2009 - NodeXL - Overview

8/8/2019 2009 - NodeXL - Overview

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NodeXLNetwork overview, discovery and explorationfor

Microsoft Excel 2007http://www.codeplex.com/nodexl

Dan Fay (MSR Redmond)

Cody Dunne (U Maryland)

Marc Smith (Telligent)Vladimir Barash (MSR Silicon Valley/Cornell)

Tony Capone (MSR Redmond)

Natasa Milic-Frayling (MSR Cambridge)

Eduarda Mendes Rodrigues (MSR Cambridge)

Eric Gleave (U Washington)

Adam Perer (U Maryland)

Ben Shneiderman (U Maryland)


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Problem: No

network chart inExcel


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NodeXL: Network analysis and visualization tool

Cyclic Graph data structures have limitedsupport in existing Office tools

Network analysis is of growing importance inacademic, commercial, and Internet socialmedia contexts

Existing network analysis tools have command

line interfaces or demand steep learningcurves

Many network data sets already live in Excel!


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NodeXL: Goal: Make SNA easier

Existing Social Network Tools are challenging

for many novice users

Tools like Excel are widely used Leveraging a spreadsheet as a host for SNA

lowers barriers to network data analysis and

display


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Social Network Analysis ToolkitTools to support the study of the social network structure

social media and other network structures

Sociologist

What are the

structures of

communication inscientific

discussions?

User ExperienceInformation Visualization

What are the best UI/UX

workflows for network

analysis tools?

Computer ScientistAlgorithmicist for Social

Network Measures

What are the measures

and algorithms needed forunderstanding networks?


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6


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NodeXL:

Network Overview, Discovery and Exploration

for Excel Leverage spreadsheet for storage of edge and

vertex data


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NodeXL: Import data from multiple sources:

Multiple network

spigots provide

edge lists from

several common

sources and data

formats.


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NodeXL: Import edges from other spreadsheets

Map data columns from existing spreadsheets


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NodeXL: Merge Duplicate Edges (if any)

Aggregate duplicate edges and add a

Tie Strength Column to store the count ofduplicates (edges could be from multiple

time slices).


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NodeXL: Calculate Network Analytics and Metrics

Starter library of

basic network

measures

Users may unselect

resource intensive

measures


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NodeXL: Insert network sub-graph images

Create ego-

centric

networks for

each node in

the network

Select number

of degrees outto include


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NodeXL:

Display

nodes

sorted bynetwork

attributes

using ExcelData|Sort


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NodeXL:

Get reports of

global networkmetrics

Metric Value

Graph Type Directed

Unique Edges 7,852

Edges With Duplicates 0

Total Edges 7,852

Self-Loops 10

Vertices 174

Graph Density 0.260514259


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NodeXL: Display whole graph

Toggle display of whole graph display pane

with Show/Hide Graph Pane


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NodeXL: Create a new whole graph display

Select Read Workbook to load the graph into

the Display Pane.

The title Document Actions is imposed by Excel


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NodeXL: Viewing the whole graph


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NodeXL: Using Dynamic Filters to simplify the graph

Each data column(including dates)

associated with anedge or vertex isexposed with a sliderfilter.

Filtered nodes andedges turn gray orbecome invisible


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NodeXL: Apply dynamic filters to the data


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NodeXL: Map data to display attributes

Map Edge

and Vertex

attributes

to size,width,

color,

opacity,

and shape


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NodeXL: Decorated Network Graphs


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NodeXL: filtered, decorated, labeled networks


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NodeXL: Clustered networks


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NodeXL: Filtered clusters


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NodeXL: Add URLS to Right-click menu of Nodes


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NodeXL: Import social networks from email


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NodeXL: Import social networks from email


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NodeXL Next Steps

Enhanced layout controls

Smart selection of nodes

Clustering and composite nodes

Add/remove a node to/from a cluster

Add/remove a node to/from a composite

Zoom and scale networks (in WPF)

Add social network data sources: Twitter, YouTube, Facebook, Outlook, Messenger,

etc.


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NodeXL Partnerships and community

University of Maryland

Northwestern University

Ohio University Stanford University

University of Pennsylvania

4,000 + downloads on Codeplex


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NodeXLNetwork overview, discovery and explorationfor

Microsoft Excel 2007http://www.codeplex.com/nodexl

Dan Fay (MSR Redmond)

Cody Dunne (U Maryland)

Marc Smith (Telligent)Vladimir Barash (MSR Silicon Valley/Cornell)

Tony Capone (MSR Redmond)

Natasa Milic-Frayling (MSR Cambridge)

Eduarda Mendes Rodrigues (MSR Cambridge)

Eric Gleave (U Washington)

Adam Perer (U Maryland)

Ben Shneiderman (U Maryland)


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NodeXL: Project Network

2009 - NodeXL - Overview

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