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Safeguarding Abila through Multiple Data Perspectives
VAST 2014 Grand Challenge Award: Effective Analysis and Presentation
VAST 2014 Mini Challenge 2 Award: Honorable Mention for Effective Presentation
Parang Saraf; Patrick Butler; Naren Ramakrishnan
Discovery Analytics Center, Department of Computer Science, Virginia Tech
1
Presented By: Parang Saraf
System Hosted At:
http://embers.cs.vt.edu:60051
2
VAST Challenge Solution From DAC
•  The DAC solution offers three key advantages:
1.  Provides an efficient front-end interface for user-centered
exploration of data
2.  Very little analysis or cleaning of data is performed in the
backend, thereby helping an analyst to understand the
data better
!  Example: Faulty news sources or GPS coordinates are displayed
3.  Offers an intuitive interface to present data in several
different ways
•  Each Interface was designed from scratch
specifically for the VAST Challenge
3
Mini Challenge - I
4
Mini Challenge - I
•  Two Interfaces:
– News Analyzer
•  Helps an Analyst
explore news articles
and Identify Events
– Email Analyzer
•  Helps an Analyst
visualize and examine
Email network
5
Email Analyzer
19
Email Analyzer
20
Email Analyzer
21
Email Analyzer
22
Email Analyzer
23
Email Analyzer
24
Email Analyzer
25
Email Analyzer
26
Spectral Co-Clustering
•  Given an n x m matrix of n
documents and m words, the
algorithm performs co-clustering of
documents and words.
•  The clustering problem is posed in
terms of finding minimum cut vertex
partitions in a bipartite graph
between document and words
•  We provide an m x m matrix where
rows and columns denote
employees and a cell denotes the
number of emails exchanged
•  Implemented using the scikit-learn
package
Email Analyzer
27
Email Analyzer
28
Email Analyzer
29
Email Analyzer - Example
30
Email Analyzer - Example
31
Email Analyzer - Example
32
Email Analyzer
Packages Used
•  Co-Occurrence Matrix
– Spectral Co-Clustering Algorithm
– Visualization
•  D3
–  Email Radial, Co-Occurrence matrix and Word Cloud
33
Thank You
92

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Email and Network Analyzer