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Getting Started with NetMiner
2
Getting Started with NetMiner
3
Copyright and Trademarks
Getting Started with NetMiner
Version 4.0.0
May 2011
Copyright 2000-2011 by Cyram Inc.
Companies, names and data used in examples herein are fictitious unless otherwise noted.
All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system, or
transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or
otherwise, without the prior written permission of Cyram Inc.
The information in this publication is provided for information only and is subject to change without
notice. Cyram Inc. assume no responsibility or liability for any loss or damage that may arise from the
use of any information in this publication. The software described in this book is furnished under
license and may only be used or copied in accordance with the terms of that license.
NetMiner is a registered trademark of Cyram Inc. CYRAM and CYRAM logo are registered
trademarks of Cyram Inc.
Cyram Inc.
516, Seoul National University Research Park Innovation Center, San4-2, Bongchun7-Dong, Gwanak-
Gu, Seoul, Korea, 151-818
Tel: +82-2-886-6077
Fax: +82-2-886-6104
Electronic access: http://www.netminer.com/
Getting Started with NetMiner
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How to reference NetMiner 4
In order to reference NetMiner 4, please employ the following bold-faced reference, which is also
found at NetMiner Menu: “Help >> About NetMiner 4”.
Cyram (2009). NetMiner 4.0.0. Seoul: Cyram Inc.
Technical Support
The NetMiner Help file will guide you to use NetMiner 4. Simply press F1 function key or use
NetMiner menu bar for triggering Help feature.
Cyram is committed to provide a reliable, high-quality, yet easy-to-use product. If you have any
problem of installing or using NetMiner, please contact us by mail, phone and fax or preferably by
email and World Wide Web.
Cyram Inc.
516, Seoul National University Research Park Innovation Center
Bongchun7-Dong, Gwanak-Gu, Seoul, Korea, 151-818
Tel: +82-2-886-6077, Fax: +82-2-886-6104
Email: [email protected], Web: http://www.netminer.com/
When reporting a problem on NetMiner, please include the following information:
- your name and e-mail address
- version number of NetMiner program
- your hardware and software configuration. (ex. O/S, JRE version, RAM, CPU, etc.)
- a description of steps to reproduce the problem
Getting Started with NetMiner
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Contents
I. Introduction 1
What is NetMiner 2
System Requirements 3
About This Document 4
Installation, Uninstallation and Software Update 4
II. Getting Started 26
Overview 27
1. Sample Data Used in This Guide 27
2. Launching NetMiner 30
3. Importing Data 31
4. Editing Data 37
5. Drawing Network Map 41
6. Styling Nodes by Node Attribute 42
7. Saving Network Map 44
8. Performing Data Analysis 44
9. Using Output Results 45
10. Saving Project and Exit 47
Getting Started with NetMiner
1
I. Introduction
1. What is NetMiner
2. System Requirements
3. Installation
4. About this Document
Getting Started with NetMiner
2
What is NetMiner
Cyram NetMiner is an innovative software tool for Exploratory Network Data Analysis
and Visualization. It is noteworthy to underline its unique feature of the integration of
standard social network analysis (SNA) methodology with modern network visualization
(or graph drawing) techniques in the spirit of exploratory data analysis (EDA).
Cyram NetMiner allows you to explore your network data visually and interactively, and it
facilitates the detection of underlying patterns and structures of the network.
Cyram NetMiner can analyze large-size networks composed of a maximum of million
nodes. It includes not only 110 network analysis/visualization modules but general
statistical analysis/chart modules as well.
Cyram NetMiner is a GUI-and-script-based software package that provides both GUI
mode and script mode, providing the best of both worlds – being easy to use on the GUI
side and expandability on the script side. NetMiner Script is GUI-based, which means that
execution in the script mode is exactly the same as the execution in the GUI mode, not
only in terms of the results but in terms of the process as well. By using scripts the user
can handle processes more finely.
