of getting unrealistic estimates, such as negat= ive concentration estimates. My experience is that negative kriging weights, hence potentially negative kriging estimates, mainly happen when the nug= get=20 effect is very small, enhancing the impact of the screening effect. =20 Cheers, =20 Pierre =20 Pierre Goovaerts Chief Scientist at BioMedware Inc. Courtesy Associate Professor, University of Florida President of PGeostat LLC =20 Office address:=20 516 North State Street Ann Arbor, MI 48104 Voice: (734) 9131098 (ext. 8) Fax: (734) 9132201=20 http://home.comcast.net/~goovaerts/=20 ________________________________ From: sgemsusersbounces@... on behalf of Max Gregoire Sent: Fri 11/9/2007 11:25 AM To: sgemsusers@... Subject: [Sgemsusers] (no subject) Dear list, =20 I encounter a little problem using SK estimation algorithm. I obtain neg= ative estimated values since all the conditioning data are positive. An= interpolation must not create new extrema. The number of minimum condit= ioning data is 3. These negative values could be due to screeening effec= t or do they come from numerical instability? =20 Thanks for your response =20 =20 M.G. 
From: Sami Elkurdy <samik54@ya...>  20101026 18:48:30
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http://www.rmlo.qettt.com 
From: M. Nur Heriawan <mn_heriawan@ya...>  20120618 09:41:30
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http://www.randidestefano.com/wordpress/wpcontent/themes/lifestyle/glkrgw.html?zoa=dhyj.jdhza&zazar=ze.zaif&zfm=hdwz 
From: M. Nur Heriawan <mn_heriawan@ya...>  20120620 03:09:26
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http://www.spectrumfitnessandwellness.com/wpcontent/themes/awake/mglgex.html?efm=fza.dhega&jtgi=zam.dhb&yuyp=fnsm 
From: Sajid Khan <sajid.khan0604@gm...>  20131022 19:30:16
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dear sir, can we add new tools in SGEMS software.if yes then i need that you just helped me out. i am going to add a new tool by the name of mine planing and designing. 
From: Alfred Stach <frdstach@am...>  20060623 07:45:33

Dear Paul, I think that proper reference for FILTERSIM is paper by Zhang et al: Zhang, T., Switzer, P., and Journel, A., 2006: FilterBased Classification of Training Image for Spatial Simulation. Mathematical Geology, Vol. 38, No. 1, January 2006, 6380. I hope it helps. Best wishes! Alfred ************************************************** Dr. Alfred Stach Institute of Paleogeography and Geoecology Adam Mickiewicz University Dziegielowa 27, 61680 Poznan, Poland voice: +4861 8296179, fax: +4861 8296271 Email: frdstach@... **************************************************  Original Message  From: Hiemstra, P.H. (Paul) To: sgemsusers@... Sent: Friday, June 23, 2006 9:12 AM Subject: [Sgemsusers] (no subject) Hey, Is there an article or something out there describing the workings of FILTERSIM. Especially what all the parameters do and how the algorithm works. Greetings, Paul Hiemstra This email and its contents are subject to the DISCLAIMER at http://www.tno.nl/disclaimer/email.html Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with preintegrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.asus.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Sgemsusers mailing list Sgemsusers@... https://lists.sourceforge.net/lists/listinfo/sgemsusers 