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Reading Research Papers Critically

Reading Research Papers Critically. Brad Karp UCL Computer Science. CS M038 / GZ06 19 th January, 2009. Why are we here?. Learn fundamental problems in networked systems Design for scalability, robustness in large-scale, aggressively distributed systems

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Reading Research Papers Critically

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  1. Reading Research Papers Critically Brad Karp UCL Computer Science CS M038 / GZ06 19th January, 2009

  2. Why are we here? • Learn fundamental problems in networked systems • Design for scalability, robustness in large-scale, aggressively distributed systems • Gain perspective on competing designs • Learn to think critically about quality of research papers; so you can do good research yourself; acquire taste • Ground rules: • Feel free to criticize or defend a paper, or my take on it! • Any comment can lead to (bounded) discussion!

  3. Evaluating a Paper • Important, relevant problem? Clever? Orthogonal! • Reasonable assumptions and models? • Longer ago published, more you can judge based on impact: • Does everyone now use systems derived from it? • Recent papers: more on cleverness, promise • Other contributions possible: thorough investigation of complex phenomena; comparison that brings sense to an area

  4. How to Read a Research Paper Critically • Take notes as you read • Question assumptions, importance of problem, important effects not mentioned by authors • Write questions to track what you don’t understand • Don’t let ideas or design details pass until you understand them • May need to re-read a paragraph or section many times, or even discuss with peers • You can’t fully decide if design is good unless you understand all details! Be vigilant. • Don’t presume authors’ assumptions or design choices correct simply because paper published!

  5. Assessment: One-Pagers • Papers must be read before lecture to ensure good discussion • To motivate staying on top of reading, we assign a one-pager for each paper: short essay question on paper • Question posted 48 hours before lecture • Due at start of lecture when paper discussed • Answers limited to 200-500 words • 0-1-2 marking scheme • Overall contribution: 5% of class total marks

  6. Assessment: Paper Presentations • Students form groups; each group chooses one paper from class web page: • Presents paper as a group in last week of class • Each individual student turns in own writeup evaluating work’s worth • Papers given on first-come, first-serve basis: form groups, choose papers quickly! • Overall presentation/writeup contribute 10% of class total marks

  7. Today: Geographic Routing(Ad hoc Routing) • Ad hoc Routing: reachability among nodes in a highly dynamic topology • Your task: “Why?” • Why multi-hop? • Is routing the hard or relevant problem? • Why won’t previous routing algorithms work? • See through fads in research!

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