2017 年 10月 18 日随笔档案 - papering

2017年10月18日

摘要：布隆过滤器 http://pages.cs.wisc.edu/~cao/papers/summary-cache/node8.html A Bloom filter is a method for representing a set A of n elements (also called key 阅读全文

posted @ 2017-10-18 21:47 papering 阅读(185) 评论(0) 推荐(0)

R Tree

摘要： https://chenli.ics.uci.edu/files/icde2017-AsterixDB-Spatial-Comparison.pdf A Comparative Study of Log-Structured Merge-Tree-Based Spatial Indexes for 阅读全文

posted @ 2017-10-18 20:43 papering 阅读(176) 评论(0) 推荐(0)

__init__ raises an exception, then __del__ will still be called del x 并不直接调用 x.__del__() --- 前者会将 x 的引用计数减一，而后者仅会在 x 的引用计数变为零时被调用。内存

摘要： 7.13. nonlocal 语句 nonlocal_stmt ::= "nonlocal" identifier ("," identifier)* nonlocal 语句会使得所列出的名称指向之前在最近的包含作用域中绑定的除全局变量以外的变量。这种功能很重要，因为绑定的默认行为是先搜索局部命名阅读全文

posted @ 2017-10-18 20:05 papering 阅读(122) 评论(0) 推荐(0)

The Log-Structured Merge-Tree (LSM-Tree

摘要： https://www.cs.umb.edu/~poneil/lsmtree.pdf 【Log-Structured Merge-Tree 】【结构化日志归并树】【要解决的问题】The Log-Structured Merge-Tree (LSM-Tree)https://www.cs.umb.ed 阅读全文

posted @ 2017-10-18 19:23 papering 阅读(320) 评论(0) 推荐(0)

Dynamic programming

摘要： Dynamic programming https://people.eecs.berkeley.edu/~vazirani/algorithms/chap6.pdf 阅读全文

posted @ 2017-10-18 18:55 papering 阅读(143) 评论(0) 推荐(0)

d[k]=eval(k)

摘要： lk = ['oid', 'timestamp', 'signals', 'area', 'building', 'city', 'name', 'floor', 'industry', 'region', 'stress', 'longitude', 'latitud... 阅读全文

posted @ 2017-10-18 17:01 papering 阅读(219) 评论(0) 推荐(0)