Cyram NetMiner can be employed for general research, teaching and professional analysis
in social networks. In addition, it can be effectively applied to various business fields,
where network-structural factors may critically influence performance: e.g. intra- and
inter-organizational, financial, web, criminal/intelligence, info- metric, telecommunication,
distribution, transportation networks.
Getting Started with NetMiner
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Main features of NetMiner include:
- Expressive Network Data Model
- Large Network Data Analysis
- Exploratory Network Analysis
- What-if Network Analysis
- Comprehensive Network Measures and Models
- Workflow Management for productivity
- Powerful Data Management
- Interactive Visual Analytics
- User-friendliness
- Built-in functions/modules for Statistical Analyses and Charts
System Requirements
- Operation System
- 32bit version (Tiny, Small, Medium, Large) : Windows 2000, Windows XP
- 64bit version (Huge): Windows Server 2000 x64, Windows Server 2003 x64, Windows
Server 2008 x64, Windows XP x64, Windows Vista x64, Windows 7 x64
- Memory :
- 32bit version (Tiny, Small, Medium, Large): 512 MB RAM Minimum
- 64bit version (Huge): depends on the data size and algorithm complexity
- Hard Disk
- 32bit version : 300 MB of available hard-disk space is required
- 64bit version (Huge): depends on the data size and algorithm complexity
- Display : Super VGA (1024x768) or higher-resolution monitor
- USB port : for plugging-in USB flashdrive-looking hardware license key.
- Optionally a Windows-supported printer may be needed for printing outputs.
Getting Started with NetMiner
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About This Document
This manual is designed to guide a beginner to explore NetMiner and introduces a couple
of features which well-illustrate main concepts of NetMiner in step-by-step manner.
Full descriptions of NetMiner are covered in other manual books: “Using NetMiner” and
“NetMiner Module Reference”.
This document does not cover tutorial for the methodology of network analysis. Rather, it
is meant to be a guide for the software NetMiner.
This manual is associated with specifically NetMiner version 4.0. Please visit NetMiner
Web Site periodically for an update,
http://www.netminer.com
Installation, Uninstallation and Software Update
Overview
• NetMiner 4 installation Process is different for the following three cases, which is
classified by methods and term of licensing.
Case 1: Network License –. Network License is delivered to user only by Door-to-
door Express Service. Deliverables include 1) CD Media Containing NetMiner 4
Software 2) CD Media Containing Cyram Network Server License and Hardware Key
Driver 3) Hardware Key for Launching NetMiner. You should install the Hardware
Key Driver on the server computer that will run ‘Cyram Network License Server’.
Getting Started with NetMiner
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USB Slot is required for this Hardware Key and Hardware Key Driver installation is
prerequisite for Network License Server installation.
Case 2: Stand-Alone License (Perpetual) – Hardware Key Driver installation is
required before NetMiner 4 software Installation. Perpetual License is delivered to
users only by Door-to-door Express Service. Deliverables include 1) CD Media
Containing NetMiner 4 software and Hardware Key Driver and 2) Hardware Key for
Running NetMiner. USB Slot is required for this Hardware key and Hardware Key
Driver installation is prerequisite for NetMiner software installation.
Notices: Door-to-door express service for CD package can be selected for Other
License. But Deliverables of other license include only CD Media containing
NetMiner 4 software. Hardware Key is required only for Perpetual License.
Case 3: Stand-Alone License (Quarter or Annual)
– Hardware Key Driver installation
is not required. Just install NetMiner 4 software.
Case 1: Network License
• Term of Network License is only perpetual. “Institute License” and “Enterprise
License” are Network License. If your License is “Institute License” or “Enterprise
License”, install as follows.
• In this case, Hardware Key Driver that will run ‘Cyram Network License Server’
should be installed on the server computer.
• Step 1: Execute the set-up program (Setup.exe).
