[R] Weights in survReg

[Alexander Antonyuk]

Dear R users,

I am trying to find out what the function survReg does exactly with the 
Weights parameters. I looked in Terry Therneau documentations and other 
places and couldn't find anything. I tried to make an analogy with weighted 
OLS and assumed that the scale parameter Sigma in the accelerated 
failure-time model log(Time)= X*betas +Sigma*E, is of the form Sigma(i) = 
Sigma/Weights(i).

Can anyone confirm that or point me in the direction where I can find out 
for sure?

Thank you,
Sasha