Database management methods and information processing systems

Abstract

This invention provides a database management method that reduces the amount of data in a vector database by suppressing the decrease in search accuracy. According to an embodiment, the database management method manages multiple clusters, each having a representative vector. In the database management method, when registering a first D-dimensional vector in the vector database, the cluster containing the representative vector closest to the first D-dimensional vector is determined, and D difference values ​​are calculated by subtracting the D elements contained in the representative vector of the determined cluster from the D elements contained in the first D-dimensional vector. In the database management method, the identifier of the determined cluster and the D difference values ​​are stored in the vector database as position information of the first D-dimensional vector.

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