Help using Base SAS procedures

Proc Reg & Proc Qlim Problem

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Proc Reg & Proc Qlim Problem

Hi~I need some help to know and solve these problems.

(1) Pro Reg


11 title 'LDR OLS';
12 proc reg data=Raw_CB_S4;
13 model LDR = NDT Z_score PB Collateral Uniqueness Size Prof Dv
Dummy1 Dummy2 Dummy3 Dummy4 /
13 ! acov spec collin;
14 run;


NOTE: 1519 observations read.
NOTE: 1519 observations used in computations.


WARNING: The average covariance matrix for the SPEC test has been
deemed singular which violates an assumption of the test. Use caution
when interpreting the results of the test.-------------------->What is
this!???


(2) Proc Qlim


83 title 'LRC Tobit';
84 proc qlim data=EM_LRC;
85 model LRC = NDT Z_score PB Collateral Uniqueness Size Prof Dv
Dummy1 Dummy2 Dummy3 Dummy4 /
85 ! censored (LB=0);
86 hetero LRC ~ NDT Z_score PB Collateral Uniqueness Prof Dv Dummy3
Dummy4 / link=exp noconst;
87 run;


NOTE: FCONV convergence criterion
satisfied.------------------------------------------>What this means?
NOTE: At least one element of the gradient is greater than
1e-3------------------>.???
NOTE: Moore-Penrose inverse is used in covariance
matrix.-----------------------> ???


Please could you tell me what is the "Warning" and "Note" means and is
there some tenique i could use to modify or improve that?


Thank You Very Much Message was edited by: zenta0503
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