Getting Started with NetMiner
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• Step 2: Review License Agreement before installing. If you agree with it click I Agree.
• Step 3: Select folder to install NetMiner 4. Default folder is “C:\Program
Files\Cyram\NetMiner 4\”.
• Step 4: You can see the installation progress. You can see the progress details by click
Getting Started with NetMiner
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Show button.
• Step 5: Confirm the finished installation. If you check “Run NetMiner 4”, NetMiner 4
runs on clicking “Finish”.
Registration
• Step 1 : Launchig NetMiner and Registration – When NetMiner is run for the first time,
you can see the registration window as follows. Enter the License Key in the blank
field. You can check your license key in your registration email.
Getting Started with NetMiner
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• Step2: Enter the IP address of server computer, User ID and Password. Users are
able to check the information from the Administrator of the server system.
• NetMiner at a Glance: Now you can enjoy the features of NetMiner 4!
Getting Started with NetMiner
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Case 2: Stand-Alone License (Perpetual)
• NetMiner 4 Installation Process for Perpetual License is separated into two Stages:
Stage 1: Hardware Key Driver Installation
Stage 2: NetMiner 4 Software Installation
Installation process goes stage by stage automatically by executing Setup file in your
CD media.
• Hardware Key Driver Installation is required for Using Hardware Key in USB Slot in
your local system for Running NetMiner 4.
• Hardware Key for NetMiner 4 is supplied by Third Party Manufacture. You can check
product details at:
http://www.safenet-inc.com/library/3/SentinelSuperPro.pdf
• Step 1: Execute “Setup.exe” in “Setup” folder. Stage 1 and Stage 2 will proceed in
sequence. But if you insist, you can install Hardware Key Driver and NetMiner 4
Software in each separated process manually. We recommend you just to click “Setup.
Exe” in “Setup” folder for convenience.
You can see Setup Wizard as follows.
Getting Started with NetMiner
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• Step 2: Review License Agreement
• Step 3: Choose installation location. Default folder is
”C:\Program Files\Cyram\NetMiner 4\”
• Step 4: Hardware key installation option. If you click “Yes” Hardware key driver will
be installed automatically before NetMiner 4 Installation. If you click “No”, you must
install Hardware key driver manually. We recommend you to select “Yes”.
Getting Started with NetMiner
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• Step 5: You can see the Hardware Key Driver installation Wizard as follows.
• Step 6: License Agreement.
Getting Started with NetMiner
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• Step 7: Setup Type Selection. You can select “custom” if you know well about this
product.
• Step 8: Ready to Install. Click “Install”.
• Step 9: You can see installation progress.
Getting Started with NetMiner
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• Step 10: Hardware Key Driver Setup is finished. You can now use Hardware Key for
Running NetMiner 4 after finishing installation of NetMiner 4. Hardware Key must be
in USB Slot of your local system where NetMiner 4 is Running.
• Step 12: Now the installation wizard goes to Stage 2 for NetMiner 4 setup. You can see
the installation progress. You can see the progress details by click Show details button.
Getting Started with NetMiner
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• Step 13: Confirm the finished installation. If you check “Run NetMiner 4”, NetMiner 4
runs on clicking “Finish”. We recommend you to insert Hardware Key in your USB
Slot before continuing installation process. Because after finishing the NetMiner 4
installation process, NetMiner 4 will be launched automatically. The program will
check if the hardware key is in your local system before the launching. Note that the
Hardware Key must be in USB slot of your local system.
If you did not insert Hardware Key in the USB slot, you may see the message as
follows.
• Launching NetMiner and Registration: When NetMiner is first launched, you can
see the registration window as follows.
Enter the License Key in the blank field. You can check your license key in your
registration email.
Getting Started with NetMiner
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NetMiner at a Glance: Now you can enjoy the features of NetMiner 4!
Getting Started with NetMiner
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Case 3: Stand-Alone License(Quarter and Annual)
• Step 1: Execute the set-up program (Setup.exe).
