Patent ID: 7899757

Claim:
A method for managing trust level of a collection of information having a first calculation data and a second calculation data, comprising: obtaining, using a processor of a computer system, the first calculation data from a data source; calculating, using the processor, the second calculation data from at least the first calculation data according to a first relationship of a calculation engine; determining, using the processor and based on a trust structure, a second trust level of the second calculation data from at least a first trust level based on the data source; and indicating validity of the second calculation data based on the derived second trust level, wherein the trust structure comprises an ordered graph structure comprising: a first node corresponding to the first calculation data, a second node corresponding to the second calculation data, and a first edge connecting the first node and the second node, wherein the second node is a parent node of the first node, wherein the second trust level is determined from the first trust level according to a weight associated with the first edge, and wherein the weight associated with the first edge relates to how the second calculation data is calculated from the first calculation data and is determined from the first relationship of the calculation engine.