Topic
V 2/17/2009 Lecture Notes
V Kick-off:
V Architecture
V Learning Objective:
* Understand the evolution of queries
V Go over schedule
* Assignment 5 and 6 delayed so we can iron out the details of the assignment
V Cards
* We'll help with assignment 06 config file
* Hadoop is not tuned for Windows
V Going to google?
* So far I think so. Optional if you have a conflict.
V Does google use hueristics?
* Yes, mixed with more principled analysis
* How do you keep rank data in a postings list?
* What is the sort criteria for docIDs in the posting list?
* Who uses mapReduce right now?
V Hard to search for
* unpopular products - reviews
* song without known title or lyrics
* myself
* a definition of a foreign word you can't spell
* anything that requires many words to describe
* other people named "Elvis Presley"
* places to buy panda meat
* people who aren't famous - bands that aren't famous
* live athletic injury updates
* non-textual queries - smells
* laundromats and 24-hour restaurants
* very specific /iconic images
* free sheet music
* Chuck Norris - he searches for you.
*
V Cards
* Name
* Something that is hard to search for
V Video break