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CS 680 Internet Systems Research

Sami Rollins srollins@cs.usfca.edu Spring 2007. CS 680 Internet Systems Research. Administrative Information. Class web page Introductions What do you hope to get out of this class?. What is the Internet?. History of the Internet.

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CS 680 Internet Systems Research

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  1. Sami Rollins srollins@cs.usfca.edu Spring 2007 CS 680Internet Systems Research

  2. Administrative Information • Class web page • Introductions • What do you hope to get out of this class?

  3. What is the Internet?

  4. History of the Internet • 1960s – circuit switched phone network – not useful for timesharing computers • 1961 – Kleinrock publishes paper on packet switching • 1967 – Roberts publishes plan for ARPAnet • 1969 – first node (UCLA) on ARPAnet followed by SRI, UCSB, and Utah • 1972 – Kahn demonstrates ARPAnet which uses the network-control protocol (NCP) to communicate • 1972 – Tomlinson writes first e-mail program

  5. History of the Internet • early to mid-70s – other networks introduced • 1973 – Metcalfe begins work on Ethernet • 1974 – Kahn and Cerf explore how to connect several networks – begin development of TCP/IP

  6. History of the Internet • early 80s – many efforts, including NSFNET, to build networks to link universities • 1983 - “flag day” for transition from NCP to TCP/IP • late 80s – DNS maps IP address to name

  7. History of the Internet • 90s – ARPAnet ceases to exist, NSFNET decommissioned and Internet backbone traffic carried by commercial ISPs • 1989 – Berners-Lee invents WWW based on ideas by Bush (1945) and Nelson (60s)

  8. Research • What is research? • How is research different from what you do in your other classes? • New ideas • Proof that they work

  9. Research in CS • Traditionally, three areas in CS • Theory • Systems • Applications/AI

  10. Systems Research • Motivation • What's the problem and why is it interesting? • Design • What is your solution and how is it new and interesting? • Implementation • How do you make your solution actually solve a problem? Provides proof-of-concept, though there are likely to be other implementations. • Evaluation • Is your solution really better than other solutions? How do you measure its performance (metrics)? What affects its behavior (parameters)?

  11. Example: A New Algorithm/Architecture • Examples: routing for P2P search, ranking of web search results, back-end cluster architecture • Motivation – old algorithms are too slow, use too many resources, don't work for a particular scenario • Design – how does your algorithm/architecture work, how do components interact in your system • Implementation – how do you prove your algorithm/architecture is feasible? • Evaluation – compare to other existing algorithms or to a naive approach, may evaluate via simulation

  12. Example: A Measurement Study • Examples: gather data about traffic on P2P networks • Motivation – understand how people use applications/systems/networks to facilitate better design • Design – anything interesting about how data is gathered? • Implementation – how is your data gathering tool implemented? • Evaluation (Results) – lots of graphs classifying data

  13. Example: Totally New System • Examples: Turducken • Motivation – can be hard to define, often “cool to have” • Design/Implementation – were you about to actually build it? • Evaluation – can be really hard! nothing to compare to

  14. Related Work • Very important! • Anything you think of has been thought of before • Don't do work that's already been done • Find out what other people are doing!

  15. Related Work • Conferences are main publication venue for CS • Sigcom, Infocom, Mobicom, OSDI, NSDI, SOSP, Usenix, MobiSys, WWW, Ubicomp, Pervasive, SigIR, ACM Multimedia, Mobihoc, Sigmetrics, ICDCS • Journals – Transactions on X

  16. Reading Papers • Once is never enough • Identify contribution • How is this work new? • How could you improve upon this work?

  17. Summary Format (Benson) • What are the most important points made in the paper (at least 3)? • What are the main weaknesses of the paper? Do you believe the assumptions and results? If not, why not? • If possible, compare this work with other work that you have heard about. If you chased down additional information on this topic, what was it? • List three questions or points that you plan to bring up in the discussion. • Place a number for each item below corresponding to your evaluation. • Quality of presentation, Technical contribution, Novelty of ideas, Overall

  18. Latex • Lots of on-line tutorials • Miktex for windows • To compile into pdf document: pdflatex eval.tex

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