08 2013 档案
android:layout_weight
摘要:layout_weight 用于给一个线性布局中的诸多视图的重要度赋值。 所有的视图都有一个layout_weight值,默认为零,意思是需要显示多大的视图就占据多大的屏幕空 间。若赋一个高于零的值,则将父视图中的可用空间分割,分割大小具体取决于每一个视图的layout_weight值以及该值在当前屏幕布局的整体 layout_weight值和在其它视图屏幕布局的layout_weight值中所占的比率而定。需要特别注意的是,weight值越大,其重要性越低,所占空间越小。 阅读全文
posted @ 2013-08-24 18:41 Jiang, X. 阅读(212) 评论(0) 推荐(0) 编辑
A/B测试
摘要:昨天把前段时间开发的二胡调音器的应用发布到了亚马逊应用程序商店,看到了一个A/B测试的标签,了解一下A/B测试的工作原理。A/B测试是一种新兴的网页优化方法,可以用于增加转化率注册率等网页指标。使用A/B 测试首先需要建立一个测试页面(variation page),这个页面可能在标题字体,背景颜色,措辞等方面与原有页面(control page)有所不同,然后将这两个页面以随机的方式同时推送给所有浏览用户。接下来分别统计两个页面的用户转化率,即可清晰的了解到两种设计的优劣。传统的A/B测试,是一种把各组变量随机分配到特定的单变量处理水平,把一个或多个测试组的表现与控制组相比较,进行测试的方式 阅读全文
posted @ 2013-08-21 18:12 Jiang, X. 阅读(606) 评论(0) 推荐(0) 编辑
[转载] A set of top Computer Science blogs
摘要:This started out as alistof top Computer Science blogs, but it more closely resembles aset: the order is irrelevant and there are no duplicate elements; membership of this set of blogs satisfies all of the following conditions:they are written by computer scientists and focus on computer science res 阅读全文
posted @ 2013-08-20 21:21 Jiang, X. 阅读(286) 评论(0) 推荐(0) 编辑
[转载] Calculating Entropy
摘要:From:johndcook.com/blogFor a set of positive probabilitiespisumming to 1, their entropy is defined as(For this post, log will mean log base 2, notnatural log.)This post looks at a couple questions about computing entropy. First, are there any numerical problems computing entropy directly from the eq 阅读全文
posted @ 2013-08-20 20:44 Jiang, X. 阅读(240) 评论(0) 推荐(0) 编辑
Android Studio apk 文件路径
摘要:/out/production 阅读全文
posted @ 2013-08-20 14:43 Jiang, X. 阅读(3185) 评论(0) 推荐(0) 编辑
[转载]网站建设公司赚钱的案例分析
摘要:去年年底我写过一篇文章《网站建设公司不挣钱的原因》,当时还罗列过很多不挣钱原因以及建议。现在我想用托尔斯泰的一句话:“赚钱的公司都是一样的,不赚钱的公司各有各的问题”。就在今年,2013年,遇到了一个建站公司的“奇葩”,之所以叫奇葩,是因为如今那么多的建站公司中,绝大多数都赔钱或者支出平衡,竟然有这么一家还真是赚钱的。(不便写出公司名称,奇葩有点贬义,以下简称JP“极品”的意思) 前些日子加入了一个HMTL5群,里面成员是全国各地的建站公司,北京的也不少,北京做百度推广的建站公司,提起名字相互并不陌生,而且存在一种“好奇心”,你懂的,相互问问工资、提成、业绩、什么的。聊着聊着,这位“极品... 阅读全文
posted @ 2013-08-20 12:12 Jiang, X. 阅读(367) 评论(0) 推荐(0) 编辑
写essay和research paper必用的17个网站
摘要:1、http://scholar.google.com/虽然还是Beta版,但个人已觉得现在已经是很好很强大了,Google学术搜索滤掉了普通搜索结果中大量的垃圾信息,排列出文章的不同版本以及被其它文章的引用次数。略显不足的是,它搜索出来的结果没有按照权威度(譬如影响因子、引用次数)依次排列,在中国搜索出来的,前几页可能大部分为中文的一些期刊的文章。2、http://www.scirus.comScirus 是目前互联网上最全面、综合性最强的科技文献搜索引擎之一,由Elsevier科学出版社开发,用于搜索期刊和专利,效果很不错!Scirus覆盖的学科 范围包括:农业与生物学,天文学,生物科学, 阅读全文
posted @ 2013-08-20 10:17 Jiang, X. 阅读(466) 评论(0) 推荐(0) 编辑
how to use javap command
摘要:SYNOPSISjavap [options] classesDESCRIPTIONThe javap command is called "disassembler" because it takes apart class files and tells you what's inside them. We won't use it often but sometimes it is very useful to find out how a particular java statement works out, especially for inne 阅读全文
posted @ 2013-08-16 19:23 Jiang, X. 阅读(785) 评论(0) 推荐(0) 编辑
How To Create a Personal Balance Sheet
摘要:Calculating your personal net worth is the best way to know exactly what your starting point is, in any financial plan you develop. A balance sheet calculates your net worth by comparing your financial assets (what you own) with your financial liabilities (what you owe). The difference between the t 阅读全文
posted @ 2013-08-15 20:29 Jiang, X. 阅读(508) 评论(0) 推荐(0) 编辑
Top 10 Universities for Artificial Intelligence
