Measures of Central Tendency: Mean, Median and Mode
Social Web for VU Dagje Studeren
1. The Social Web
Dagje Studeren IMM 25-2-2014
Victor de Boer
(met slides van Lora Aroyo en Marieke van Erp)
2.
3. Our goal is to …
understand the practices, implications, culture, &
meaning of the sites, as well as users' engagement
with them
include this understanding as part of software
engineering for the new social world
agapegeek.com
4. In Social Web course to goal is to understand & try out
how the Social Web works
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What IS the Social Web?
What do people DO on the Social Web?
How is DATA on the Social Web ACCESSED?
How is DATA on the Social Web STUDIED?
What are typical Social Web APPLICATIONS?
What are CHALLENGES on the Social Web?
6. Social Web = Social + Web
Images: http://www.flickr.com/photos/johnkay/3182986643/sizes/m/in/photostream/
om/4132/4831892926_99a2cc1db6_t.jpg, http://www.flickr.com/photos/dizfunk/3066153143/sizes/m/in/photostream/
8. Social Web History
Social Web: A History
http://infographicsmania.com/social-media-a-history/
CedrineMarrouat.com
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10. Social Web = Social Networking + Social Media sites
Classmates.com (1995)
SixDegrees.com (1997)
Friendster (2002)
MySpace, Bebo, Facebook (2004)
Social networking sites are Web sites that
Social networking sites are Web sites that
allow people to stay connected with other
allow people to stay connected with other
people in online communities
people in online communities
(open vs. closed)
Flickr (2004)
Youtube (2005)
Social media sites are Web sites that
allow people to share UCCs.
(open vs. closed)
General-purpose, e.g. Facebook,
Media types, e.g. Flickr (photos), Last.FM
LinkedIn
(Music), YouTube (video)
Vertical, e.g. Dogster, Couchsurfing
Won Kim, Ok-Ran Jeong, Sang-Won Lee (2010). On social Web sites. Information Systems 35, 215–236
12. User Created Content
aka User Generated Content
material on websites that is produced by the
users of the website.
little or no cost for uploading user-generated
content
Exabytes of content
Re-mix culture
Collaborative creation
17. 2005: Facebook
including other universities, high school students,
professionals inside corporate networks, and,
eventually - everyone
ability for outside developers to build
"Applications"
24. Diversity in Cultures
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MySpace: US & abroad
Friendster: Pacific Islands
Orkut: Brazil, India
Mixi: Japan
LunarStorm: Sweden
Hyves: NL
Grono: Poland
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Hi5: South America, Europe
Bebo: UK, New Zealand, Australia
QQ: China
Cyworld: Korea
Skyrock: France
Windows Live Spaces: Mexico,
Italy, and Spain
26. A Single Person
Source: http://infosthetics.com/archives/2011/12/all_the_information_facebook_knows_about_you.ht
See also: http://www.youtube.com/watch?feature=player_embedded&v=kJvAUqs3Ofg
28. “Bob Arnold”
“Dogs urinating
on everything”
“Landscapers in Liliburn,
GA”
“Homes sold in shadow
lake subdivision gwinnet
county”
29. Privacy concerns
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Legal still in its infancy, but courts do rule on new behavior
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e.g., do police officers have the right to access content
posted to Facebook without a warrant?
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Truthfulness of personal profiles has become a subject of
debate
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Privacy hard to understand (few read Terms) and
misinterpret ‘Friends’
fourth amendment to the U.S. Constitution & legal
decisions concerning privacy are not equipped to address
social network sites
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32. Security
security from people (sex offenders)
security of computers and data
With enormous numbers of users and
enormous amounts of data, sites are natural
targets of spammers, and phishing and
malware attacks (‘new friend malware’,
‘twitter spam’ etc.)
35. Sentiment / Brand analysis
Great
Meh
Good
Yuck
Love
Stale
Like
Hate
Fun
Blegh
Nice
Sucks
Tasty
Too late
http://flowingdata.com/2011/07/25/brand-sentiment-showdown/
38. Attention on the Social Web
Log-normal distribution
Exponential decay
(story half-life = 69 min)
http://www.slideshare.net/supernovahub/huberman-supernova-2008
42. Reflections
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Twitter profile vs. Facebook profile?
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Pros & cons of (a)symmetry of friendship?
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How often do you experience problems of duplication of content
shared across different sites?
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FB vs Google+ actions for retaining users?
Find friends on different networks?
How does LinkedIn facilitate the forming & joining of groups? FB?
Google+? Others?
Twitter vs. Facebook vs. Flickr vs.Vine differences in terms facilitating
communication?
43. Where do YOU come in
• understand the practices, implications,
culture & meaning of the sites, as well as
users' engagement with them
• learn how to use this knowledge in
designing successful social web applications
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45. Hands-on Teaser
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Visualise your Facebook Network
Tag Cloud of your wall posts
Analyse what’s trending on Twitter
and how people talk about certain
topics
image source: http://www.flickr.com/photos/bionicteaching/1375254387/
Hinweis der Redaktion
http://www.youtube.com/watch?v=JdyBM-p05Ss
Naturally we won’t treat everything here, but just to give you a taste of what aspects are all in there. Perhaps also link to other courses in introduction.
exabyte (EB)1018
1 Miljard gigabytes
A more in-depth use case
I joined facebook 19 december 2006
requires not only engineering good software but also understanding how it impacts people and their social relationships
As his animated map shows, over the last few years Facebook has cut down the number of top social networks around the world from 17 to just six. More specifically, there were 17 in June 2009, 16 in December 2009, 14 in June 2010, 11 in December 2010, nine in June 2011, and six in December 2011. Here are the remaining six: Facebook, QZone, V Kontakte, Odnoklassniki,Drauglem, and Zing.
Between June 2011 and December 2011, Facebook managed to conquer Netherlands, and with it the whole Europe, Brazil, after a long struggle to overtake Google's Orkut, as well as Japan (although a large part of Japanese networking activities are on mobile, including Gree, Mobage, and Mixi).
If you remember that Facebook is still banned in many countries, such as China (the world's largest Internet population with 500 million people), the service's dominance is certainly impressive. If this trend continues, it won't be long before the social network is king in all the countries it can be accessed in.
"privacy paradox" lack of awareness of the public nature of Internet (safety of younger users)reconstruct users' social security numbers with profile info, e.g. hometown and date of birthfrom freely accessible profile data - craft a "phishing" scheme appearing from a friendusers' ability to control impressions and manage social contexts, e.g. "News Feed" could disrupt users’ sense of controlno flexibility to handle conflicts with friends with different conceptions of privacy
Pew found that 55% of online teens have profiles, 66% of whom report that their profile is not visible to all Internet users (Lenhart & Madden, 2007). Of the teens with completely open profiles, 46% reported including at least some false information.