Abstract: The present invention involves a method, a system, and software for semantic analysis of disparate data in an environment having a plurality of datasets having distinct information fields. A candidate generation module involves creating graphs with information fields from the plurality of datasets as nodes, then creating smaller graphs containing source and sink vertices based on heuristic values. An electrical network computation module involves representing graphs as an electrical circuit to calculate the voltage of each node and the current of each edge by solving a system of linear equations. A diverse subgraph generation module involves selecting paths that carry the larger amount of current and have more new nodes in an iterative process. With each iteration, the path that scores the highest marginal current per number of existing types of nodes is selected and added to the diverse subgraph.