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通信录大部分都在。有一个号码:13439707132,不知道是谁的。急切想知道,请知道的朋友看到日之后告诉我。

订婚戒指(2009-11-21 21:05)

(*^__^*) ……

http://cg.cs.tsinghua.edu.cn/people/~cmm/

 

前几天我们的PhotoSketch访问量剧增。服务器是个很老的机器,原来的动态主页挂掉了,换了新的静态主页,变简单了很多。

[转贴] 流形学习简介(2009-09-03 19:53)

转自:http://rainme.ycool.com/post.1976607.html

 

流形学习是个很广泛的概念。这里我主要谈的是自从2000年以后形成的流形学习概念和其主要代表方法。自从2000年以后,流形学习被认为属于非线性降维的一个分支。众所周知,引导这一领域迅速发展的是2000年Science杂志上的两篇文章: Isomap and LLE (Locally Linear Embedding)。

1. 流形学习的基本概念

那流形学习是什莫呢?为了好懂,我尽可能应用少的数学概念来解释这个东西。所谓流形(manifold)就是一般的几何对象的总称。比如人,有中国人、美国人等等;流形就包括各种维数的曲线曲面等。和一般的降维分析一样,流形学习把一组在高维空间中的数据在低维空间中重新表示。和以往方法不同的是,在流形学习中有一个假设,就是所处理的数据采样于一个潜在的流形上,或是说对于这组数据存在一个潜在的流形。对于不同的方法,对于流形性质的要求各不相同,这也就产生了在流形假设下的各种不同性质的假设,比如在Laplacian Eigenmaps中要假设这个流形是紧致黎曼流形等。对于描述流形上的点,我们要用坐标,而流形上本身是没有

     济南的社会实践终于快要结束了。终于不用在火炉里忍着了。想念有褥子有床单的床,想念有被子盖的日子,想念装了门的房间,想念学校食堂的饭,想念FIT楼的网络...

     为什么社会实践不是自己去找呢?不知学校是怎么想的。

之前单核的时候得6七个小时才能跑完了。现在40分钟就搞定了。真帅!

过一阵子在实验室搞个集群计算的。哈哈,把空余的资源都用起来。

From: http://www.helpwithwindows.com/WindowsVista/Fix_Wi

 

Windows Vista finds itself making assumptions about your folders' content - we all know how we were told in school to remember the spelling right? Assume? Don't assume; you'll make an ass out of u and me. Something the Microsoft engineers forgot to take into account.

I can't count the times I open a folder and find that Vista thinks it should contain pictures, so it shows the columns Name, Date taken, Tags, Size and Rating. The example below shows a partition (in this case not a folder) containing Microsoft Virtual Machines and Virtual Hard Drives (part of Microsoft Virtual PC) that Windows Vista assumes to be pictures.

 

 

Summary of Stephen R. Covey's

 

The 7 Habits of Highly Effective People


In his #1 bestseller, Stephen R. Covey presented a framework for personal effectiveness. The following is a summary of the first part of his book, concluding with a list of the seven habits.

Inside-Out:  The Change Starts from Within

While working on his doctorate in the 1970's, Stephen R. Covey reviewed 200 years of literature on success. He noticed that since the 1920's, success writings have focused on solutions to specific problems. In some cases such tactical advice may have been effective, but only for immediate issues and not