The COUNTREG Procedure
- Overview
- Getting Started
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Syntax
Functional SummaryPROC COUNTREG StatementBAYES StatementBOUNDS StatementBY StatementCLASS StatementDISPMODEL StatementFREQ StatementINIT StatementMODEL StatementNLOPTIONS StatementOUTPUT StatementPERFORMANCE StatementPRIOR StatementRESTRICT StatementSCORE StatementSHOW StatementSPATIALDISPEFFECTS StatementSPATIALEFFECTS StatementSPATIALID StatementSPATIALZEROEFFECTS StatementSTORE StatementTEST StatementWEIGHT StatementZEROMODEL Statement -
DetailsSpecification of RegressorsMissing ValuesPoisson RegressionConway-Maxwell-Poisson RegressionNegative Binomial RegressionZero-Inflated Count Regression OverviewZero-Inflated Poisson RegressionZero-Inflated Conway-Maxwell-Poisson RegressionZero-Inflated Negative Binomial RegressionSpatial Lag of X ModelVariable SelectionPanel Data AnalysisBY Groups and Scoring with an Item StoreParameter Naming Conventions for the RESTRICT, TEST, BOUNDS, and INIT StatementsComputational ResourcesNonlinear Optimization OptionsCovariance Matrix TypesDisplayed OutputBayesian AnalysisPrior DistributionsAutomated MCMC AlgorithmMarginal LikelihoodOUTPUT OUT= Data SetOUTEST= Data SetODS Table NamesODS Graphics
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Examples
- References
INIT Statement
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INIT initvalue1 <, initvalue2 …>;
The INIT statement sets initial values for parameters in the optimization.
Each initvalue is written as a parameter or parameter list, followed by an optional equal sign (=), followed by a number:
parameter <=> number
Parameter names are as shown in the Parameter column of the "Parameter Estimates" table. Please refer to the section Parameter Naming Conventions for the RESTRICT, TEST, BOUNDS, and INIT Statements for more information on how parameters are named in the INIT statement.
By default, initial values are determined by OLS regression. Initial values can be displayed with the ITPRINT option in the PROC statement.
If you also specify the BAYES statement, the INIT statement also initializes the Markov chain Monte Carlo (MCMC) algorithm. In particular, the INIT statement does one of the following:
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initializes the tuning phase (this also includes the PROPCOV= option)
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initializes the sampling phase, if there is no tuning phase