Embed Size (px)
Citation preview
Pa#erns in Interac*ve Tagging Networks
Y. Yamaguchi 1 M. Yoshida 2 C. Faloutsos 3 H. Kitagawa 1
1 U. Tsukuba 2 Toyohashi U. Tech 3 CMU
15/05/27 Yuto Yamaguchi -‐ ICWSM15 1
Resource tagging networks
15/05/27 Yuto Yamaguchi -‐ ICWSM15 2
What happens if users can tag other users?
15/05/27 Yuto Yamaguchi -‐ ICWSM15 3
Twitter lists
Sports
15/05/27 Yuto Yamaguchi -‐ ICWSM15 4
A
Lists as tags
Sports
15/05/27 Yuto Yamaguchi -‐ ICWSM15 5
A
TwiNer users can tag each other
Interactive tagging network
15/05/27 Yuto Yamaguchi -‐ ICWSM15 6
What happens if users can tag other users?
15/05/27 Yuto Yamaguchi -‐ ICWSM15 7
What is the difference between the two types of tagging networks?
(RQ1) Contrast
15/05/27 Yuto Yamaguchi -‐ ICWSM15 8
Data
7M users 1.8M tags 20M edges
30K users 2.8M resources 300K tags 11M edges
52K users 2.6M resources 450K tags 14M edges
Available hNp://dx.doi.org/10.5281/zenodo.16267
We collected From exis5ng study
15/05/27 Yuto Yamaguchi -‐ ICWSM15 9
Broad & narrow folksonomy [Helic+, 2012]
15/05/27 Yuto Yamaguchi -‐ ICWSM15 10
Broad folksonomy Narrow folksonomy
Tags for popular resources
Tags for own resources
Q. Which does TwiNer belong to?
A. Broad folksonomy on T
15/05/27 Yuto Yamaguchi -‐ ICWSM15 11
Log-‐log plot
Categorizers & Describers [Korner+, 2010]
15/05/27 Yuto Yamaguchi -‐ ICWSM15 12
…
Categorizers Describers
…
One tag for many resources
One tag for one resource
Q. Which type are TwiNer users?
Tagging Behaviors
|Tu| : The number of tags user u used
|Ru| : The number of resources user u tagged
e.g.) t
u
s |Tu| = 3 |Ru| = 2
15/05/27 Yuto Yamaguchi -‐ ICWSM15 13
A. Many categorizers on T
15/05/27 Yuto Yamaguchi -‐ ICWSM15 14
30.41 Log-‐log plot
What is the difference between the two types of tagging networks?
(RQ1) Contrast - answer
15/05/27 Yuto Yamaguchi -‐ ICWSM15 15
Broad
Categorizers
Narrow
Describers
Broad
Describers
How do users reciprocate in interac*ve tagging network?
(RQ2) Tagging reciprocity
15/05/27 Yuto Yamaguchi -‐ ICWSM15 16
Mul*plicity
15/05/27 Yuto Yamaguchi -‐ ICWSM15 17
？ ？
Q. Which is more likely to be reciprocated?
A. Large multiplicity is more likely to be reciprocated
15/05/27 Yuto Yamaguchi -‐ ICWSM15 18
Log-‐scale growth
Type of tags
15/05/27 Yuto Yamaguchi -‐ ICWSM15 19
？
Q. What type of tag is more likely to be reciprocated?
Friend
？
Sports
A. Friendship-related tags are more likely to be reciprocated
* Overall RP: 0.046
RP@t: Recipr. prob. for tag t
Lift: (RP@t) / (Overall RP)
*
*
15/05/27 Yuto Yamaguchi -‐ ICWSM15 20
(RQ2) Tagging reciprocity - answer
15/05/27 Yuto Yamaguchi -‐ ICWSM15 21
1. Large multiplicity is more likely to be reciprocated
2. Friendship-related tags are more likely to be reciprocated
How do users reciprocate in interac*ve tagging network?
Conclusion(RQ1) Contrast: ü Broad and narrow folksonomy ü Categorizers and describers
(RQ2) Tagging reciprocity: ü Large mul5plicity à reciprocated ü Friendship-‐related à reciprocated
15/05/27 Yuto Yamaguchi -‐ ICWSM15 22
Please see the paper for other discoveries
