SAS Note V6-FACTOR-G996

From: SAS Technical Support (LISTSERV@VM.SAS.COM)
Date: Fri Oct 12 2001 - 10:57:28 EDT

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    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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