METHOD AND SYSTEM FOR DETERMINING SIMILARITY OF DOCUMENTS BASED ON HETEROGENEOUS CONNECTIONS Russian patent published in 2011 - IPC G06F17/30 

FIELD: information technology.

SUBSTANCE: method involves the following: for each type, if similarity of that type is based on an intra-type connection, providing an intra-type similarity function for every such connection which measures similarity between objects of that type; if similarity of that type is based on an inter-type connection, providing an inter-type similarity function for every such connection which measures similarity between objects of that type; and providing a similarity function which measures similarity between objects of that type based on any intra-type similarity functions and any inter-type similarity functions for that type; and for each connection, providing data which determine that connection between objects associated with that connection; simultaneously solving the provided similarity functions based on connections determined by the provided data; and storing similarities based on simultaneous solving of the provided similarity functions.

EFFECT: high accuracy of search owing to calculation of inter-type similarity.

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