The first element in the reference table has a large magnitude (3.48e6). The error tolerance was 1.0e-8 which was 14 digits smaller. The change from RealMatrix to RealVector scheduled the numeric operations differently, despite the same values should theoretically be computed (the matrix used was a 1x1 matrix from which the trace was extracted, now we compute a vectorial dot product which leads to a double). After the change, the resulting value was about -3482258.63459583 (last significant digit changed). This seemed acceptable to me. A better change would probably have been to replace an absolute threshold by a relative threshold.
Do you want me to revert the change ? Luc ----- "Phil Steitz" <phil.ste...@gmail.com> a écrit : > > > > /** > > > > Modified: > commons/proper/math/trunk/src/test/org/apache/commons/math/stat/regression/OLSMultipleLinearRegressionTest.java > > URL: > http://svn.apache.org/viewvc/commons/proper/math/trunk/src/test/org/apache/commons/math/stat/regression/OLSMultipleLinearRegressionTest.java?rev=772114&r1=772113&r2=772114&view=diff > > > ============================================================================== > > --- > commons/proper/math/trunk/src/test/org/apache/commons/math/stat/regression/OLSMultipleLinearRegressionTest.java > (original) > > +++ > commons/proper/math/trunk/src/test/org/apache/commons/math/stat/regression/OLSMultipleLinearRegressionTest.java > Wed May 6 09:40:13 2009 > > @@ -139,7 +139,7 @@ > > new double[]{-3482258.63459582, 15.0618722713733, > > -0.358191792925910E-01,-2.02022980381683, > > -1.03322686717359,-0.511041056535807E-01, > > - 1829.15146461355}, 1E-8); // > > + 1829.15146461355}, 2E-8); // > > > What caused this? > > Phil > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org > For additional commands, e-mail: dev-h...@commons.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org
