2022-01-16
5分钟阅读时长

# 数字化生活数据

• 9:00：起床，洗漱。
• 9:30：工作。
• 12:00：午餐。
• ….

“数字化各种生活数据”，这么做的好处有什么？在我看来，有这些好处：

• 形成上面的“时序数据”之后，可以方便进行聚合、统计、查询。
• 定期还能依赖于各种工具来进行汇总、回顾等。

# 推荐

## 算法可视化交互动图

Data Structure Visualization

## B-Tree中的“B”是什么意思？

B-trees were invented by Rudolf Bayer and Edward M. McCreight while working at Boeing Research Labs, for the purpose of efficiently managing index pages for large random-access files. The basic assumption was that indexes would be so voluminous that only small chunks of the tree could fit in main memory. Bayer and McCreight’s paper, Organization and maintenance of large ordered indices,[1] was first circulated in July 1970 and later published in Acta Informatica.[3]

Bayer and McCreight never explained what, if anything, the B stands for: Boeing, balanced, broad, bushy, and Bayer have been suggested.[4][5][6] McCreight has said that “the more you think about what the B in B-trees means, the better you understand B-trees.”[5]

B-tree - Wikipedia