Agreement Negotiation Protocol Sample Clauses

Agreement Negotiation Protocol. The schema adopted in the definition of agreements is shown on the left hand side in Figure 8, an agreement is an XML document with Agreement, Resource, URLNotification, Timestamp, Negotiation, ListObligations, and IfViolated elements. Agreements are used to bind a list of obligations between two parts, a UCPF and a third-party service, and allow for their negotiation. The use of agreements allows the personalization of general obligations and with that, the use of a limited number of predefined obligations, which are “reused” in each agreement, instead of creating new instances.

Agreement Negotiation Protocol. AN P In order to preserve or revise privacy agreement, a web service needs protocols that govern and structure interac- tions between signing parties. The features of the Agree- ment Negotiation Protocol presented here includes a negotiation language defined previously, and an interac- tion mechanism that the parties must follow to come to an accord. Such mechanism is based on Xxxxxxxxxx’x Alter- nating Offers Protocol [12], where two parties A1 and A2 participate in the negotiation process and make offers and counteroffers. In our framework, we modify such model in order to assume that the protocol is not an alternating offer model, in the sense that the customer does not make any counter offer to the agreement proposal received from the provider. It is only the provider that makes an offer and waits for the acceptance or refusal of the customer. Also we assume that the players never opt out the negotiation during a time period of the negotiation µn that both parties must be defined in the agreement, otherwise the penalties will be fired. AN P The protocol ∈ During the negotiation session each party uses suitable ac- tions when communicating with each other. The service provider should notify service customer when an event e ∈ AC E happens at time point t and needs a negotiation in or- der to activate some actions ac updating the privacy agreement data term, then he suggests a privacy agreement proposition to the service customer that contains revised terms in privacy data term (proposal). The service customer must reply by sending decision about the received agree- ment privacy proposition. Service costumer has the right to accept or reject the proposition and in this case he must send some additional information about negative decision (justify). Such justification may help the provider to make a new proposal. Finally, the negotiation will end successfully otherwise if the time period of the negotiation is over, then the penalties are fired. { } The parties can act in the negotiation only at discrete time point in the set T = 0, 1, 2, At each instant t (t = 0) in the negotiation, if the negotiation has not yet terminated, the service customer, whose turn is to respond, may send accept or reject. If a proposition made by service provider at time instant t is accepted by service customer then the negotiation terminates. P We express the bilateral protocol by a state machine (STM), where the states represent the different phases in which the negotiation of...