[WG-UMA] graph person-to-organization constellation

Domenico Catalano domenico.catalano at oracle.com
Tue Mar 15 15:16:03 EDT 2011

Hi Rainer,

thanks for the comments/questions. You are not late, and the diagram show an early approach on which we are doing some assumptions.
The graph is a tentative to explore how to evaluate/calculate (Susan thinks about an algorithm) the degree of trust which can serve as a rational basis for the decision of relying on an Entity.

For UMA constellations, the idea is to leverage on two dimensional quantities:
- level of delegation Y-axes, (objective: based on protocol interactions)
- level of trustworthiness  X-axes (subjective: based on Entity point of view)

(the arrows represent the trust relationship map)

"In sum, the quantitative dimensions of trust are based on the quantitative dimensions of its cognitive constituents" (*).

Anyway, we're going to revise the approach based on last comments.

(*) http://www.istc.cnr.it/T3/trust/pages/degrees.html

ps. attached a person-to-self sharing constellation

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On Mar 15, 2011, at 11:59 AM, Rainer H?rbe wrote:

> Hi Domenico
> Sorry if my comment is late and inadequate as I missed the discussion on the last call. I have difficulties to interpret the diagram:
> - What is the difference between trust and trustworthiness? Subjective vs. objective? If objective, by what authority?
> - Are we talking about technical or legal trust? The terms imply a mix of both, which is problematic.
> - What are the driving factors to put the actors at certain positions in the matrix?
> - How should the numbers be used? For some automated policy negotiation? If yes, how should it be computed?
> - What are the assumptions in the model on the technical and policy levels?
> In my view a trust model should make the trust computation as explicit as possible without displaying excessive details.
> - Rainer
> Am 10.03.2011 um 18:32 schrieb Domenico Catalano:
>> An Authorizing user (AU) make a loan request to a Financial Broker (Legal person) which became Requester Party in the act to access Authorizing User's resource (i.e. credit score). 
>> The Financial Broker uses a Bank online loan service (third-party Requester) to process the AU request. 
>> <PastedGraphic-2.pdf>_______________________________________________
>> WG-UMA mailing list
>> WG-UMA at kantarainitiative.org
>> http://kantarainitiative.org/mailman/listinfo/wg-uma
> <Trust_model.jpeg>

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