I was hoping I could get some clarification on how SAS 9.4 handles the semivariance estimate for Lag 0 in the semivariogram model fitting process. A visual inspection of various fitted variogram curves for my data suggest that SAS is either ignoring or weighting down the importance of the Lag 0 semivariance estimates in fitting the semivariogram curves. Given that Lag 0 generally contains substantially fewer data points than the other lags under consideration, this seems reasonable, but I have been unable to find a description in the SAS User's Guide that details exactly how this process is handled.   Am I interpreting The VARIOGRAM Procedure - Quality of Fit page correctly to mean that Lag 0 is ignored in the fitting process when it says:  "the weights wi2 are taken at i = 1, . . . , k." or am I missing something in the documentation elsewhere?   I am using this general code form for my model fitting: PROC VARIOGRAM DATA = LIB.DATA PLOTS(ONLY) = FIT; COMPUTE AUTOCORRELATION LAGD = x MAXLAG = y CL ROBUST AUTOCORR(WEIGHTS = DISTANCE (NORMAL) ; COORDINATES XC = X_CORD YC = Y_CORD; MODEL FORM = AUTO (MLIST = (EXP, SPH, GAU, SHE) NEST = 1) CL FIT = ROBUST CHOOSE = (STATUS SSE); VAR RESID; RUN;   ... View more

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Our Federal client wants us to provide SBOM from SAS for the SAS Viya 4 software.  This seems to be a new requirement mandated by the current administration (Executive office of the President - Office of Management and Budget).  The SBOM has to be generated in a specific format using specific tools.  Our client is insisting that SBOM report be presented by SAS before we are cleared to start deployment of SAS Viya 4.     SAS presented an SBOM that was rejected by our client security team because it did not meet the executive order mandate.  This has become a showstopper for us.  SAS said they have not received this request from any of their SAS Viya 4 clients.  We just want to know if any Accenture teams are deploying SAS Viya 4 for any Federal clients and how they have handled this SBOM request from your clients as a Federal mandate   Thanks. Harry ... View more

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