Our approach

• Challenge the service agent with some test cases x1, x2, ..., xk . The remote service agent R provides the corresponding answers fR(x1), fR(x2), ..., fR(xk). The client C may or may not have independent access to the answers fC(x1), fC(x2), ..., fC(xk).

• Some basic questions:

  • How large should k be?
  • What if fC(x) is not known by the client agent?
  • What if the service agent is fee based and so answers, fR(x), are not given away freely before commitment?
  • How to implement the validation process online?

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• Actually I think we can find the same idea everywhere in this commercial society.

• E.g. You can download a lot of free demo software . By the demo, you can functionally validate whether the software is that you need and then make a decision whether to buy it.