ALEXANDRIA, Va., July 16 -- United States Patent no. 12,670,132, issued on June 30, was assigned to Huawei Technologies'Co.'Ltd.' (Shenzhen, China).
"Cardinality estimation method and apparatus" was invented by Ji Sun (Beijing), Shifu Li (Beijing), Shujie Zhang (Shenzhen, China) and Guoliang Li (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cardinality estimation method and an apparatus are provided. The method includes: selecting a target model type from a plurality of model types based on a target distribution feature and mapping relationship information, where the mapping relationship information includes a mapping relationship between the plurality of model types and a predicted distri...