2006年全球搜索引擎战略大会（SES）17-18日在南京召开，受主办方的慷慨邀请，使我有机会去现场感受和学习，收获很多。
开幕的重头戏是搜索引擎观察执行总编Chris Sherman与Google大中华区销售和业务发展总裁周韶宁、雅虎中国/阿里巴巴首席执行官马云的两场对话。周韶宁的演讲见Google黑板报。马云的演讲要点有（依据笔记，严重不全，也未经审核）：
优势和资源不同，两场对话也就各有所指。在搜索这样一个并不宽敞的市场里，能有如此相异的发展思路共存，总要比同质化的你死我活互相堵路有意思得多。至少方向不同，可以各走路桥，搜索的影响也能渗透到更多的方面，最终所有的参与者都将受益。
1. Why are there so many freakin' photographs and stories about Lei Feng?
To address this question, we look at an excerpt of the new Lei Feng biography (Lei Feng 1940-1962). The passage below is taken from the chapter "Lei Feng's 19 poses."
In February, 1961, the Chinese army reached a high point of "Learn from Lei Feng." The Shenyang military district decided to conduct a traveling exhibition put on by the political department and the 10th regiment where Lei Feng was stationed. The group in charge of planning the exhibition prepared to use photographs to reflect events after Lei Feng entered the army, and to do this, they would have to reshoot a number of pictures.
The Shenyang military district engineering commander issued an order concerning the reshoot of Lei Feng pictures: Photography must be real, and it must reflect Lei Feng truly doing good acts.
Zhang Jun was given the order to put together a draft of the contents for the Lei Feng photo reshoots. The outline for the reshoot used as its resources the September 1960 designation of Lei Feng as an "Economizing Model Soldier," the records of his deeds After Liberation I Had a Home; My Mother was the Party and Bitter Recollections and Sweet Thoughts, and his own diary and personal statements.
After this photo shoot outline was authorized by the leadership, Ji Zeng was made responsible for shooting the photos during the half-month around the Spring Festival. At that time, nearly 20 photos were taken; the photos are familiar to the public who saw them at the exhibition. According to Zhang Jun's outline at the time, the photos are as follows (in parenthesis are Zhang Jun's shooting notes):
- Lei Feng, wearing a hat with a Mao pin, stands in front of a bust of Chairman Mao holding a machine gun (this should be used as the first photo at the entrance to the exhibit room).
- Helping the elderly and the young (shot according to the "taking care of an old woman" scene in After Liberation I had a Home; My Mother was the Party, chapter 5).
- Giving his brother-in-arms Wang Yan a lunchbox (shot according to Lei Feng's diary entry for 21 October, 1960: "I found comrade Wang Yan sitting apart watching everyone eat lunch. He answered, 'This morning I ate two boxes, so I didn't bring any food.' So I took my own lunch box and gave it to him to eat. Even though I was a little hungry, letting him eat his fill was my greatest happiness...'").
- Bringing mooncakes to the infirm at the east hospital in Fushun (shot according to Chairman Mao's Good Soldier: "This autumn festival, when Lei Feng picked up the mooncakes that had been distributed by the company, tears welled up in his heart. From 15 August, he thought back to his mother's death on 15 July, and he couldn't eat his mooncake. He wrapped it in paper, wrote a tearstained condolence letter, and sent it to the local Kuangshan hospital, offering his condolences to his class brothers who were ill or who had been injured while building socialist society.")
- Going to the bank to withdraw 200 yuan (shot according to After Liberation I had a Home; My Mother was the Party, chapter 7: "...I thought, a newly-established people's commune will certainly have many problems. I am a PLA soldier, so I must use real actions to provide help. Thinking of these things, I went to the bank and withdrew 200 yuan....").
