For LA Jam 2015

1. KBDeX:
Introduction and Demonstration using
elementary KB Discourse
Yoshiaki Matsuzawa

2. KBDeX is
• Knowledge Building Discourse eXplorer
• To support Social Network Analysis for KB discourse
• To support qualitative analysis (not a big data /
quantitative analysis approach)
• Strong for contents level, and temporal analysis
• Free for download, Work with both KF4, and 5

3. CHOISE
SNA SUPPORT SOFTWARE
KBDeX
Temporal
Network Analysis
Static
Network Analysis
Content
Network
Human
Network
gephi condor3

4. KBDeX:
Knowledge Building Discourse Explorer
network of
discourse units
Presented in
COINs 2010, COINs 2011
network of
students
network of
words
Input:
・Discourse Data(CSV format)
・Selected Words
Output:
・Three networks
・Temporal graph for metrics

5. Network Creation
Bipartite Graph of notes and words
Note
1 2 4
α ε
Word
3
β γ δ

6. Network Creation
Bipartite Graph of notes and words
A network structure of words based on the co-occurrence
within same notes
1 2 3 4
α β γ δ ε
Word
Note
α
β
γ δ
ε

7. Network Creation
Bipartite Graph of notes and words
A network structure of words based on the co-occurrence
within same notes
Another network structure of notes based on the co-occurrence
of words
1 2 3 4
α β γ δ ε
単語
1 2
3 4
word
Note
α
β
γ δ
ε

8. Network Creation
Bipartite Graph of notes and words
A network structure of words based on the co-occurrence
within same notes
Another network structure of notes based on the co-occurrence
of words
1 2 3 4
α β γ δ ε
単語
1 2
3 4
word
Note
α
β
γ δ
ε

9. Network Creation
A network structure of the students,
1 2 3 4
α β γ δ ε
単語
1 2
3 4
word
Note
α
β
γ δ
ε
Students

10. Network Creation
A network structure of the students, is based on sharing
the words
1 2 3 4
α β γ δ ε
単語
1 2
3 4
word
Note
α
β
γ δ
ε
Students

11. Network Creation
1 2 3 4
α β γ δ ε
単語
1 2
3 4
word
Note
α
β
γ δ
ε
Students

12. Network Creation
1 2
3 4
α
β
γ δ
ε

13. Network Creation
1 2
3 4
α
β
γ δ
ε

14. Network Creation
1 2
3 4
α
β
γ δ
ε
word
Note
Students

15. DEMO
• JICS Grade 4, 22 students, 3 months, 380 notes
• Science class, How light travels
• 123 manually selected words (from Grade1-8
curriculum standards — thanks to Jianwei)
• Decentralized Student network
• Rotating Leadership: 20 / 22 students took a important
position in betweenness centrality. Potential to be an
indicator of collective cognitive responsibility.

16. Try