COMMENT --------------------------------------- Betahat - Roszman1 ---------------------------------------
INPATH C:\Projects\Code\Beta\Benchmarks\Nonlinear
OPEN Roszman1_NIST.PRN
USE 1 25

NLS  Y b1 - b2*x - arctan(b3/(x-b4))/3.141592653589793238462643383279E0       /  INPUTB B1=0.1 B2=-0.00001 B3=1000 B4=-100
NLS  Y b1 - b2*x - arctan(b3/(x-b4))/3.141592653589793238462643383279E0       /  INPUTB B1=0.2 B2=-0.000005 B3=1200 B4=-150
                                
COMMENT --------------------------------------- Nist - Roszman1 ---------------------------------------
'Source is http://www.itl.nist.gov/div898/strd/nls/data/roszman1.shtml
COMMENT           Starting Values                  Certified Values
COMMENT 
COMMENT         Start 1     Start 2           Parameter     Standard Deviation
COMMENT   b1 =      0.1         0.2         2.0196866396E-01  1.9172666023E-02
COMMENT   b2 =     -0.00001    -0.000005   -6.1953516256E-06  3.2058931691E-06
COMMENT   b3 =   1000        1200           1.2044556708E+03  7.4050983057E+01
COMMENT   b4 =   -100        -150          -1.8134269537E+02  4.9573513849E+01
COMMENT 
COMMENT Residual Sum of Squares:                    4.9484847331E-04
COMMENT Residual Standard Deviation:                4.8542984060E-03
COMMENT Degrees of Freedom:                                 21
COMMENT Number of Observations:                             25
COMMENT