今天才慢慢意识到,什么才是学习,(以思考解决问题为驱动),埋头刷分只是方法,不是目的和原动力. 既然准备读研,就要慢慢去了解研究生的生活学习方式是什么样的,涉及到哪些方面. 读研之前要选好方向,但是现在我的兴趣点在哪里真得不知道,好像对每个方向都有兴趣,对每个方向的难点又都有畏惧. 好像有一条合适的准则:尽量选择一个大方向,偏理论的,那么开始念研究生以后课题的方向和角度调整的空间更大,容错率更高. 先跟着孙涵做图像处理方向的内容吧(大方向是计算机视觉,模式识别,机器学习,数据挖掘),要自己带起节…

As an example of subclassing, the random module provides the WichmannHill class that implements an alternative generator in pure Python. The class provides a backward compatible way to reproduce results from earlier versions of Python, which used the…

Given a blacklist B containing unique integers from [0, N), write a function to return a uniform random integer from [0, N) which is NOT in B. Optimize it such that it minimizes the call to system’s Math.random(). Note: 1 <= N <= 1000000000 0 <=…

Given a blacklist B containing unique integers from [0, N), write a function to return a uniform random integer from [0, N) which is NOT in B. Optimize it such that it minimizes the call to system’s Math.random(). Note: 1 <= N <= 1000000000 0 <=…

Random - Generate pseudo-random numbers Source code: Lib/random.py This module implements pseudo-random number generators for various distributions. For integers, uniform selection from a range. For sequences, uniform selection of a random element, a…

HBase shell commands As told in HBase introduction, HBase provides Extensible jruby-based (JIRB) shell as a feature to execute some commands(each command represents one functionality). HBase shell commands are mainly categorized into 6 parts 1) Gener…

環境模型構建可以通過向其中添加模型實現,待之後補充,比較有趣的是建築物模型, 可以編輯多層樓層和房間,加入樓梯,窗戶和牆壁等,具體可以參考附錄,等有空再補充. 起伏地形環境構建可以參考之前內容:在Gazebo中使用DEM構建起伏地形環境 附錄:官方文檔 Building a world This tutorial describes the process of creating a world with both static and dynamic objects. Terminology…

HBASE SHELL命令的使用 在hbase shell客户端有许多的操作命令,今天回顾并且总结一二,希望和广大读者共同进步,并且悉心聆听你们的意见.在此的hbase版本是:HBase 1.2.0-cdh5.10.0. HBASE SHELL命令总结如下: hbase(main):001:0> help HBase Shell, version 1.2.0-cdh5.10.0, rUnknown, Fri Jan 20 12:13:18 PST 2017 Type 'help "COMM…

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Description This is back in the Wild West where everybody is fighting everybody. In particular, there are n cowboys, each with a revolver. These are rather civilized cowboys, so they have decided to take turns firing their guns until only one is left…