首页>
外国专利>
Space- and time-efficient management and summarization of data using intermediate summary structure and hierarchical multidimensional histogram
Space- and time-efficient management and summarization of data using intermediate summary structure and hierarchical multidimensional histogram
展开▼
机译:使用中间汇总结构和分层多维直方图,节省时间和空间,并进行数据汇总
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method maintains a multidimensional histogram for a data array having a data array size, the method having a processing time substantially less than proportional to the data array size. The method involves receiving a data update that indicates a change to data in the data array; with the data update, updating an intermediate data structure having a size substantially smaller than the data array size, so that the updated intermediate data structure remains an at-least-approximate representation of the data in the data array as changed by the data update; collecting a number of substantially-largest-coefficient linear combinations of then-current data, the number being small compared with the data array size; and forming the multidimensional histogram as a histogram to an intermediate data array re synthesized from the collected linear combinations.
展开▼