• Step 2: Review License Agreement before installing. If you agree with it click I Agree.
• Step 3: Select folder to install NetMiner 4. Default folder is “C:\Program
Files\Cyram\NetMiner 4\”.
Getting Started with NetMiner
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• Step 4: You can see the installation progress. You can see the progress details by click
Show button.
• Step 5: Confirm the finished installation. If you check “Run NetMiner 4”, NetMiner 4
runs on clicking “Finish”.
Getting Started with NetMiner
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• Launching NetMiner and Registration: When NetMiner is first launched, you can
see the registration window as follows.
Enter the License Key in the blank field. You can check your license key in your
registration email.
• NetMiner at a Glance: Now you can enjoy the features of NetMiner 4!
Getting Started with NetMiner
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Offline Registration
Step 1. Internet Connection is required for your system in which installed NetMiner 4
when you register it. If the system is not connected to the Internet, the following message
will be alerted.
Step 2. You can register NetMiner 4 in off-line mode. Click “Offline Register” button.
Step 3. After offline Register dialog is opened, follow the instruction on the dialog.
1. Please send the Off-line Registration below to NetMiner Team by e-
mail([email protected]).
2. NetMiner Team will send the Validation code to you.
3. Enter the Validation code to the white text box and press ‘Validate’ button.
Getting Started with NetMiner
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Step 4. If registration is complete successfully, you can see the following message.
Uninstallation • You can uninstall NetMiner 4 by execute “Uninstall.exe” file in NetMiner 4
Installation Folder. If it is installed in default folder it will be “C:\Program
Files\Cyram\NetMiner 4\”.
• Uninstallation Process goes step by step as follows.
• Step 1: Confirm Uninstallation
• Step 2: Uninstallation Progress
Getting Started with NetMiner
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• Step 3: Confirm Uninstallation is Finished.
Getting Started with NetMiner
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Software Update: using “Help >> Check Update” menu
• In order to use the feature of “Help >> Check Update” menu, your computer, in which
NetMiner 4 has been installed, should have an internet access.
• By clicking “Help >> Check Update” option in the main menu, NetMiner 4 will be
automatically updated with our latest version.
• If current version is latest, following message box will appear.
• Step 1: If new update is available, a message box will pop up in order to ask you to
update the software. Click “Yes.”
Getting Started with NetMiner
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• Step 2: From the NetMiner server, update file will be downloaded automatically.
• Step 3: After the download, upon “Update Setup Wizard,” please click “Next.”
•
• Step 4: Review License Agreement before installing. If you agree with it, click “I
Agree” button.
Getting Started with NetMiner
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•
• Step 5: You can see the installation progress. For the progress details, please click
Show details button.
• Step 6: Now NetMiner 4 is updated to its latest version. If you check “Run NetMiner
4,” NetMiner 4 will be launched on clicking “Finish” button.
Getting Started with NetMiner
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Getting Started with NetMiner
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II. Getting Started
Overview
1. Sample Data Used in This Guide
2. Launching NetMiner
3. Importing Data
4. Editing Data
5. Drawing Network Map
6. Styling Nodes by Node Attribute
7. Saving Network Map
8. Performing Data Analysis
9. Using Output Results
10. Saving Project and Exit
Getting Started with NetMiner
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Overview
Getting Started handles basic functions of NetMiner 4 for the beginners who are not
familiar to the unique interface of this software. This Guide is intended to help the
beginners just to follow the explanation step by step and to have experience about the main
features of NetMiner 4. Getting Started does not give full explanation of every feature of
this software.
You need to download the Sample Data used in this Guide at the following web page:
http://www.netminer.com
example_for_Getting_Started.zip
>> Support >> Resources >> Data Archives >>
1. Sample Data Used in This Guide
In this step, we will first give you some explanation about the sample data we will use
in the guide. You will import this sample data into NetMiner at the next step.