- Reading Selections from Chairman Mao at night with a flashlight (shot according to Lei Feng's report "Bitter Memories and Sweet Thoughts": "Only by understanding revolutionary truth can one become a good soldier for Chairman Mao. I want to actively study Chairman Mao's works. Sometimes I won't put down my studying even in the bathroom. The army mandated lights-out at 9:00, so I bought a flashlight and study under my covers...").
- Shoveling manuer to help the Liaoning People's Commune (shot according to Lei Feng's report "Bitter Memories and Sweet Thoughts": "I've studied all of the documents from the 8th Plenary Session of the CPC 8th Central Committee, and I thought to myself, what can I do for the People's Commune? If I collect manure for fertilizer, I can collect more than 500 pounds in a month and send it to the commune. If the commune wants to figure the money, I'll say that I don't have any gift to give to the commune; this manure is my gift").
- Helping Qiao Anshan study culture (shot according to After Liberation I had a Home; My Mother was the Party, chapter 4 ("Give all my knowledge to everyone"): "Our comrade Qiao Anshan is less educated than other people. He doesn't have enough confidence in his studies. His head hurts whenever he studies math. He doesn't bring a notebook to class, and sometimes skips classes. One day, I had him do homework, but he said his pencil had gotten lost. I gave him mine, and helped him staple together an homework notebook. This got to him - his enthusiasm for his studies gradually improved, and his test scores weren't that bad. I finished my teaching duties on time...").
- Organizing his brothers-in-arms to study Mao Zedong's works on the car lot (shot according to Lei Feng's 1960 entry entitled "Feelings one year after entering the army": "I should seize extra time to further my studies. I should never be without a book about me, and when I have time, I should take it out and read for a while, steadfastly studying, thinking, correcting, and applying...).
- Practicing the essentials of grenade-throwing by himself and learning from the platoon leader (also shot according to Lei Feng's 1960 entry "Feelings one year after entering the army": "When I entered the army, I didn't know how to throw a grenade. Holding even a fake grenade would set my heart jumping. Every time, I couldn't throw much more than ten meters. The officers and my brothers-in-arms taught me the "essentials," and the platoon leader took my hand to teach me, letting me obtain an excellent performance in grenade throwing...").
- Lei Feng practicing on the parallel bars (shot according to Lei Feng's report "Bitter Memories and Sweet Thoughts").
- Lei Feng darning socks (shot according to Lei Feng's After Liberation I had a Home; My Mother was the Party, chapter 7: "My comrades say that my socks look terrible, but after darning them I still wear them").
- Reading the newspaper aloud during a rest on a march (shot according to Lei Feng's After Liberation I had a Home; My Mother was the Party: "...I volunteered to be a part-time instructor. I taught Chinese language arts and arithmetic, and most comrades reacted well. But some comrades didn't pay attention...").
- Writing responses to letters from local people (after Lei Feng's stories were printed in newspapers, the local people wrote lots of letters to comrade Lei Feng. Shot according to the needs of the exhibition layout).
- Maintaining and repairing cars (shot according to Lei Feng's stories about his hard practicing to learn to drive, his attention to car maintenance, and his timely repairs).
- Group photo with the students of Fushun's Jianshe Street primary school (shot according to Lei Feng's frequent practice of using his time off from tutoring to participate in extra-curricular activities at this school).
- Lei Feng sends 10 yuan to the home of his brother-in-arms Qiao Anshan (shot according to Lei Feng's stories and according to the needs of the exhibition).
- Lei Feng withdraws 200 yuan from the bank, and delivers it to Fushun's Wanghua District People's Commune in person (shot according to Lei Feng's After Liberation I had a Home; My Mother was the Party: "I went to the bank to withdraw 200 yuan. I went to a commune in Wanghua District and explained why I had come. The commune officials said that they would take my sentiments, but that they would not take my money. After a long discussion, the commune took 100 yuan. Shortly after, there was an article in the newspaper that said there had been a huge, once-in-a-century flood in Liaoyang. I took the 100 yuan that the commune hadn't taken and sent it to the committee at Liaoyang, asking them to deliver it to the people in the flooded area...").
