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OX - Programming language

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OX is a programming language created in 1996 by Jurgen A. Doornik.

#807on PLDB 27Years Old 251Users
4Books 0Papers 58Repos

Ox is an object-oriented matrix programming language with a mathematical and statistical function library, developed by Jurgen Doornik. It has been designed for econometric programming. It is available for Windows, Mac OS X and Linux platforms. Read more on Wikipedia...

Example from hello-world:
{Show 'Hello World'}
Example from Linguist:
nldge::ParticleLogLikeli() { decl it, ip, mss, mbas, ms, my, mx, vw, vwi, dws, mhi, mhdet, loglikeli, mData, vxm, vxs, mxm=<>, mxsu=<>, mxsl=<>, time, timeall, timeran=0, timelik=0, timefun=0, timeint=0, timeres=0; mData = GetData(m_asY); mhdet = sqrt((2*M_PI)^m_cY * determinant(m_mMSbE.^2)); // covariance determinant mhi = invert(m_mMSbE.^2); // invert covariance of measurement shocks ms = m_vSss + zeros(m_cPar, m_cS); // start particles mx = m_vXss + zeros(m_cPar, m_cX); // steady state of state and policy loglikeli = 0; // init likelihood //timeall=timer(); for(it = 0; it < sizer(mData); it++) { mss = rann(m_cPar, m_cSS) * m_mSSbE; // state noise fg(&ms, ms, mx, mss); // transition prior as proposal mx = m_oApprox.FastInterpolate(ms); // interpolate fy(&my, ms, mx, zeros(m_cPar, m_cMS)); // evaluate importance weights my -= mData[it][]; // observation error vw = exp(-0.5 * outer(my,mhi,'d')' )/mhdet; // vw = exp(-0.5 * sumr(my*mhi .*my ) )/mhdet; vw = vw .== .NaN .? 0 .: vw; // no policy can happen for extrem particles dws = sumc(vw); if(dws==0) return -.Inf; // or extremely wrong parameters loglikeli += log(dws/m_cPar) ; // loglikelihood contribution //timelik += (timer()-time)/100; //time=timer(); vwi = resample(vw/dws)-1; // selection step in c++ ms = ms[vwi][]; // on normalized weights mx = mx[vwi][]; } return loglikeli; }

Language features

Feature Supported Token Example
Strings '
'Hello world'
Print() Debugging Show
// A comment
Line Comments //
// A comment
Semantic Indentation X

Books about OX from ISBNdb

title authors year publisher
An Object-oriented Matrix Programming Language: Ox 4 Jurgen A. Doornik 2006 Timberlake Consultants
Ox Programming Language Surhone and Lambert M. and Tennoe and Mariam T. and Henssonow and Susan F. 2010
An Object-oriented Matrix Programming Language: Ox 5 Jurgen A. Doornik 2007 Timberlake Consultants
Introduction To Ox An Object-oriented Matrix Programming Language Jurgen A. Doornik and Marius Ooms 2006 Timberlake Consultants Ltd
speakeasy.html · ox.html · alpine-abuild.html

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