一.正确安装sklearn却提示No module named 'sklearn.lda' It seems that you have installed a newer version of sklearn but you are trying to call an old one from sklearn.lda import LDA#wrong from sklearn.discriminant_analysis import LinearDiscriminantAnalysis as…

by Chris Saxon-Oracle It's Here: Oracle Database 12c Release 2 (12.2) Is available on Oracle Cloud. With it comes a whole host of new features to help you write better, faster applications. Here's my rundown of the top 12 new features to help you whe…

The practice of programming Chapter 4 Interfaces A good programmer should always be good at designing. The essence of design is to balance competing goals and constraints. When we do programming, we need to design a friendly, portable and flexible in…

第一次接触Wicket,如此多的内容是文字,的原贴,希望大家指正 Meet Apache Wicket By JonathanLocke, original author of Wicket 乔纳森·洛克,Wicket的原作者 Why Wicket? If you arelooking to do web application programming in Java, you have a very large numberof choices these days. In fact, the…

"Top-down" Solution Here is the pseudocode for the recursion function maximum_depth(root, depth): 1. return if root is null 2. if root is a leaf node: 3. answer = max(answer, depth) // update the answer if needed 4. maximum_depth(root.left, dept…

Back to App Design Meet User Expectations OS X incorporates the latest technologies for creating great apps. But what makes your app great is not the sophisticated technologies it uses but how well the app helps its users accomplish their goals. User…

/*By Jiangong SUN*/ After encountering some problems in deploying databases to local server, here are some tips which could be helpful in the database deployment exercises. When you deploy your databases. You can monitor the progress in "Data Tools O…

英语原文地址:http://nlp.hivefire.com/articles/share/39865/ 注:本人翻译NLP新闻只为学习专业英语和扩展视野,如果翻译的不好,请谅解! (我挺想看这本书的,但是一查价格,贵的离谱…唉…) 自然语言处理的领头人.LinguaSys Co-Founders 创始人Brian Garr .Vadim Berman 对新书的贡献<Where Humans Meet Machines: Innovative Solutions of Knotty Natura…

本文是Unity官方教程,性能优化系列的第二篇<Diagnosing performance problems using the Profiler window>的简单翻译. 相关文章: Unity性能优化(1)-官方教程The Profiler window翻译 Unity性能优化(2)-官方教程Diagnosing performance problems using the Profiler window翻译 Unity性能优化(3)-官方教程Optimizing garbage co…

tomcat 7 WARNING: A context path must either be an empty string or start with a '/' and do not end with a '/'. The path [/] does not meet these criteria and has been changed to [] 解决方法: 将server.xml中的<Context docBase="../deploy" path="/&q…

      早晨宁波那边的IT人员打电话告知数据库无法访问了.其实我在早晨也发现Ignite监控下的宁波的数据库服务器出现了异常,但是当时正在检查查看其它服务器发过来的各类邮件,还没等到我去确认具体情况,就收到了电话.我首先检查网络是否畅通,结果发现网络没有问题,然后远程登录到该服务器,查看了一下数据库的服务发现其运行正常,但是在本机使用MSSMS管理工具亦无法连接数据库,当下有两种方案:方案一:使用DAC登录数据库,检查具体情况,方案二:直接去查看错误日志,查看具体错误信息.于是为了快点找到原…

Problems (1) 给一棵带边权的树,求遍历这棵树(每个节点至少经过一次)再回到起点的最短路程. 答案是显然的:边权之和的两倍. (2)给一棵带边权的树,求遍历这棵树(每个节点至少经过一次)的最短路程. (3)给一棵带边权的树T(V,  E ),求T的含K个节点的连通子图的边权和的最小值.…

Problems with mmm for mysql posted in MySQL by shlomi 原文:http://code.openark.org/blog/mysql/problems-with-mmm-for-mysql 出于兴趣和研究目的翻译了此文,最近也看了大众点评关于后台使用MMM来做高可用的一些信息(貌似2014年开始转用MHA来做HA),想评估下下MMM在实际生产环境当中的可用性. 正文: 我最近在部署MMM for MySQL的时候遭遇到了一些问题,这使我决定不把它…

Reproduce: Ctrl + H, Select "File Search", will encounter eclipse kinds of bug/error alert: problems encountered during text search Reason: It's because Ctrl + H by default will search disk files, and when the disk files get un-sync with eclipse…

