Thanks for the responses.

> It means that only one item has a non-zero weight,
> therefore that weight is one.
> 
> It would be interesting to see what happened if you
> eliminated the explicit upper bounds on your weights.
> They should be implied by the other constraints.

That makes sense, so I dropped the upper bound and got the same answers I was 
getting before which is a good thing.  It also may have run a little faster 
which is another good thing.  And, clearly, I didn't get any variables coming 
up as "non-basic on its upper bound".  Still have basic vars valued 0.0, but 
I'm OK with that as I figured there was a good deal of degeneracy in my 
problem(s).

Also, thanks for the Dantzig reference, Andrew.  I dusted that book off my 
shelf and will take a look at that chapter and see if my understanding improves.

Joey


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