ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,474,180, issued on Nov. 18, was assigned to GRABTAXI HOLDINGS PTE. LTD. (Singapore).
"Method and device for correcting errors in map data" was invented by Evan Hossain (Singapore), Hao Wu (Singapore), Xiaocheng Huang (Singapore), Padarn George Wilson (Singapore) and Guanfeng Wang (Singapore).
According to the abstract* released by the U.S. Patent & Trademark Office: "Aspects concern a method for correcting errors in map data comprising obtaining map data specifying travel possibilities between locations, generating a routing graph from the map data by assigning a vertex to each location and an edge from one vertex to another vertex if the map data specifies that it is possible to tra...