Abstract: A method and apparatus for generating a structured profile of activities and transitions is provided. The method includes receiving data related to a plurality of activities and a plurality of transitions, wherein each of the plurality of transitions is a path between a pair of activities among the plurality of activities, storing the data related to the plurality of activities and the plurality of transitions into the storage device, reducing a dimension of the data by indexing the data using state variables, generating a plurality of nodes, wherein each of the plurality of nodes corresponds to each of the plurality of activities, generating a plurality of links, wherein each of the plurality of links corresponds to each of the plurality of transitions, and storing the plurality of nodes and the plurality of links as the structured profile at the storage device.