Monthly Archives: September 2021

写在9.10中国教师节

每年的9月10号,是中国的教师节。从小学、初中、高中、大学和研究生,所遇到的老师都是尽职敬业和蔼,有的已经离我们远去。

以前每次回国,总会去看望他们,聊聊天,说说共同的记忆。疫情使得回国成了奢侈不可做的事情。

祝老师们身体健康,万事如意。虽然我们都已经老了,不变的是共同美好的记忆。

骑行新加坡河

下午天气很好,等过了5点,气温稍微降了,打算从住家Queenstown骑行新加坡河。

沿着骑行车道,河两侧都是高档公寓和旅馆饭店。虽然疫情看似严重,病例增多,挡不住人们出门吃饭聚会的欲望。当然人数比疫情前少很多。

进入市区,沿河边一边是金融区的高楼大厦,一边是新加坡国家博物馆。在新加坡博物馆附近,有不少准新人在拍婚纱照。

远远望去,河对岸是著名的金沙赌场,楼顶上矗立着船型的游泳池。在游泳池里可以俯瞰新加坡的全景。

然后进入摩天轮附近,因为疫情,摩天轮上没有看到乘客。

F1赛道

摩天轮旁边的路很宽,刷着鲜艳的颜色,还在想怎么看着像F1的赛道。

Singapore F1

这么多年,还是第一次跑来看F1赛道,F1的从这里开始。

天有点黑了,返程回家。让我们看看新加坡的夜景。

Cookie – Tracking user behavior & recommendation

Cookie is a short code to tracking user behavior when surfing in the internet, reading news and article, watching video and podcast and audio program. From cookie collected data, we can understand who, which, where and when content clicked and dwelling time. When you google, google cookie will assign a unique identity (UUID) to you, and trace you, similarly when you Baidu, Bing. But the UUID is different in Google, Baidu, Bing because UUID is not cross browser. But when you login different browsers using same Email account, these UUIDs can be linked and identified as a single user.

Different cookie is used to track different user behavior. For example, cookie tracking user surfing news is different from tracking user watching TV program, or listening radio channel. Third-party cookie service is often used in media company to support news recommendation, audio program recommendation, video program recommendation. There are many DSP (data side platform), DMP (data management platform), and SSP (supply side platform) to provide technology services, e.g. cxense, lotame, ……

Media company often requires customized recommendation system. Third-party service provides cookie and widget toolkit to satisfy customized requirement. For news recommendation, through the widget setting, the customer can configure news category, keyword, name entity, term weighting, period, blacklist & whitelist. These functions can satisfy basic business requirements on news recommendation. This is traditional information retrieval application in news, and cannot do personalized news recommendation, which is widely applied in Google, Facebook or Microsoft Bing search. In-house data science team can exploit internal audience data to understand user interests, build machine learning model to do personalized recommendation. In practice, most companies have no such capability.

For audio / podcast and video program recommendation, most of time, it is still treated as a text information retrieval problem. These program have meta text description such as caption, short description of program, editors or reporter names, program director and actor names. Using these available meta data, recommendation can fulfill most business requirements. Audio and video/image processing and content understanding are not widely used. It is not only because of less manpower capability but also because of hungry computing resources to processing audio and image. In terms of ROI (return on investment), they may not be a good investment.

20-year 911 memory, 911这20年

In the evening, Sept. 11, a normal day, lying on tatami and watching TV. I was a researcher in ATR (Advanced Telecommunications Research Institute International), Nara, Japan at that time. Suddenly the well-known video scene was showing on news. I cannot imagine it is real. Friends called me, and confirmed true.

9.11 marks one relatively peaceful world ending. The world is becoming more and more turbulent. Big brothers are becoming more and more non-collaborated.

Any extra-power, which tries to change other country’s culture, always failed. Changing of country culture must be pushed internally, particularly from the majority people of the country in the bottom.

911发生的时候,我博士刚毕业,加入位于日本奈良的ATR(国际先进科学技术研究所)。这是一个平平常常的夜晚,我躺在榻榻米上看电视。然后就看到新闻,就是世贸大厦被撞的那些镜头。当时难于相信这是真的,怎么可能发生呢。朋友随后打来电话,说这是真的。

911标志着一个新的历史开始了。之前的世界虽谈不上和平,但还说不上多动荡。911之后的世界越来越动荡,恐怖主义、地区分离主义如火如荼。在加上某些国家对待恐怖主义的双标,使得消灭恐怖主义愈发困难。

911的真正教训以及最近的美国从阿富汗撤军,深刻说明外来力量是不可能彻底改变一个国家的文化的。改变的只是这些国家的精英,而绝大多数的中下层民众则很难改变。如果一个国家的文化不能彻底改变,这个国家不可能有彻底改变的,而文化的改变则是一个长期的任务,特别是要有一组精英已为国家未来着想的角度,对国民做长期的教育。可悲的是,现在世界上的大多数国家的领导层,都是短视的,利己的。

如果一个国家不能改变,就让它自生自灭吧,历史说明,只有当内部要求变革的力量和外部先进文化的双重压力,才会有大的变革。