A computer system comprising one or more communications devices; one or more processors operatively connected to the one or more communications devices; and one or more computer readable media operatively connected to the one or more processors and having stored thereon computer instructions for carrying out the steps of (a) maintaining, by the computer system, a database comprising (1) first data related to identification of one or more works; and (2) second data related to information corresponding to each of the one or more works as identified by the first data; (b) obtaining, by the computer system, extracted features of a work to be identified; (c) identifying, by the computer system, the work by comparing the extracted features of the work with the first data in the database using a non-exhaustive neighbor search; (d) determining, by the computer system, the information corresponding to the identified work based on the second data in the database; and (e) associating, by the computer system, the determined information with the identified work.