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(1183) | 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(1202) | 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(1050) | 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(1457) | 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(913) | 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(1258) | 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(1004) | 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(1001) | 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(992) | 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(840) | 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(290) | 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(1133) | 评论 (0) | 编辑 收藏

PMI

     摘要: PMI(Performance MonitoringInfrastructure)   阅读全文

posted @ 2007-07-13 17:32 wqwqwqwqwq 阅读(1182) | 评论 (2) | 编辑 收藏

Sundries to && of myself

there r so many sundries during these days and almost every point is focussing on papers\projects\ ...\recommending data for my next master degree, but my thought just is in a mess, i cannot describe the stage && status except paying more attention,well,just feeling time is out of my hand.the only thing I am looking forward is the result of nb plugin competition and i will send the request and willing letter to the professors later but then.I m believing that though  have lost the opportunity of my target ~~God, it's so pity for a sudden change,at the same time, I stood with everything.I have got another time now and have prepared all the condition for the coming applying.thx in advance for my friends, because u have give a stage and some suporting.especially to stand^-^.TracyYan now has just rushing in && strangely,I find~~~~after six years,why not then, I have also no answers, may be pretty but not really for the feeling,~~~~~.
Yestoday I have collected some data about computer science department professors of pku, bless.
benny is a so kind person though he(she is a judge, but i really want to say,actually not to him.here the only puzzlement is why now after a month asking the method how to use the tool and why dont know the document which has contains all the info he want to know, I know, really, each guy is busy, busy with one's sundries,so many! Symptom.

posted @ 2007-07-11 22:19 wqwqwqwqwq 阅读(522) | 评论 (0) | 编辑 收藏

JFx~~~~builder

     摘要: 首先说点别的:),今天google adsense给我回信关于blog头搜索不好用的原因是嵌在了里。我评论的前两条是表扬google...  阅读全文

posted @ 2007-06-02 23:16 wqwqwqwqwq 阅读(1513) | 评论 (8) | 编辑 收藏

焦点关注

     摘要: 好长时间没写随笔了^^，主要是因为这几天很忙,ibm的、学校的、还有sun的插件大赛，但是这段时间自己确一直在学习，在继续关注技术的进展，随着这篇关注焦点，在之后的几天里，我会继续写一些，IBM SOA、SOAP、RBD、EGL还有我们HotJava的 SmallWorld等内容。
JavaFX当前是备受SUN推崇和重点推广的项目之一，也是Java技术继续演化的内容之一。  阅读全文

posted @ 2007-05-31 11:03 wqwqwqwqwq 阅读(1218) | 评论 (0) | 编辑 收藏

JNDI~基础

     摘要: 今天浏览网页，看见篇写JNDI比较基础，也比较详细的文章，又自己整理了一下，post到新手区了，。。。。：）JNDI是java访问名字和目录服务的接口，与JDBC一样，它仅仅只定义了一套服务接口，实现由具体厂商提供。作为j2ee核心组件之一，它为应用程序查找其他程序组件和资源提供了统一的接口，其中最常见的用途就是数据源的配置、EJB名字查找、JMS相关配置等。JNDI的架构如下图。在JDK1.3中...  阅读全文

posted @ 2007-05-14 23:33 wqwqwqwqwq 阅读(812) | 评论 (0) | 编辑 收藏

ITM

     摘要: 开篇，哈哈哈，我喜欢这句话“NO MONEY ONLY WORK DADADI”。
ITM provides out of box uses to quickly deploy and active the app with the best ibm practice.admins can define the user's views,threshold and so on.Tivoli Enterprise Monitoring Agents are available for monitoring different types of platforms and applications, including mainframes,middleware,distributed,and database...  阅读全文

posted @ 2007-05-11 23:00 wqwqwqwqwq 阅读(954) | 评论 (0) | 编辑 收藏

Little for ITM && CLI

     摘要: CLI command line interface ...  阅读全文

posted @ 2007-05-10 23:23 wqwqwqwqwq 阅读(985) | 评论 (0) | 编辑 收藏

F3(转http://blogs.sun.com/chrisoliver/entry/f3)

     摘要: 据说极有可能迅速取代目前流行的SWING和SWT技术。  阅读全文

posted @ 2007-05-07 22:30 wqwqwqwqwq 阅读(985) | 评论 (1) | 编辑 收藏

小“征”

北京今天有些风，但是依然挡不住本有的闷热。傍晚下楼吃饭，就像突然走进蒸笼一样的感觉，想象着眼前如果是大海该多好啊，说到这真是惭愧，我在大连待了20多年，居然不会游泳，哎~...吃完饭，我从上地佳园溜达到公司，休息了一下。本想着看点书，但是这个时候似乎是快到下班的时间了，看着白领一族的匆匆离去、联想围栏旁悠然自得的粉刷小匠，我突然萌生要离开这儿，去高校转转的念头。
绕过DASCOM沿着信息路来到了五街，在路牌下等者656...我真的实在受不了了太阳的直射和等车的烦躁，终于决定今天也学一次抗日前的长征，学一次开学前的军训，...自己走到北大，也算熟悉熟悉一路的环境。现在回来我真的发现这是一个了不起的决定，因为这实在太累，走去五环-北大-四环，又跑回上地，即使在地图上只能算作一指之距。想想先前走到北京体校时看见一个学生绕学校跑时的窃窃思绪，我更敬佩自己。脚累得很，但我也算是准备好了这段时间出门在外的辛苦...RuiRui，你说得很好，坚持久了，也就好了。

posted @ 2007-05-07 21:40 wqwqwqwqwq 阅读(441) | 评论 (0) | 编辑 收藏

标准字符集~

     摘要: 今天自己突然想起来整理一下标准的charset，感觉还算有必要。当然java...  阅读全文

posted @ 2007-05-06 19:50 wqwqwqwqwq 阅读(611) | 评论 (0) | 编辑 收藏

活生生

昨天来得北京，准备我以后几个月的实习生活。北京还是和我原来来的感觉一样，到处都是人流车流，太阳总是离得很近，风吹起的扬尘让我透不过气...唯一使人感觉现代感的和不很疲惫的就是坐着北京的城铁和地铁，起码它们不会因为宣泄而停滞。有些安慰的是坐在IBM的办公大厅，我喜欢IT深邃的魅力，和品茶的悠然...
昨天一天十分疲倦，或许正如跟个远方的小弟在instantChat上所谈的，这一天真的让我品到了生活的很多酸涩和劳苦，我渐渐发现走路也是一件非常非常累得事情，渐渐发现与人相处的道理和囊中的羞涩。其实昨天一天就花了我3千多，房屋的中介赚得很多感觉，1200的房子，中介费也要得1200，还有押金。不过房子我到是感觉还好，在上地佳园，至少感觉这的环境和保安还算可以，只是与人合租，不是很自在。
昨天也累坏了我一个高中同学，她陪我到处转了一天，真的很谢谢她。
不知道下一步会如何，但是我得准备好在这煎熬闷热、运筹自己的生活、学会太多太多...

posted @ 2007-05-06 12:24 wqwqwqwqwq 阅读(432) | 评论 (0) | 编辑 收藏