Re: Single model or framework for reputation/trust

"Viktor S. Grishchenko" wrote:
> 
> Einar Stefferud wrote:
> > This thread tends to turn this into a discussion of trust, in which
> > case I strongly suggest that we start by defining trust, before we
> > start manipulating values of undefined trust in some kinds of
> > mathematical or statistical operations.
> 
> For definitions of trust we may ask Ed Gerck, he has a large
> collection of.

Thanks, Viktor.

Actually, I have only one definition of trust. From that, as a 
function of the operational context, a large number of derived 
models (aka operational definitions of trust) can be defined. 
Some examples are available at http://mcwg.org/mcg-mirror/trustdef.htm

> Generally, I don't pretend to define some trust model:
> it is "up to customer" to choose one. What may be helpful to build
> that model in the open environment of the internet is reputation.
> I am operating with reputation trivially defined as an average level
> of criterion (promise) fulfillment.

Reputation is usually understood as something from the past. It's
not about promises. So, either I don't understand your definition of
reputation or I need your explanation why reputation would provide 
any assurance, or bounds, for future behavior. 

In addition, you are, perhaps, familiar with the example given by 
Bertrand Russel, where a farmer would go everyday and walk to a 
chicken to give food to it. One day, the farmer walked in the same 
way to the chicken and killed it. If reputation applies here, the 
farmer should have had a good reputation with the chicken. 

Cheers,
Ed Gerck