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2521

[ai-geostats] Move of the list to Majordomo@jrc.it

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
    Gregoire Dubois
    May 16, 2006
    #2521
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    2520

    [ai-geostats] problems with mailing list

    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
      Gregoire Dubois
      May 16, 2006
      #2520
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      2519

      [ai-geostats] Need your advise

      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
        Reza Nazarian
        May 5, 2006
        #2519
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        2518

        Re: [ai-geostats] Need your advise

        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
          seba
          May 5, 2006
          #2518
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          2517

          [ai-geostats] SGeMS 1.4, a new release

          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
            Alexandre Boucher
            May 2, 2006
            #2517
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            2516

            [ai-geostats] RE: Search neighbourhood, conditional bias, etc

            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... ...
              Collier, Perry (TS)
              May 2, 2006
              #2516
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              2515

              [ai-geostats] Search neighbourhood, conditional bias, etc

              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
                Collier, Perry (TS)
                May 2, 2006
                #2515
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                2514

                Re: [ai-geostats] Re: about cross-validation

                Raimon Tolosana-Delgado, Many thanks. This was very helpful indeed. Regards Mahdi ... -- ... Mahdi Osman (PhD) E-mail: m_osm@... ... Echte DSL-Flatrate
                  Mahdi Osman
                  May 2, 2006
                  #2514
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                  2513

                  Re: [ai-geostats] Re: about cross-validation

                  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
                    Raimon Tolosana
                    May 2, 2006
                    #2513
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                    2512

                    [ai-geostats] Re: about cross-validation

                    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
                      Isobel Clark
                      Apr 27, 2006
                      #2512
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                      2511

                      Re: [ai-geostats] Uniform Conditioning Info.

                      see Isatis examples in www.geovariances.fr Adrian Martínez Vargas Departamento de Geología ISMM, Las Coloradas s/n Moa, Holguín Cuba CP 83329 ... From:
                        Adrián Martínez Vargas
                        Apr 27, 2006
                        #2511
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                        2510

                        [ai-geostats] Uniform Conditioning Info.

                        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
                          Colin Badenhorst
                          Apr 27, 2006
                          #2510
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                          2509

                          [ai-geostats] about cross-validation

                          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
                            M. Nur Heriawan
                            Apr 27, 2006
                            #2509
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                            2508

                            Re: [ai-geostats] Re: about cross-validation

                            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
                              Mahdi Osman
                              Apr 27, 2006
                              #2508
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                              2507

                              [ai-geostats] uncertainty

                              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
                                Rajni Gaur
                                Apr 21, 2006
                                #2507
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