topic Re: Proc IRT: estimate latent trait by passing KNOWN item parameters in Statistical Procedures https://communities.sas.com/t5/Statistical-Procedures/Proc-IRT-estimate-latent-trait-by-passing-KNOWN-item-parameters/m-p/297755#M15846 <P>If you already have a fitted model, then you can use the INMODEL= option to specify a SAS data set that contains the model parameters.&nbsp;You can use the SCORE suboption to score new subjects without refitting the model.&nbsp;</P> <P>&nbsp;</P> <P>You can also use the INMODEL= option to provide initial values for parameter estimates when fitting a model.&nbsp;</P> <P>For details, see <A href="http://support.sas.com/documentation/cdl/en/statug/68162/HTML/default/viewer.htm#statug_irt_syntax01.htm" target="_self">the documentation for the PROC IRT statement.</A></P> Mon, 12 Sep 2016 13:58:35 GMT Rick_SAS 2016-09-12T13:58:35Z Proc IRT: estimate latent trait by passing KNOWN item parameters https://communities.sas.com/t5/Statistical-Procedures/Proc-IRT-estimate-latent-trait-by-passing-KNOWN-item-parameters/m-p/280443#M14779 <P>Hello, I am wondering if it possible (if so, how) to pass already known item parameters to SAS to estimate latent traits. Thanks!</P> Mon, 27 Jun 2016 15:04:16 GMT https://communities.sas.com/t5/Statistical-Procedures/Proc-IRT-estimate-latent-trait-by-passing-KNOWN-item-parameters/m-p/280443#M14779 Audrey123 2016-06-27T15:04:16Z Re: Proc IRT: estimate latent trait by passing KNOWN item parameters https://communities.sas.com/t5/Statistical-Procedures/Proc-IRT-estimate-latent-trait-by-passing-KNOWN-item-parameters/m-p/297755#M15846 <P>If you already have a fitted model, then you can use the INMODEL= option to specify a SAS data set that contains the model parameters.&nbsp;You can use the SCORE suboption to score new subjects without refitting the model.&nbsp;</P> <P>&nbsp;</P> <P>You can also use the INMODEL= option to provide initial values for parameter estimates when fitting a model.&nbsp;</P> <P>For details, see <A href="http://support.sas.com/documentation/cdl/en/statug/68162/HTML/default/viewer.htm#statug_irt_syntax01.htm" target="_self">the documentation for the PROC IRT statement.</A></P> Mon, 12 Sep 2016 13:58:35 GMT https://communities.sas.com/t5/Statistical-Procedures/Proc-IRT-estimate-latent-trait-by-passing-KNOWN-item-parameters/m-p/297755#M15846 Rick_SAS 2016-09-12T13:58:35Z