Rank 1:

       SIGMOD: ACM SIGMOD Conf on Management of Data
       PODS: ACM SIGMOD Conf on Principles of DB Systems
       VLDB: Very Large Data Bases
       ICDE: Intl Conf on Data Engineering

       CIKM: Intl. Conf on Information and Knowledge Management
       ICDT: Intl Conf on Database Theory

Rank 2:

SSD: Intl Symp on Large Spatial Databases
DEXA: Database and Expert System Applications
FODO: Intl Conf on Foundation on Data Organization
EDBT: Extending DB Technology
DOOD: Deductive and Object-Oriented Databases
DASFAA: Database Systems for Advanced Applications
SSDBM: Intl Conf on Scientific and Statistical DB Mgmt
CoopIS - Conference on Cooperative Information Systems
ER - Intl Conf on Conceptual Modeling (ER)

参考 http://www3.ntu.edu.sg/home/assourav/crank.htm

     摘要: That’s why I don’t want to hear people’s ideas.
I’m not interested until I see their execution.  阅读全文      摘要: 这两天在学习python，主要参考简明教程http://www.swaroopch.com/byteofpython/ ， 入门很不错，有兴趣推荐参考。
在16章中，作者建议读者写一个地址簿程序，还记得写它都是在大一学c语言的年代了，不过下午还是抽出了一点时间来写这个程序，写了两个版本，一个是使用python 字典来存储名字和地址，另一个版本则使用python的面向对象特性，来链式存储联系人对象。  阅读全文      摘要: 据说最近psp最近要升值了～无论是因为破解的原因还是什么，但总之估计sony还是很难想到，当然我们也很值得庆幸的是这帮hack的大牛已然将kvm，python stackless等移植到了psp平台，强大的ppc支持，可足以媲美几年前的personal computer，这一点毋庸置疑，更不用去与手机平台相对比了。  阅读全文      摘要: org.eclipse.jface.viewers.TreeViewer

的继承关系是  阅读全文 目前 ext已经全面升级了主站，而且也release2.1版本，并新增了一些例子。
最近发布的Firefox3 beta 5版本，个人认为还是比较不错，运行JS的也更快、上网速度也快了很多。
但经原来做的一些js程序测试，ext2.0版本运行在FF3Beta5上还存在一些显示问题。

     摘要: 昨天写了个关于图库的总结mail 在这贴下，以供参考，当然望不吝赐教  阅读全文      摘要: 前两天写了一个处理逻辑表达式的小程序，可以用来处理专家系统实事等逻辑关系表达式。  阅读全文      摘要: EasyMock 是一套通过简单的方法对于指定的接口或类生成 Mock 对象的类库，它能利用对接口或类的模拟来辅助单元测试。本文将对 EasyMock 的功能和原理进行介绍，并通过示例来说明如何使用 EasyMock 进行单元测试。   阅读全文      摘要: Craigslist的网站上没有图片，只有密密麻麻的文字，标着各种生活信息，是个巨大无比的网上分类广告加BBS的组合...  阅读全文      摘要: Trie树是一棵度 m ≥ 2 的树，它的每一层分支不是靠整个关键码的值来确定，而是由关键码的一个分量来确定。  阅读全文      摘要: For myself learning.
Personal Mastery  阅读全文      摘要: Have you read Jess In Action by Earnest J. Freedman-Hill? It's one of the better books out there on rule engines, though it does require some experience to get the most out of the book.
A variation on the bookstore could be recommendation engine. That would provide an opportunity to use a rule engine for direct matching on category/subcategory and aggregations.  阅读全文      摘要: IBM Dump Analyzer for Java是来分析虚拟机稳定性的一种可扩展框架。对Java虚拟机生成的产物进行自动诊断。  阅读全文      摘要: 实在忍受不了sun的做事风格和它的开发工具了，nb的beta6一踏糊涂一堆bug，唉~想着就想起来sun中国弄个nb插件的比赛不仅过程糟糕，获奖了居然还不兑现承诺，到现在也杳无音信，估计是证书也不想发了，真是让大家对它越发感到没有信心~~~~~~~~~不提这个了，还是讲讲Europa 和 myeclipse， 最近在写一个基于规则的引擎，用的Europa 和myeclipse6 感觉非常舒服，myeclipse的功能也大大加强了比如改进了javaEE5 提高了EJB3开发效率可以支持从数据模型到bean的转换，java的持久化程度及其Spring-JPA的高度集成。开发ajax的朋友可以发现 myeclipse对ajax的开发和测试做的也非常好，尤其是对js的调试。Web开发的另一个特点是支持RAD web。nb原来喊的一项特色是集成了matisse，在myeclipse目前也集成了它而且对于可视化swing开发非常方便，当然你也可以自己按照，不直接更新。
myeclipse中集成的derby和tomcat也大大加速了服务器的连接和部署，调试等。至于db视图个人使用oracle  阅读全文      摘要: Given a picture composed entirely of horizontal and vertical line segments, calculate the minimum number of times you must lift your pen to trace every line segment in the picture exactly n times.
Each line segment will be of the form " " (quotes for clarity), representing a segment from (x1,y1) to (x2,y2). Segments may cross each other. Segments may also overlap, in which case you should count the overlapping region as appearing in the drawing only once. For example, say t  阅读全文

