排序方式: 共有4条查询结果,搜索用时 0 毫秒
1
1.
Astronomical cross-matching is a basic method for aggregating the observational data of different wavelengths. By data aggregation, the properties of astronomical objects can be understood comprehensively. Aiming at decreasing the time consumed on I/O operations, several improved methods are introduced, including a processing flow based on the boundary growing model, which can reduce the database query operations; a concept of the biggest growing block and its determination which can improve the performance of task partition and resolve data-sparse problem; and a fast bitwise algorithm to compute the index numbers of the neighboring blocks, which is a significant efficiency guarantee. Experiments show that the methods can effectively speed up cross-matching on both sparse datasets and high-density datasets. 相似文献
2.
3.
4.
一、机关事业单位档案数字化的重要意义近日,中共中央办公厅、国务院办公厅印发的《“十四五”全国档案事业发展规划》中提到要加快推进档案信息化建设,引领档案管理现代化,将档案信息化主动融入数字经济、数字社会、数字政府建设,推动档案全面纳入国家大数据战略,并提出继续做好“存量数字化”、“增量电子化”,中央和国家机关传统载体档案数字化率达到80%,各类电子文件应归尽归、电子档案应收尽收。陆国强同志在“深入学习贯彻习近平总书记重要批示精神专题研讨班”的讲话中也提到了要加大力度推进档案信息化建设,突显了档案数字化工作的重要意义。 相似文献
1