- Lei Feng speaking for newly enlisted soldiers (shot according to Lei Feng's After Liberation I had a Home; My Mother was the Party, chapter 2, "The day I enlisted" and his stories).
Through the above outline, we find that Lei Feng's own writings or records of his speeches were instrumental in shooting Lei Feng's "documentary photographs." During the 1950s and 60s, propaganda photos and writings were administered together, and had stringent ideological and discipline-related requirements.
Photographing Lei Feng was a technical element in the greater propaganda effort. Lei Feng's own writings unwittingly became the "script" in the photographers' plan.
2. What has the Fengster been up to lately?
Why, blogging, of course. His latest entry on the Diary of Lei Feng blog on Sina goes like this:
In March of each year, lots of people start to study me.
This kind of thing has gone on for years and years.
Sometimes, when I'm helping other people, I'll unconsciously think to myself, "I'm learning from Lei Feng," and feel a sincere joy.
Sometimes I'll forget that Lei Feng is really me.
Me, learning from an even higher me. Sometimes this problem baffles me.
Unfortunately, it looks like Lei Feng has been busy the past month - his last update was on 21 February. Maybe he's been off testing his video game.
今天看：
其中谈到了Amazon的a9.com中的搜索历史等功能对于用户的帮助。忽然想到Google的搜索结果页上有一个不怎么常用的相关网站功能：其实是一个很有用“发现”的功能，这种发现完全是不基于“字面”的，我感觉是经常看当前网网站的人，还经常看哪些内容的用户群体统计结果。
具体是怎么实现的呢？设想了一个实现的方案：在搜索结果中（也许是Toolbar/搜索历史等来源）将用户每次点击都记录下来，然后根据域名汇总：然后建一个用户=>访问过的网站的反相索引。通过统计就可以发现：点击chedong.com上内容的用户，还经常去看哪些网站。当然：如果超市中“牛奶”是几乎每个人都购买的，就不应该出现在“牙膏”的相关推荐中，而"牙刷"就是一个比较好的推荐。因此还需要根据这些网站的流行度和同现度综合加权，就找到了当前网页(网站)的相关网页。尿片和啤酒的经典统计案例应该也是类似的机制。
Amazon的买了这本书的人：同时还喜欢什么书。豆瓣的“猜你会”喜欢什么书。应该也是类似机制实现的。
请教：
在数据挖掘中：这种同现度的发现机制的专业说法（术语）应该是什么？
目前有那些已经实现的方案和统计工具？
昨天早上飞北京，在飞机上，一向不看报纸的自己，也迫不及待改变这个习惯，为的就是看这次枪战案的后续，今天上飞机，有新鲜运到的香港报纸，马上继续关注这个案件。
不知道为什麽，每次看到有关这次枪战案的报道，心里面总是酸酸的，虽然不认识这些警察，但是看着那些照片，看到参与抢救过程的警察们哀伤的脸，还有他们的家人伤痛欲绝的样子，自己的眼睛也变得湿湿的，也许，这件事情，发生的距离自己太近了。
星期五凌晨一点多，在尖沙嘴一条僻静的行人隧道，两名军装巡逻警察，在截查一名独行男子的时候，双方发生枪战，结果造成两名警察一死一伤，疑匪被当场击毙。现场传出的消息，在疑匪的身上，查获一张警员证，一张警员俱乐部的会员证，之后警方证实，这名死者，是一名下了班的现役警员，名叫徐步高，三十五岁。
