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Contents contributed and discussions participated by Roger Chen

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Roger Chen

課程管理系統的資料探勘：以Moodle為例 - 0 views

pulipuli.blogspot.com/...moodle.html

data mining papers

shared by Roger Chen on 19 May 08 - Cached
  • Roger Chen on 19 May 08
     
    Data mining in course management systems: Moodle case study and tutorial by: Cristobal Romero, Sebastian Ventura, Enrique Garcia Computers & Education, Vol. In Press(2007), Corrected Proof
Roger Chen

» 《连线》收购Ars Technica的启示 ⊙ 一言谈| New Media Observe - 0 views

www.caozenghui.cn/?p=300

internetwatch

shared by Roger Chen on 18 May 08 - Cached
  • 连线》杂志母公司CondéNast宣布收购Ars Technica，据TechCrunch最先的报道称大概在2500万美元左右，跟2006年收购Wired.com的价格齐平。Ars每月的独立用户在450万左右，略低于Wired.com。
  • Roger Chen on 18 May 08
     
    连线》杂志母公司CondéNast宣布收购Ars Technica，据TechCrunch最先的报道称大概在2500万美元左右，跟2006年收购Wired.com的价格齐平。Ars每月的独立用户在450万左右，略低于Wired.com。
Roger Chen

» 互联网媒体只会更精英化 ⊙ 一言谈| New Media Observe - 0 views

www.caozenghui.cn/?p=299

internetwatch social media

shared by Roger Chen on 15 May 08 - Cached
  • Roger Chen on 15 May 08
     
    事实上，互联网媒体正在越来越精英化。从最早依靠转载起家，到过去的互联网媒体的初阶段原创化，紧接着的是现在，互联网媒体的细化竞争，也就是分领域专业化，结果是什么呢？
Roger Chen

迷途不返◎笑骂江湖 » 关于草根与精英的随感随写 - 0 views

ifire.cn/20080515

shared by Roger Chen on 15 May 08 - Cached
  • 我其实一直对“草根”这词很不感冒，这个称谓更象是媒体赋予的骗局。事实上，多数的“草根”仍是被忽视或仅仅被当作基数提及的，而以“草根”身份成名的作者，正逐渐演变为新的“精英”，甚至这些知名“草根”们都有成为“精英”的欲望
    • Roger Chen
      Roger Chen on 15 May 08
       
      Good point. 所謂的「草根」們，都有成為精英的渴望。真正的草根，可能不知道互聯網是什麼東西。
  • “草根”是媒体赋予那些未成名的作者的一个定义，但真正的“草根”其实是那些被当作基数的网民，我们当然不可能忽视“草根”群体的存在，我们只是不可避免地忽视了他们做为个体存在的意义。
  • 互联网是为人服务的，因此不要妄想互联网改变人性，事实上互联网放大了群体的人性特征，基数越大，金字塔的顶端越是高得结实。理论上说，任何一个领域都不存在直上直下的基数与顶点的形态，更不用说倒金字塔形态了，“草根”压倒“精英”这根本就是违背人性的伪命题。
    • Roger Chen
      Roger Chen on 15 May 08
       
      好個「偽」命題。
  • ...1 more annotation...
  • 偷换概念好像也是刘韧先生文章的一大特点。至于“新闻借着互联网回到百姓手中”这话就更怪了，如果说互联网让老百姓更容易获得真实的新闻甚至参与提供真实的新闻，这倒可以理解，但“新闻回到老百姓手中”？这我实在看不懂。
    • Roger Chen
      Roger Chen on 15 May 08
       
      這是巧合嗎？
Roger Chen

Lorcan Dempsey's weblog: Recommendation and Ranganathan - 0 views

orweblog.oclc.org/...001566.html

recommender

shared by Roger Chen on 15 May 08 - Cached
  • Now, typically library catalogs use traditional information retrieval techniques over professionally produced metadata. This is not a lot of data to play with! We have just begun to see interesting things being done with the other types of data as libraries explore the use of transactional data for recommendations and look to incorporate contributed data.
  • Google, Amazon and other sites license professionally produced metadata. But in different ways they also use the other types of data also.
  • Suggestion, or recommendation, is becoming increasingly a part of our everyday web experience,and improving the quality of suggestion has become an important goal for many services. Clearly, there are commercial interests riding on this.
  • ...2 more annotations...
  • "The 20th century was about sorting out supply," Potter says. "The 21st is going to be about sorting out demand." The Internet makes everything available, but mere availability is meaningless if the products remain unknown to potential buyers.
  • When I get good recommendations, I spend my time and money differently. Even better recommendations will dramatically increase the value of that time and money.
Roger Chen

Military Analysts - 0 views

www.dod.mil/milanalysts

data mining

shared by Roger Chen on 15 May 08 - Cached
  • Roger Chen on 15 May 08
     
    These documents were released to the New York Times regarding the Pentagon's Military Analyst program.
Roger Chen

Geeking with Greg: Yahoo, Hadoop, and Pig Latin - 0 views

glinden.blogspot.com/...ahoo-hadoop-and-pig-latin.html

papers

shared by Roger Chen on 15 May 08 - Cached
  • Roger Chen on 15 May 08
     
    Chris Olston, Benjamin Reed, Utkarsh Srivastava, Ravi Kumar, and Andrew Tomkins from Yahoo have an upcoming paper at SIGMOD 2008, "Pig Latin: A Not-So-Foreign Language for Data Processing" (PDF), that details Yahoo's work to build a powerful parallel processing language on top of Hadoop.
Roger Chen

Michael Nielsen » Open science - 0 views

michaelnielsen.org/blog

academia thinking

shared by Roger Chen on 14 May 08 - Cached
  • Scientific papers represent only a tiny fraction of the useful knowledge that scientists have to share with the world:
Roger Chen

The way young Chinese surf the net - CNNIC report - 0 views

web2web3.blogspot.com/...ay-young-chinese-surf-net.html

internetwatch.china

shared by Roger Chen on 12 May 08 - Cached
  • Roger Chen on 12 May 08
     
    In April 25, 2008 China Internet Network Information Center (CNNIC) issued the Research Report of China Youth Internet Behaviors. Data shows that till the end of 2007, the number of young web users (under the age of 25) has reached 107 million, which is about half of the overall size of Chinese Internet users.
Roger Chen

State of the Music Industry - Duke Listens! - 0 views

blogs.sun.com/...state_of_the_music_industry

internetwatch music thinking

shared by Roger Chen on 12 May 08 - Cached
  • Music is really long tail - in 2007, 450,344 of the 570,000 albums sold were purchased less than 100 times. 1,000 albums accounted for 50% of all album sales.
  • CD sales are down 31% since 2004, but digital music sales are up 490%.
  • Surprisingly, Vinyl sales are coming back - they grew 15% in 2007 and are up 70% in the first 3 months of this year. Mostly in indie vinyl.
  • ...1 more annotation...
  • 80,000 albums were released in 2007
Roger Chen

python-twitter - Google Code - 0 views

code.google.com/python-twitter

python tools twitter

shared by Roger Chen on 12 May 08 - Cached
  • Roger Chen on 12 May 08
     
    This library provides a pure python interface for the Twitter API.
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