V6-FACTOR-G996 ***Alert Note***
PROC FACTOR method=ml ultraheywood results may be incorrect...
Product: STAT
Component: FACTOR
Priority: ALERT
If you specify both the METHOD=ML and ULTRAHEYWOOD options on the PROC
FACTOR statement, and if any of the communalities in the final
iteration are greater than 1, then all results of the factor analysis
are incorrect.
In the sample excerpt below, note that in the 7th (final) iteration,
one of the communalities is 1.03682. Since it is greater than 1, and
since both METHOD=ML and ULTRAHEYWOOD were specified, the remainder of
the analysis results will be incorrect.
Iteration Criterion Ridge Change Communalities
1 0.3101369 0.000 0.0908 1.02913 0.79229
2 0.2976415 0.000 0.0371 1.02310 0.82653
3 0.2944623 0.000 0.0134 1.03226 0.81962
4 0.2936818 0.000 0.0081 1.03298 0.82736
5 0.2934573 0.000 0.0031 1.03548 0.82681
6 0.2933895 0.000 0.0020 1.03609 0.82872
7 0.2933679 0.000 0.0008 1.03682 0.82889
There is no circumvention.
Keywords:
proc factor method=ml ultraheywood results incorrect heywood alert
G996
SAS Note Revised On: Thu, 11 Oct 2001
System Release Reported Release Fixed
VM/ESA (CMS) 6.06
OS/390 (MVS) 6.06
OpenVMS VAX 6.06
Data General AOS/VS 6.06
Primos 6.06
IBM OS/2 6.06
HP - Apollo 6.07 TS101
AIX/6000 6.07 TS101
Data General Aviion 6.07 TS101
HP-UX Operating Systems 6.07 TS101
Silicon Graphics Unix 6.07 TS101
DEC Ultrix 6.07 TS101
BULL 6.07 TS201
HP-UX Operating Systems 6.07 TS201
NeXT 6.07 TS201
Silicon Graphics - IRIX 6.07 TS201
Siemens Unix 6.07 TS201
SunOS 3.0 6.07 TS201
SunOS 4.0 6.07 TS201
VM/ESA (CMS) 6.07 TS301
OS/390 (MVS) 6.07 TS301
OpenVMS VAX 6.07 TS301
VM/ESA (CMS) 6.08 TS404
OS/390 (MVS) 6.08 TS404
IBM OS/2 6.08 TS404
OpenVMS VAX 6.08 TS404
VSE/ESA (VSE) 6.08 TS404
Windows 3.11 6.08 TS404
VM/ESA (CMS) 6.09 TS450
OS/390 (MVS) 6.09 TS450
OpenVMS VAX 6.09 TS450
AIX/6000 6.09 TS027
ConvexOS 6.09 TS027
HP-UX Operating Systems 6.09 TS027
Solaris 6.09 TS027
DEC Ultrix 6.09 TS027
OpenVMS Alpha 6.09 TS027
Windows NT 6.09 TS027
Intel ABI 6.10 TS018
Silicon Graphics Unix 6.10 TS018
Macintosh 6.10 TS037
Compaq Tru64 Unix 6.10 TS018
IBM OS/2 6.10 TS019
Windows 3.11 6.10 TS019
AIX/6000 6.11 TS020
HP-UX Operating Systems 6.11 TS020
IBM OS/2 6.11 TS020
Solaris 6.11 TS020
Windows 3.11 6.11 TS020
Intel ABI 6.11 TS040
Silicon Graphics Unix 6.11 TS040
Compaq Tru64 Unix 6.11 TS040
Windows NT 6.11 TS040
Windows 95 6.11 TS040
AIX/6000 6.12 TS020
HP-UX Operating Systems 6.12 TS020
IBM OS/2 6.12 TS020
Solaris 6.12 TS020
OpenVMS Alpha 6.12 TS020
Windows 3.11 6.12 TS020
Windows NT 6.12 TS020
Windows 95 6.12 TS020
Compaq Tru64 Unix 6.12 TS040
Macintosh 6.12 TS040
No Fixes Available
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