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Contents contributed and discussions participated by Roger Chen

Roger Chen

Paper: MapReduce: Simplified Data Processing on Large Clusters | High Scalability - 0 views

  • Some interesting stats from the paper: Google executes 100k MapReduce jobs each day; more than 20 petabytes of data are processed per day; more than 10k MapReduce programs have been implemented; machines are dual processor with gigabit ethernet and 4-8 GB of memory.
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    Google executes 100k MapReduce jobs each day; more than 20 petabytes of data are processed per day; more than 10k MapReduce programs have been implemented; machines are dual processor with gigabit ethernet and 4-8 GB of memory.
Roger Chen

UBC Academic Search - Another Impact Factor Metric - <i>W-index</i> - 0 views

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    A new index measuring a scientist's impact in his/her field has been developed called the Wu index or w-index. Developed by Qiang Wu from the University of Science and Technology of China in Hefei, it was published as The w-index: A significant improvement of the h-index in this week's Physics arxiv.
Roger Chen

科学松鼠会 » Blog Archive » 创造力公式 - 0 views

  • 1、你一定要觉得你自己的问题有趣而又重要,否则你就不会有激情,不会投入。 2、你一定要有能力解决问题。假如不能完全解决问题,起码你要问自己能够做些什么。 3、除了你自己的肯定,如果还有人也认为你的问题很重要,且这样的人越多越好。
  • C代表Creative Power创造力,K代表Knowledge知识,I代表Information信息,T则是Thinking思考,Q是Quarrel讨论,L是Logic Reasoning逻辑推理,E是Experiments实验,W是Wide Field广博的领域,H则代表Hell地狱。这样看来,创造力就等价于:汇集知识与信息,然后不断思考并反复讨论,再利用逻辑推理和实验在广博的领域里积分的结果。
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