摘要:1. Massachusetts Institute of Technology, Cambridge, MAMassachusetts Institute of Technology is a private institution that was founded in 1861. It has a total undergraduate enrollment of 4,299, its setting is urban, and the campus size is 168 acres. It utilizes a 4-1-4-based academic calendar. Massa 阅读全文
posted @ 2013-08-13 18:57 Jiang, X. 阅读(1032) 评论(0) 推荐(0) 编辑
卡内基梅隆大学如何培养计算机博士
摘要:卡内基·梅隆大学(CarnegieMellonUniversity)于1900年成立于宾夕法尼亚州匹兹堡市,经过一百多年发展已经成为世界顶尖大学之一,其计算机科学学院多次被《美国新闻与世界报道》列为全美第一,代表计算机科学研究与教学的世界最高水平。本文介绍了卡内基·梅隆大学计算机科学博士的培养模式,以期为我国计算机科学博士的培养提供有益的借鉴与思考。1目标具体、明确的培养方案卡内基·梅隆大学的计算机科学博士学位授予那些拥有渊博的计算机科学知识并在计算机科学领域完成独创性研究的学生,旨在培养优秀的研究者、教师和计算机科学领域未来的引领者。为获得博士学位,每个学生必须 阅读全文
posted @ 2013-08-13 18:12 Jiang, X. 阅读(4017) 评论(0) 推荐(3) 编辑
Java Inner Classes
摘要:When thinking about inner classes in java, the first thing that comes to my mind is that,WHYdo we need to add inner classes to normal one? Leave alone all the specific details of the Java syntax, I think the reason is quite SIMPLE: we are human beings and we are always looking for approaches with LE 阅读全文
posted @ 2013-08-13 17:37 Jiang, X. 阅读(563) 评论(0) 推荐(0) 编辑
End of HTML blink tag
摘要:Recently I have read a news which said "Firfox 23 nixes support for outdated blink HTML tag". Google'Chrome, Apple's Safari, and Opera have all abandoned the tag.I reached to the internet since 2000s so seldom could I see it in the web. It makes me consider why it is abandoned. The 阅读全文
posted @ 2013-08-13 17:31 Jiang, X. 阅读(695) 评论(0) 推荐(0) 编辑
How to set colors of HTML tables
摘要:There is a simple way to set the color of tables: use the bgcolor attribute of tag .However, this method is not a good approach since it is deprecated in HTML5.So we need to set the color with CSS. 阅读全文
posted @ 2013-08-13 17:22 Jiang, X. 阅读(185) 评论(0) 推荐(0) 编辑
Eclipse shortcuts
摘要:EditorShortcutDescriptionAlt + /Content assist. A great help for our coding.Ctrl + Shift + FFormatCtrl + F10, then NDisplay line numbersCtrl + Shift + OManage importsCtrl + DDelete the rowAlt + up/downMove the line up/downAlt + left/rightBack/Forward HistoryCtrl + /CommentCtrl + OQuick outlineCtrl + 阅读全文
posted @ 2013-08-13 17:21 Jiang, X. 阅读(525) 评论(0) 推荐(0) 编辑
HTML Hyperlink between and within pages
摘要:In HTML, we can use tag to create hyperlinks between and within pages. The difference is just that, if it's with the prefix '#', it is a link within this page, else it is a link to another page.link to a web pageThis is a link to my blog:Xiang-JiangIt works out like this:Xiang-Jianglink 阅读全文
posted @ 2013-08-13 17:20 Jiang, X. 阅读(208) 评论(0) 推荐(0) 编辑
Swing How to make dialogues
摘要:There are two types of dialog:modalnon-modal: must use JDialog directly Taken JFileChooser as Example:1. Open a JFileChooser:JFileChooserfileChooser = new JFileChooser();2. Get value from it:File file = fileChooser.getSelectedFile();Code: 1 import javax.swing.*; 2 3 import java.awt.*; 4 import ... 阅读全文
posted @ 2013-08-13 17:19 Jiang, X. 阅读(435) 评论(0) 推荐(0) 编辑
VS2010安装失败解决办法
摘要:1. 运行regedit打开注册表;2. 找到HKEY_LOCAL_MACHINE\SOFWARE\ Microsoft\ Internet Explorer\ MAIN;3.MAIN子键的权限问题,修改成"允许完全控制".MAIN子键点击右键里弹出权限子窗口在“完全控制”前面处打勾;4. 重启计算机,问题解决。 阅读全文
posted @ 2013-08-13 16:20 Jiang, X. 阅读(1358) 评论(0) 推荐(0) 编辑
VS2010运行类向导提示“未实现该方法或操作”
摘要:因为解决方案中包含有安装项目,将这些项目排除掉,即可打开类向导。 阅读全文
posted @ 2013-08-13 16:14 Jiang, X. 阅读(3625) 评论(0) 推荐(0) 编辑

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