In one exemplary embodiment, a storage medium embodying a program of instructions for performing operations including: storing raw information for primary properties of primary nodes within a primary network; in response to receiving a query, transforming the raw information into transformed information using key(s) and based on the query, the query is in relation to a queried property, the transformed information is transformed data for the queried property, the transformed information represents a surrogate network having surrogate nodes corresponding to a portion of the primary nodes, the transformed information enables performance of operation(s) without specific knowledge of and without revealing the entirety, the transformed information further enables one having the key(s) to relate an output of the operation to the raw information; and generating a solution that relates a transformed query to the transformed information, the transformed query is a transformed representation of the query obtained by using the key(s).