楼主: oliyiyi
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【latex版】水贴   [推广有奖]

621
oliyiyi 发表于 2015-7-31 18:32:42
不要再查少林方丈私生子问题了。上一次还发生在遥远的北宋年间,萧远山执意纠结,费尽30年,查清了真相,但结果呢?是一场武林大劫,武林奇人萧峰为此殒命,段誉孤悬大理,少林清誉全毁,贤达慕容一枝不复存在,中原丐帮元气大伤。太可怕了!

622
oliyiyi 发表于 2015-7-31 18:44:45
wow from the comments alone i got so many interesting Tutorials..thank you for writing this article...

623
oliyiyi 发表于 2015-7-31 18:45:56
You might be tempted to use the JPEG (aka .JPG) graphics format for the final product on the Web, but this is almost certainly a bad idea.  JPEG works fine for photograph-like images, but introduces blurry artifacts around lines and letters for the typical R graph.  You might save a few kilobytes in the file size by using the jpeg device driver or converting your PNG into .JPG, but only at a significant expense in quality.

624
oliyiyi 发表于 2015-7-31 18:54:00
In the plot above you see that the text at the point (0,0) is left-aligned, horizontally as well as vertically. On the other hand, the text at point (1,1) is right-aligned in horizontal as well as vertical direction. The point (0.5,0.5) is right in the middle: it’s not really left-aligned nor right-aligned for what concerns the horizontal and vertical directions.

625
oliyiyi 发表于 2015-7-31 19:05:40
TATS 191: Introduction to Applied Statistics
Statistical tools for modern data analysis. Topics include regression and prediction, elements of the analysis of variance, bootstrap, and cross-validation. Emphasis is on conceptual rather than theoretical understanding. Applications to social/biological sciences. Student assignments/projects require use of the software package R. Recommended: 60, 110, or 141.
Terms: Win | Units: 3-4 | UG Reqs: GER:DB-Math | Grading: Letter or Credit/No Credit

626
oliyiyi 发表于 2015-7-31 20:33:12
微软吃下诺基亚设备与服务部门的时候,收入的功能型手机业务规模可是不小。但在那之后,他们似乎并无心发展此类产品,而且根据 Strategy Analytics 最新的统计来看,华为已经将其甩在身后,凭借第二季中 3,060 万台的手机出货总量,坐上了全球第三大手机厂商的位子。和一年前相比,这个数字增长了差不多 50%,华为目前已拿到了全球手机市场 7% 的市占率,而前两位的三星和苹果则分别拥有 20.5 的份额。

627
oliyiyi 发表于 2015-7-31 20:33:56
如果你是已经升级了 Windows 10 的一千四百万分之一的话,应该已经注意到,更新完成后默认浏览器已经变成了全新的 Edge。就是这件事,让 Mozilla 感到很「困扰」,而且更让他们不爽的是,如今 Win 10 用户将其它浏览器设为默认的步骤要比过去更麻烦。CEO Chris Beard 甚至专门给微软老大 Satya Nadella 发去了一封公开信,直言这样的变化「令人困惑、难以掌握而且会让人没有方向」。

628
oliyiyi 发表于 2015-7-31 20:41:03
蒙特卡罗方法是一种计算方法。原理是通过大量随机样本,去了解一个系统,进而得到所要计算的值。

它非常强大和灵活,又相当简单易懂,很容易实现。对于许多问题来说,它往往是最简单的计算方法,有时甚至是唯一可行的方法。

629
oliyiyi 发表于 2015-7-31 20:42:37
它诞生于上个世纪40年代美国的"曼哈顿计划",名字来源于赌城蒙特卡罗,象征概率。

630
oliyiyi 发表于 2015-7-31 20:43:13
这一方法源于美国在第二次世界大战进研制原子弹的"曼哈顿计划"。Monte Carlo方法创始人主要是这四位:Stanislaw Marcin Ulam, Enrico Fermi, John von Neumann(学计算机的肯定都认识这个牛人吧)和 Nicholas Metropolis。

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