Although you can create new data using NetMiner, in most data analysis, data is
provided as an external file with formats such as xls, txt, csv etc.
This sample data has not been altered in order not to give any error message in the
process of importing. As almost every data analysis software requires that users
perform data cleansing process on import external file, NetMiner 4 also needs this data
cleansing process.
Please check the following files after unzipping the sample data archive file:
- Main Node_employee.xls
- 1-mode Network_work interact.xls
- 2-mode Network_purchase.xls
- Getting Started.nmf
Getting Started with NetMiner
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“Getting Started.nmf” is a NetMiner Project File. All the process explained in this
guide is contained in this Project file for your convenience, which can be opened by
just double-clicking it. Other three files are built as Microsoft Excel files. String at the
left side of the underscore, “_”, of the file name represents the type of each file, and
the string at the right side of the underscore, “_”, represents the content of each file.
Main Node, 1-mode Network Data, 2-mode Network Data is commonly used data-
types, and NetMiner can handle these types of data in an integrated DataSet.
Let’s look at each data.
Main Node_employee.xls: Yellow-colored leftmost column represents Nodeset. This
nodeset includes 22 employees. Green-colored uppermost row represents Attribute.
White-colored rows contain attribute information of each employee regarding
“Department,” “Job-ranking,” “Gender,” and “Education” attributes. You may notice
that this kind of data, which can be used for meaningful network analysis such as
blockmodeling, is in fact not specific for a network analysis, but common in most data
analysis software, which computes statistical measures.
1-mode Network_work interact.xls: Yellow-colored uppermost row and leftmost
column are for the same Nodeset. Each node at the leftmost column represents source
Getting Started with NetMiner
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node, while each node at the uppermost row represents target node. This kind of
network data is called as 1-mode network, because source Nodeset equals to the target
Nodeset. Nodeset in this data includes 22 employees from “Main Node_emplyee.xls”
file. White-colored cells represent how often the source node contacts the target node
for “work interact,” as the file title implies.
2-mode Network_purchase.xls: Yellow-colored column represents source nodes of
22 employees. Orange-colored row represents target nodes of 10 commodities that the
22 employees purchased. In this example, source Nodeset is not the same as the target
Nodeset, and this kind of data is called 2-mode network data. White-colored each cell
represents how many each employee purchased the target commodities as the file title
implies. The source Nodeset of 22 employees in this 2-mode network is the Nodeset
that comprises the previous 1-mode network. We call this Nodeset as Main Nodeset.
The target Nodeset (10 commodities) in the 2-mode network is called as Sub Nodeset.
Getting Started with NetMiner
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We have checked 3 types of data included in the sample data folder. These data are
commonly used types for network data analysis. Now we are going to import these
data into NetMiner and perform some analyses with visualization. Please note that this
guide does not provide every feature in detail, but help beginners to explore some main
features of NetMiner 4 in step-by-step manner.
2. Launching NetMiner
If your NetMiner 4 is installed with default option, you may see the shortcut icon on
the Desktop of your computer as follows.
To launch NetMiner 4, double click the NetMiner 4 shortcut icon or execute the
“NetMiner 4.exe” file in the NetMiner 4 installation folder. If you installed NetMiner 4
at default folder, you may find this file in the following folder:
“C:\Program Files\Cyram\NetMiner 4”
You can see the following splash image while the NetMiner 4 is being launched.
Getting Started with NetMiner
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This is the capture image of NetMiner 4 with blank project being created. Now it is
ready to import data and perform analysis and visualization process.
3. Importing Data
Step 1. You can see the following dialogue box for importing Excel file by selecting
Main Menu: File >> Import >> Excel file.
Getting Started with NetMiner
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Step 2. Click Browse button at the top area of this dialogue box for selecting Excel file
to import. We are going to import the “Main Node_employee.xls” file for the first time.
