http://groups.yahoo.com/group/new_ai_geostats/ AI-GEOSTATS: Spatial statistics and GIS Tue, 16 May 2006 08:18:30 GMT Gregoire Dubois http://groups.yahoo.com/group/new_ai_geostats/message/2521 http://groups.yahoo.com/group/new_ai_geostats/message/2521 Dear all, For various technical reasons, AI-GEOSTATS has to move again after 2 years running with the SYMPA mailing list server from the University of Tue, 16 May 2006 08:17:43 GMT Gregoire Dubois http://groups.yahoo.com/group/new_ai_geostats/message/2520 http://groups.yahoo.com/group/new_ai_geostats/message/2520 Dear all, I'm currently trying to figure out what is going on with the list server of ai-geostats: 90% of the addresses registered are bouncing and I received Fri, 05 May 2006 09:47:18 GMT Reza Nazarian http://groups.yahoo.com/group/new_ai_geostats/message/2519 http://groups.yahoo.com/group/new_ai_geostats/message/2519 Dear Experts I have a problem to solve. I want to create a porosity map or a porosity 3D grid or volume out of some borehole information. I am using methods Fri, 05 May 2006 09:46:51 GMT seba http://groups.yahoo.com/group/new_ai_geostats/message/2518 http://groups.yahoo.com/group/new_ai_geostats/message/2518 dear Reza Nazarian I think that there are many things to say about this topic.....(for example the idea to use a gaussian distribution for porosity should be Tue, 02 May 2006 10:07:16 GMT Alexandre Boucher http://groups.yahoo.com/group/new_ai_geostats/message/2517 http://groups.yahoo.com/group/new_ai_geostats/message/2517 Dear ai-geostat community, A new version (1.4) of the open source Stanford Geostatiscal Earth Modeling Software, SGeMS, has now been released. You may Tue, 02 May 2006 10:06:46 GMT Collier, Perry (TS) http://groups.yahoo.com/group/new_ai_geostats/message/2516 http://groups.yahoo.com/group/new_ai_geostats/message/2516 Ps: Found a good start in THE KRIGING OXYMORON: A CONDITIONALLY UNBIASED AND ACCURATE PREDICTOR (2nd EDITION) by Isaaks, but the maths made me see stars... ... Tue, 02 May 2006 10:06:34 GMT Collier, Perry (TS) http://groups.yahoo.com/group/new_ai_geostats/message/2515 http://groups.yahoo.com/group/new_ai_geostats/message/2515 Hi List Maybe this topic has been done to death, but I'd like to poke the carcass if I may... Edward Isaaks via AI (15 February 2006) said of a paper by Van et Tue, 02 May 2006 10:06:16 GMT Mahdi Osman http://groups.yahoo.com/group/new_ai_geostats/message/2514 http://groups.yahoo.com/group/new_ai_geostats/message/2514 Raimon Tolosana-Delgado, Many thanks. This was very helpful indeed. Regards Mahdi ... -- ... Mahdi Osman (PhD) E-mail: m_osm@... ... Echte DSL-Flatrate Tue, 02 May 2006 10:05:42 GMT Raimon Tolosana http://groups.yahoo.com/group/new_ai_geostats/message/2513 http://groups.yahoo.com/group/new_ai_geostats/message/2513 Dear Mahdi Quickly said, you cannot compare both nuggets, because they do not share units... (well, the logarithmic one may be considered to have no units, but Thu, 27 Apr 2006 12:22:30 GMT Isobel Clark http://groups.yahoo.com/group/new_ai_geostats/message/2512 http://groups.yahoo.com/group/new_ai_geostats/message/2512 Hi Prior to 1983, most people used cross validation to check whether their kriging methods were working or to compare one kriging method with another. After Thu, 27 Apr 2006 12:18:28 GMT Adrián Martínez Vargas http://groups.yahoo.com/group/new_ai_geostats/message/2511 http://groups.yahoo.com/group/new_ai_geostats/message/2511 see Isatis examples in www.geovariances.fr Adrian Martínez Vargas Departamento de Geología ISMM, Las Coloradas s/n Moa, Holguín Cuba CP 83329 ... From: Thu, 27 Apr 2006 12:17:37 GMT Colin Badenhorst http://groups.yahoo.com/group/new_ai_geostats/message/2510 http://groups.yahoo.com/group/new_ai_geostats/message/2510 Hi List, Can anyone recommend some references to a mine geologist looking for an introduction to Uniform Conditioning? I'm especially interested in it's Thu, 27 Apr 2006 12:16:52 GMT M. Nur Heriawan http://groups.yahoo.com/group/new_ai_geostats/message/2509 http://groups.yahoo.com/group/new_ai_geostats/message/2509 Dear everyone, One of my colleague asked me about the mathematical equation of cross-validation method (leave-one-out method), and I said that it depends on Thu, 27 Apr 2006 12:16:20 GMT Mahdi Osman http://groups.yahoo.com/group/new_ai_geostats/message/2508 http://groups.yahoo.com/group/new_ai_geostats/message/2508 Dear Isobel Clark, Dear List, I have your posting regrding cross validation. Yesterday and this morning I had similar, but not identical, problems. So I was Fri, 21 Apr 2006 08:04:37 GMT Rajni Gaur http://groups.yahoo.com/group/new_ai_geostats/message/2507 http://groups.yahoo.com/group/new_ai_geostats/message/2507 Respected List, I have the correlation curves for two different dataset of the same region, at two different timings. I have two equations y=m1x + c1 and