scalable web programming · personalization & published apis: (mar.)* 10. future * assignment...
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Scalable Web Programming
CS193S - Jan Jannink - 3/02/10
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Weekly Syllabus1. Scalability: (Jan.)
2. Agile Practices
3. Ecology/Mashups
4. Browser/Client
5. Data/Server: (Feb.)
6. Security/Privacy
7. Analytics
8. Cloud/Map-Reduce
9. Personalization & Published APIs: (Mar.)*
10. Future
* assignment due
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Administrative Stuff
Grades to be sent out today
Final assignments due on Friday
Demo lunch details firmed
several more guests added
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Must Dos for Friday
Push your code frequently
good comments important
discipline for coding incrementally
Testing demonstrates APIs & functionality
enables quicker fixes
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Topics
Why personalization?
Identity
Self expression
Marking territory
Games and play
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Personalizaton & Scaling
Significant user activity now requires
ability to customize
iGoogle, est. 40,000,000 users
Blogging as an identity building exercise
customization is self expression
marking territory extends identity
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Real World Examples
Graffiti, custom plates
Custom bikes and cars
Clothing, make up, luxury items
Landscaping
School / company swag, affiliation symbols
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Custom FeaturesBackground color, design, image
Font, line styles
Widget placement
Style sheet, template, theme
Embedding, drag and drop editing
Avatar
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Post Anonymous Web
Historically voluntary identity disclosure
professional IDs often leaked
Facebook, LinkedIn, Google Buzz
first global systematic ID establishment
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Very Diverse PeopleLast person who should lecture about this
Unimaginably different mental models
observation of computer/browser operation
academic apprenticeship of the web
Humbling rule of thumb
everyone is irreconcilably different
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Second Life Example
2003 launch (1999 founding), after There.com
Second mover advantage?
Customization and market economy
programmer API + currency = trade
end user ownership of goods
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Game DynamicsGame economy
user interaction is a reason to stay
the more direct the communication the better
(Repetitive) entertaining activity
online activity is real world entertainment
critical to business monetization
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User ProfilesBecoming an online proxy for the user
Enable people to be found
Define automated activity to support user
RSS subscriptions, Twitter feeds
Alerts to new web content, email, etc.
Support self expression
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Targeting
Potential drawback of personalization
AdWords validates targeting
Spyware, malware
VCs have praised spyware targeted ads
Can free web accounts be spyware?
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Wiki Editable ContentSelf expression enabled
many rich text toolkits for in app editing
In place editing vs. separate edit page
pop ups also user friendly
Counter example
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Geotagging
GPS / cell tower coordinate metadata
On line expression of territory
FourSquare simplifies this dramatically
RunThere makes it easy to track exercise
EveryTrail records trips, photos, video
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Augmenting Real Lifeflickr - photo blogging
meetup - connecting online and in the
yelp - rating places, food
foursquare - squatting places
loopt - locating friends
plentyoffish - dating
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Magnetic ContentHoly grail
never search for anything
the info you want is already waiting for you
State of the art
news aggregators, RSS readers, feeds, Buzz
search alerts, email monitoring
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Back to SoftwareProfile clustering
object ownership
Spatial indexes
interleaved coordinates
Information alerts
Feeds
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Global Databasegit highlights shared data management issues
local repo is owner of your content
push synchronizes rest of world
pull synchronizes local repo
Manual prior resolution vs. undo conflict
Google Docs model
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Z-ordered Curve
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Rule Engines
Set trigger conditions to get information
inserts, updates, searches, deletions
Powerful functionality
in general difficult to guarantee performance
simple (non-cascading) triggers sufficient
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FeedsRSS readers easily overwhelm users with info
Social media sites often provide these
Top 10 ...
Recent
Commented
Headlines
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Worth Checking Out
Web 2.0 exercising
http://runthere.com/
Virtual worlds
http://secondlife.com/
http://www.there.com/
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Q & A Topics
Future of personalization
Personas, avatars
Agents
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Scalable Web Programming
CS193S - Jan Jannink - 3/02/10