在Ubuntu中安装软件的时候经常碰到E: Unable to correct problems, you have held broken packages.的错误,顾名思义是因为某些软件包冲突导致,幸运的话sudo apt-get update && sudo apt-get upgrade 可以解决,但这种情况属于可遇不可求,更多的适合这么做不济于事.这样一来如何彻底解决就成了一个问题,经过多次摸索之后,将可行的解决方法记录如下: 以安装libxml2-dev时错误为例,安装时提示如…

在用apt 安装软件时,有时会用国内的源以加快下载速度. 但是在使用ubuntu 14.04的过程中,这一过程可能会导致错误“Unable to correct problems, you have held broken packages”. 经测试,网上的apt-get install -f, aptitude等都无效.其实只要将源换成官方的源,然后apt-get update, apt-get upgrade即可解决.…

1787: [Ahoi2008]Meet 紧急集合 Time Limit: 20 Sec  Memory Limit: 162 MB Submit: 2272  Solved: 1029 [Submit][Status][Discuss] Description Input Output Sample Input 6 4 1 2 2 3 2 4 4 5 5 6 4 5 6 6 3 1 2 4 4 6 6 6 Sample Output 5 2 2 5 4 1 6 0 HINT Source Da…

1787: [Ahoi2008]Meet 紧急集合 Time Limit: 20 Sec  Memory Limit: 162 MBSubmit: 2259  Solved: 1023[Submit][Status][Discuss] Description Input Output Sample Input 6 4 1 2 2 3 2 4 4 5 5 6 4 5 6 6 3 1 2 4 4 6 6 6 Sample Output 5 2 2 5 4 1 6 0 HINT Source Day1…

以前做过的题目了....补集+DP        Check the difficulty of problems Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 4091   Accepted: 1811 Description Organizing a programming contest is not an easy job. To avoid making the problems too difficult,…

10 Common Problems Causing Group Policy To Not Apply Group Policy is a solid tool and is very stable. Microsoft has made constant improvements to it since Windows 2000. It allows for the configuration and deployment of pretty much anything in your Ac…

P54A (*) Check whether a given term represents a binary tree Write a predicate istree which returns true if and only if its argument is a list representing a binary tree. Example: (istree (a (b nil nil) nil)) T (istree (a (b nil nil))) NIL (define (i…

L-99: Ninety-Nine Lisp Problems 列表处理类问题的解答,用Scheme实现,首先定义几个在后续解题中用到的公共过程: ; common procedure (define (check-element xs f) (call/cc (lambda (break) (for-each (lambda (x) (if (f x) (break #t))) xs) #f))) (define (foldl f init xs) (define (iter xs acc)…

在android studio或者eclipse中打开layout文件,发现不能预览布局,提示以下错误: Rendering Problems Exception raised during rendering: Unable to find the layout for Action Bar. 解决办法:切换到design视图,选择低一点的api版本即可.…

Rendering Problems No Android SDK found. Please configure an Android SDK.…

activity_main.xml选择Design显示rendering problems no render target selected 在stackOverflow上找到了答案: You need to run the AVD Manager to add a virtual device that matches the target API version your project is set to. Click Tools->Android->AVD Manager. Clic…

We're using HttpWebRequest to hit HTTPS urls, on iOS. In Debug, local builds, etc. everything works fine. The HTTPS urls we're hitting have valid, commercially signed, perfectly normal certificates, everything checks out there. All is well. The app w…

在android studio中打开layout文件,发现不能预览布局,提示以下错误: Rendering Problems Exception raised during rendering: Unable to find the layout for Action Bar. 解决办法:切换到design视图,选择低一点的api版本即可.…

Check the difficulty of problems Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 5830 Accepted: 2542 Description Organizing a programming contest is not an easy job. To avoid making the problems too difficult, the organizer usually expect…

Check the difficulty of problems Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 5457   Accepted: 2400 Description Organizing a programming contest is not an easy job. To avoid making the problems too difficult, the organizer usually exp…

by Henry Robinson, April 26, 2010 The 'CAP' theorem is a hot topic in the design of distributed data storage systems. However, it's often widely misused. In this post I hope to highlight why the common 'consistency, availability and partition toleran…