posted @ 2007-10-30 21:36 wqwqwqwqwq 阅读(1173) | 评论 (0) | 编辑 收藏

Lottery Again

     摘要: In most states, gamblers can choose from a wide variety of different lottery games. The rules of a lottery are defined by two integers (choices and blanks) and two boolean variables (sorted and unique). choices represents the highest valid number that you may use on your lottery ticket. (All integers between 1 and choices, inclusive, are valid and can appear on your ticket.) blanks represents the number of spots on your ticket where numbers can be written.  阅读全文

posted @ 2007-10-24 21:20 wqwqwqwqwq 阅读(1194) | 评论 (1) | 编辑 收藏

A Q of Encrypting String

     摘要:
Let's say you have a binary string such as the following:
011100011
One way to encrypt this string is to add to each digit the sum of its adjacent digits. For example, the above string would become:
123210122  阅读全文

posted @ 2007-10-23 13:34 wqwqwqwqwq 阅读(1042) | 评论 (1) | 编辑 收藏

Maze Problem

     摘要: People enjoy mazes, but they also get them dirty. Arrows, graffiti, and chewing gum are just a few of the souvenirs people leave on the walls. You, the maze keeper, are assigned to whiten the maze walls. Each face of the wall requires one liter of paint, but you are only required to paint visible faces. You are given a map of the maze, and you must determine the amount of paint needed for the job.  阅读全文

posted @ 2007-10-21 21:28 wqwqwqwqwq 阅读(1448) | 评论 (1) | 编辑 收藏

TopCoder_2

     摘要: In written languages, some symbols may appear more often than others. Expected frequency tables have been defined for many languages. For each symbol in a language, a frequency table will contain its expected percentage in a typical passage written in that language. For example, if the symbol "a" has an expected percentage of 5, then 5% of the letters in a typical passage will be "a". If a passage contains 350 letters, then 'a' has an expected count of 17.5 for that passage (17.5 = 350 * 5%). Pl  阅读全文

posted @ 2007-10-21 20:14 wqwqwqwqwq 阅读(903) | 评论 (1) | 编辑 收藏

TopCoder_1

     摘要: A speed radar is installed in a highway zone where the maximum speed limit is maxLimit mph, and the minimum speed limit is minLimit mph.  阅读全文

posted @ 2007-10-20 13:25 wqwqwqwqwq 阅读(1250) | 评论 (1) | 编辑 收藏

Struts Review

     摘要: 好长时间没写程序了感觉，忘了很多东西，呵呵，今天打开Eclipse写了一个Struts的小应用，也回顾了一遍它的主要内容，这篇随笔就把整理的一些东西贴出来吧。  阅读全文

posted @ 2007-10-07 16:55 wqwqwqwqwq 阅读(989) | 评论 (0) | 编辑 收藏

拐点提取法在曲线拟合中的简单应用

     摘要: 本程序为优化，比较好的方法是，进行曲线积分，算误差比进行方程约束，由于时间比较少，稍候会给出优化程序。  阅读全文

posted @ 2007-08-14 17:27 wqwqwqwqwq 阅读(994) | 评论 (0) | 编辑 收藏

Stack Simple implement

     摘要: A simple implement of own stack  阅读全文

posted @ 2007-08-03 18:14 wqwqwqwqwq 阅读(984) | 评论 (0) | 编辑 收藏

To find a max segment in a array which includes negative and positive no.

     摘要: To find a max segment in a array which includes negative and positive no.There r several methods to solve this question.  阅读全文

posted @ 2007-07-31 12:45 wqwqwqwqwq 阅读(833) | 评论 (0) | 编辑 收藏

随感

     摘要: 今天很早的来到公司，首先查收了一下邮箱，发现5封新邮件，仔细的看了下都是关于我前天申请一个IBM USA那边的一个DB访问权限的邮件。  阅读全文

posted @ 2007-07-27 08:55 wqwqwqwqwq 阅读(281) | 评论 (2) | 编辑 收藏

@hotjava Smallworld&&PMI

     摘要: Sun has just announced the winners of netbeans plugin competition  阅读全文

posted @ 2007-07-21 23:34 wqwqwqwqwq 阅读(1126) | 评论 (0) | 编辑 收藏