而更令大家哗然的是，当时他使用的手枪，和五年前已经被匪徒杀害的警员所丢失的手枪，编码上面有三个号码是一样的，加上警方到目前为止，只丢失了一把佩枪，因此警方相信，这把枪就是当年殉职警员丢失的那把，目前正在进行最后的认证。
提起五年前的那宗案件，在香港也引起了轰动，那是在零一年的三月十四号，当时23岁的警察梁成恩，在上门调查一宗噪音投诉案的时候，被人袭击，抢去佩枪，并且向他近距离连开五枪，同时抢走了他的枪袋和快速入弹器。事后警方经过调查，发现噪音投诉案是有人用手提电话虚报的，目的就是要杀警夺枪。警方悬赏一百万，但一直没有消息。同年十二月，一名独行匪徒抢劫恒生银行，打死一名护卫，抢走了五十万港元，根据现场留下的子弹的来福线，警方发现，和梁成恩的佩枪使用的子弹一样，但是由于匪徒带着面罩，虽然拚出了疑匪的样貌，但却一直没有找到凶手。这两宗案件，一直成为悬案。直到星期五，这把五年前的枪又出现了。警方同时发现，当年的抢劫银行的疑匪的样貌，和徐步高原来非常相似。
警方高层说，这是一宗给警队极大打击的案件。这名徐步高，01年的时候，和梁成恩在同一个警署，所以对于地形，还有对方的行动习惯都非常的熟悉。但是梁成恩的悬案是不是因此而水落石出，还需要警方最后论证。说起徐步高，曾经在警队的考试中取得优异的成绩，平时的表现也受到上司的赞赏。不过，每次的升职考试，总是不能够通过，有人分析，可能这就造成他采用暴力犯罪行为来证实自己的原因，因为累积的挫败感，让他走上了极端。
二宗经历了五年的悬案可能因此而破解，但是却赔上了又一个警察的性命。当年梁成恩殉职之后，他的未婚妻遭受人生巨大打击，就在对生命失望的时候，他们的遗腹子让她有了活下去的勇气，成为当时的一段佳话。面对传媒的追访，这位女子发表了一封书面的声明，对于在这次枪战中殉职警察的家人表示慰问，也希望伤者尽快康复。死者已去，家人却要承受极大的悲伤。而徐步高的家人，还有他年幼的女儿，所要承受的，不单单是亲人离去的哀痛，还有这个真相带来的沉重负担。就在昨天，徐步高的妻子和母亲也来到了枪战现场拜祭，事后徐的亲属向传媒透露，她的妻子在拜祭的时候希望，用爱和宽容来化解这股戾气。
如果是孤家寡人，做事情只需要为自己负责，但是作为家庭的一员，自己的所作所为，却往往可能为身边人带来无穷的痛苦。最无辜的就是徐步高的家人了，特别是他的女儿。
不过这宗案件还没有了解，因为有报道指，现场发现开了十一枪，但是两名警员只有十发子弹，而且为何徐步高要向两名警员下手，而不挑选一个，因为根据现场调查，发现凶手是刻意等候警员经过，还有案发后徐步高的电单车不知所终。警方怀疑在警队内还有徐的同党，正在进行追查。
整个枪战过程三分钟，到底怎样，很大程度需要现场唯一的生还的警员的口供，不过因为伤势的原因，目前这名警员还不能够录口供。不过不管怎样，五年前的失枪又出现了，真的让人相信，天网恢恢，疏而不漏。
From the New York Times:
China May Release Jailed Times Researcher, Lawyer SaysBy Jim Yardley
BEIJING, March 17 — Chinese authorities on Friday withdrew at least part of the case against a Chinese researcher for The New York Times, in a surprise legal maneuver that left unclear whether he would soon be released as President Hu Jintao prepares to visit the United States next month.
The China Daily has published an article, taken from CRI titled: China's innovation campaign: dos and don'ts.
The article starts with this cryptic statement:
China has launched a national campaign to enhance its capability for innovation. But experts advise that does not mean China always has to be the original inventor.
The article extensively quotes Nobel Prize winning economist Joseph Stiglitz, who recently attended "a seminar recently held by the China Center for Economic Research of Peking University".
If you would like to contribute to innovation at The China Daily, they are advertising jobs for editors and writers; see the link below.
