Group 7A

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Group 7A

• Nickie Nicole Wooten
• Mohammad Mehkari
• Kashif Riaz

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Introduction

• What is Link Analysis?
• What are some tools that assist in Link Analysis
• NETMAP
• Analysts Notebook
• Imagix 4D
• Daisy

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NETMAP

• What is NETMAP?
• What can one do with it?
• Accessing Data
• Support Functions
• Easy Menu Manipulation

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Figure 7.1
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Figure 7.2
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Figure 7.3
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Figure 7.4
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Figure 7.5
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Figure 7.6
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Presenter

• Mohammad Mehkari

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Analyzing Emergent Groups

• These are techniques that can be used to group
  data according to their links with other nodes.
• The basic NETMAP display format can be modified
  slightly to accommodate the results of some of
  these advanced analyses.
• NETMAP supports the emergent group algorithm.

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What is the Emergent Group Algorithm??

• A highly interconnected group of entities that
  share more linkages with members of their own
  group than they do with any others.
• The algorithm has special roles defined for
  categorizing the nodes as group members, attached
  isolates, and detached isolates.

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Example of Display in Emergent Group Analysis
(Fig 7.7.)
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Analyzing Discrete Groups

• A discrete group represents all of the nodes that
  can be connected to form a self-contained
  independent cluster.
• Once all the pathways have been exhausted for a
  particular data set, it forms a discrete group.

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Example of Display in Discrete Group Analysis
(Fig 7.8.)
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The NETMAP Presentation Tool (NPT)

• The NETMAP presentation tool (NPT) is a
  stand-alone module that supports annotation of
  displays and report generation within NETMAP.
• NPT emulates a larger number of popular drawing
  functions that can be used to adjust contents of
  a NETMAP diagram.

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Using NPT for Data Modeling

• NPT can also be used to create new nodes and
  links without editing the NETMAP configuration
  file.
• Nodes can be linked together quickly by
  connecting the endpoints of a link to the
  designated nodes.
• NPT presents data elements as generic drawing
  objects.

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Figure 7.9 Multiple NETMAP diagrams presented
with NPT
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Analysts Notebook

• It is one of the most widely distributed
  visualization system within the investigative,
  intelligence, and law enforcement communities.
• The entire system is targeted at non-technical
  users.
• Many courtroom presentations are based on the
  charts produced using the Analysts Notebook.

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Using Link Notebook

• The Link Notebook supports functions used for
  link analysis.
• Nodes and links can be added manually or
  generated from structured data sources.
• Individual nodes on the screen are called
  entities within the Link Notebook.

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Figure 7.10 A sample Display using the Link
Notebook
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A Link Notebook Diagram with Annotation
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Defining Link Levels in Link Notebook

• Link Notebook allows to the set the number of
  levels of linkages to show from or to
  relationships.
• The result from this feature automatically select
  the other entities (e.g., nodes and links)
  matching the defined criteria.

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Figure 7.12 Selecting the endpoint for a pathway
(see highlights)
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Figure 7.13 Showing pathways within the Link
Notebook (see highlights)
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Presenter

• Kashif Riaz

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CASE NOTEBOOK

• Useful with temporally coded information.
• e.g., time based.
• Forms of Temporal patterns.
• Proportional time periods.
• real-world time
• (ii) Nonproportional time periods
• relative order of events

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GENERATING CASE CHARTS

• Components.
• Themes
• people, organizations, locations, etc.
• Events
• phone calls, sightings, meetings, contacts, etc.
• (iii) Links
• used as an association

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CASE CHARTS (cont.)
Horizontal Axis shows time Vertical
Axis represents the themes Commonality event is
shared by more than one theme
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Figure 7-15 (Example of a case chart)
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Figure 7-16 (Case chart summary display format)
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Figure 7-18 (Temporal clustering of events)
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IMAGIX 4D
A link analysis tool. Shows the composition of a
piece of software in terms of subcomponents and
their interconnections. Analysis makes the
dependencies and structures within a program
explicit. Produced by a small company located in
California called Imagix. Runs with both Windows
and Unix.
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IMAGIX 4D (cont.)
Derives its data directly from parsing raw
programming code usually stored as ASCII
files. Then converts the content of these files
into its own internal format. Specially tailored
to work exclusively in the analysis of software
programs. Data structures closely approximate a
hierarchical link display paradigms. Non program
data sources can also be imported into Imagix 4D
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Nickies Question How has NETMAP evolved from
its beginning version to its present day
program?
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Mohammads Question

• What is an Emergent Group Algorithm?

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Kashifs Question
Q) What is the difference between proportional
and non-proportional time periods?
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Questions ?????