tristanz / OpenIRT (http://people.fas.harvard.edu/~tzajonc/openirt.html)
Bayesian and Maximum Likelihood Estimation of Item Response Theory (IRT) Models
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| commit 31: | 2aa89fb729f4 |
| parent 30: | fd5052119a16 |
| branch: | default |
Fixed line feed issue.
Changed (Δ330 bytes):
raw changeset »
Stata/openirt.ado (11 lines added, 13 lines removed)
Stata/openirt.pkg (1 lines added, 4 lines removed)
Stata/stata.toc (1 lines added, 1 lines removed)
docs/Open IRT Slides.lyx (24 lines added, 3 lines removed)
Up to file-list Stata/openirt.ado:
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capture program drop openirt |
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program openirt |
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version 10.1 |
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preserve |
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set more off |
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set eolchar unix |
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local seed = round(runiform()*10000000) |
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* set eolchar unix |
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local seed = round(uniform()*10000000) |
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syntax, id(varname) item_prefix(name) save_item_parameters(string) save_trait_parameters(string) /// |
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[samplesize(integer 2000) burnin(integer 1000) theta(varname) model(string) /// |
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fixed_item_file(string)] |
| … | … | @@ -51,12 +52,10 @@ program openirt |
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} |
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qui recode _all (.=-9999) |
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qui gen `group' = 1 |
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qui outsheet id `group' `theta' `item_prefix'* using `response_file', replace delim(" ") noquote nolabel nonames |
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* type `response_file' |
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if("`c(os)'"=="Windows") { |
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qui findfile DOS2UNIX.EXE |
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! `r(fn)' `response_file' |
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} |
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qui outsheet `id' `group' `theta' `item_prefix'* using openirt_tmp.txt, replace delim(" ") noquote nolabel nonames |
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filefilter openirt_tmp.txt `response_file', from("\r\n") to("\n") |
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erase openirt_tmp.txt |
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* Write out parameter data |
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display as text "Setting up parameter data..." |
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clear |
| … | … | @@ -111,11 +110,10 @@ program openirt |
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qui compress |
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sort id |
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isid id |
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qui outsheet id type numcat a b c d1 d2 d3 d4 using `item_file', replace delim(" ") noquote nolabel nonames |
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if("`c(os)'"=="Windows") { |
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qui findfile DOS2UNIX.EXE |
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! `r(fn)' `item_file' |
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qui outsheet id type numcat a b c d1 d2 d3 d4 using openirt_tmp.txt, replace delim(" ") noquote nolabel nonames |
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filefilter openirt_tmp.txt `item_file', from("\r\n") to("\n") |
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erase openirt_tmp.txt |
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* Run estimation routine from shell |
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qui findfile openirt.exe |
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local execfile `r(fn)' |
Up to file-list Stata/openirt.pkg:
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v 1. |
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v 1.1 |
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d openirt. Bayesian and Maximum Likelihood Estimation of Item Response Theory (IRT) models. |
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d Tristan Zajonc (tzajonc@fas.harvard.edu). |
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| … | … | @@ -20,9 +20,6 @@ f openirt.sthlp |
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G WIN OpenIRT.exe openirt.exe |
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G WIN64A OpenIRT.exe openirt.exe |
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G WIN64I OpenIRT.exe openirt.exe |
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G WIN DOS2UNIX.EXE DOS2UNIX.EXE |
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G WIN64A DOS2UNIX.EXE DOS2UNIX.EXE |
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G WIN64I DOS2UNIX.EXE DOS2UNIX.EXE |
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G MAC openirt_osx openirt.exe |
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G MACINTEL openirt_osx openirt.exe |
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G MACINTEL64 openirt_osx openirt.exe |
Up to file-list Stata/stata.toc:
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v 1. |
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v 1.1 |
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d Stata programs by Tristan Zajonc |
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d Here are some potentially useful things I have written: |
Up to file-list docs/Open IRT Slides.lyx:
| … | … | @@ -342,7 +342,14 @@ I focus on common goals of development e |
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\end_inset |
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, motivated by the difficulties we faced for LEAPS Project (Andrabi et al., |
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2009) and India benchmarking exercises |
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2009) and India benchmarking exercises |
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\begin_inset CommandInset citation |
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LatexCommand citep |
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key "das.wp2008" |
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\end_inset |
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. |
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\end_layout |
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\begin_layout Standard |
| … | … | @@ -1247,11 +1254,25 @@ Bayesian estimation is done via Markov C |
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\end_layout |
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\begin_layout Itemize |
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See |
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See |
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\begin_inset CommandInset citation |
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LatexCommand citet |
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key "patz.jebs1999a,patz.jebs1999b" |
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\end_inset |
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for details on MCMC methods applied to IRT. |
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\end_layout |
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\begin_layout Itemize |
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OpenIRT uses slice sampling |
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OpenIRT uses slice sampling |
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\begin_inset CommandInset citation |
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LatexCommand citep |
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key "neal.aos2003" |
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\end_inset |
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rather than Metropolis-Hastings. |
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\end_layout |
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\begin_layout BeginFrame |