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TwiNews: Detect local user
interests in Twitter to re-
rank news
Xin Shuai
Tuesday, October 8, 2013
Tuesday, October 8, 2013
Tuesday, October 8, 2013
Top ranked
news
may not satisfy
all users
from different
geographical
locations!
Tuesday, October 8, 2013
Not
relevant to
China!
Tuesday, October 8, 2013
Word Closeness Local User Interests
Tuesday, October 8, 2013
How to detect the local user
interests given a news query?
Tuesday, October 8, 2013
How to detect the local user
interests given a news query?
Tuesday, October 8, 2013
Tuesday, October 8, 2013
Tuesday, October 8, 2013
Can we provide localized news
ranking for users by leveraging
geographical tweets?
Tuesday, October 8, 2013
Tuesday, October 8, 2013
LDA
topic model
topic 1
technology:
mobile
iphone
facebook
topic 2
economy:
market
stock
investor
Tuesday, October 8, 2013
LDA
topic model
topic 1
technology:
mobile
iphone
facebook
topic 2
economy:
market
stock
investor
tweet 1
tweet 2
tweet n
topic 1 topic 2
Tuesday, October 8, 2013
LDA
topic model
topic 1
technology:
mobile
iphone
facebook
topic 2
economy:
market
stock
investor
tweet 1
tweet 2
tweet n
topic 1 topic 2
local topical
distribution
+
+
+
technology (topic 1)
Tuesday, October 8, 2013
LDA
topic model
topic 1
technology:
mobile
iphone
facebook
topic 2
economy:
market
stock
investor
tweet 1
tweet 2
tweet n
topic 1 topic 2
local topical
distribution
+
+
+
technology (topic 1)
Tuesday, October 8, 2013
LDA
topic model
topic 1
technology:
mobile
iphone
facebook
topic 2
economy:
market
stock
investor
tweet 1
tweet 2
tweet n
topic 1 topic 2
news 1
news 2
news 3
technology (topic 1)
local topical
distribution
+
+
+
technology (topic 1)
Tuesday, October 8, 2013
LDA
topic model
topic 1
technology:
mobile
iphone
facebook
topic 2
economy:
market
stock
investor
tweet 1
tweet 2
tweet n
topic 1 topic 2
news 1
news 2
news 3
technology (topic 1)
local topical
distribution
+
+
+
technology (topic 1)
cosine
similarity
cosine
similarity
cosine
similarity
Tuesday, October 8, 2013
A/B Testing
TwiNews
30 queries, 2 weeks
100 turkers from CA & NY
+3%
+7%
t-test: p < 0.05
A
B
Tuesday, October 8, 2013
GibbsLDA++
Tuesday, October 8, 2013
localized news ranking
localized user interests
from Twitter
Tuesday, October 8, 2013
localized news ranking localized targeted advertising
localized user interests
from Twitter
Tuesday, October 8, 2013
localized news ranking localized targeted advertising
localized deal recommendation
localized user interests
from Twitter
Tuesday, October 8, 2013
localized news ranking localized targeted advertising
localized deal recommendation
localized user interests
from Twitter
localized music/movie recommendation
Tuesday, October 8, 2013
Xin Shuai
Tuesday, October 8, 2013
LDA topic modeling
LDA (Latent Dirichlet Allocation)
Tuesday, October 8, 2013
LDA topic modeling
LDA (Latent Dirichlet Allocation)
topic 1:
mobile
iphone
facebook
ipad
topic 2:
market
stock
index
investor
topic 3:
....
....
....
Tuesday, October 8, 2013
Amazon Mechanical Turk
Price: eleven cents/HITS
Total Cost: over 200 dollars
Tuesday, October 8, 2013
Tuesday, October 8, 2013
Tuesday, October 8, 2013
Tuesday, October 8, 2013
Tuesday, October 8, 2013

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Insight demo