Select this file in the file selection dialogue box and click OK. You can see some part
of the selected data in the Preview area.
Check the Column Header check box at Headers area because the “Main Node
employee.xls” has column header that describes attribute of each node. You can check
it by opening the imported Excel file. You will see that the color of the column header
changes to gray color after you check the box.
Select Main Nodeset in the Data Type area.
Select New in the Target Workfile area.
Select Insert Newly discovered nodes in the Data Integrity Option area.
Click OK if you have selected the options in this dialogue box as mentioned above.
Getting Started with NetMiner
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Step 3. You can see the Workfile created in Workfile Tree area and the contents of the
Workfile in the Current Workfile area.
Step 4. If you double click the Main Nodeset in Current Workfile area, you can see the
imported data in the right side of the program as follow.
Getting Started with NetMiner
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Step 5. Now we are going to import 1-mode Network data and 2-mode Network data
into NetMiner successively. These data will be imported to the current Dataset that
contains only one Nodeset data by following the Step 1 to Step 4. (Just for your
information, all the three sample data will be stored in the integrated DataSet of the
last Workfile.) Detailed description of data structure of NetMiner is described in
“Using NetMiner - Concepts – Data Structure.”
Launch the dialogue box for importing (Main Menu: File >> Import >> Excel File)
and select options in the dialogue box for importing data as follows.
Click Browse button at the top area of this dialogue box for selecting Excel file to
import. We are going to import the “1-mode Network_work interact.xls” file. Select
this file in the file selection dialogue box and click OK. You can see some part of the
selected data in the Preview area.
Check the Column Header and Row Header check box at Headers area.
Select 1-mode network data in the Data Type area and select Matrix as a type of 1-
mode network data.
Select Current in the Target Workfile area.
Select Insert Newly discovered nodes in the Data Integrity Option area.
Click OK if you have selected the options in this dialogue box as mentioned above:
Getting Started with NetMiner
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Step 6. You can see that the 1-mode network data item is added to the current DataSet
by checking the Current Workfile area. If you double click the data item, you can see
the 1-mode network data at the right side of the program. In Workfile Tree area, a new
item is expanded from the first Workfile. (Note: New Workfile is expanded from the
current Workfile automatically whenever any change occurs in Current Dataset.) This
automatic expansion will help the analyst to track the history of the data analysis.
Getting Started with NetMiner
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Step 7. In the same way, you can import the 2-mode network data.
Launch the dialogue box for importing (Main Menu: File >> Import >> Excel File)
and select options in the dialogue box for importing data as follows.
Click Browse button at the top area of this dialogue box for selecting Excel file to
import. We are going to import the “2-mode Network_purchase.xls” file. Select this
file in the file selection dialogue box and click OK. You can see some part of the
selected data in the Preview area.
Check the Column Header and Row Header check box at Headers area.
Select 2-mode network data in the Data Type area and select Matrix as a type of 2-
mode network data. Leave the Target Nodeset as default selection.
Select Current in the Target Workfile area.
Select Insert Newly discovered nodes in the Data Integrity Option area.
Click OK if you have selected the options in this dialogue box as above.
Getting Started with NetMiner
37
Step 8. You can view the imported 2-mode network data as below. Another item is
expanded in the Workfile Tree area. Double click the 2-mode network data item at
Current Workfile area and the 2-mode network data will be shown at the right side of
the program.
All the three sample data are now imported into NetMiner, we are ready for quick-tour
on NetMiner main features such as data editing, transforming, analysis, visualization
etc, from right next section below.
4. Editing Data
NetMiner has useful and powerful editing functions. You may be familiar with
NetMiner editing interface from spread sheet software, but its interface is specialized
in users’ handling of network data.
Current Workfile Area shows the hierarchical data structure from the imported sample
data from the previous steps, which include Main Nodeset, 1-mode Network data, Sub
Nodeset and 2-mode Network data. Each item is automatically named based upon the
source filename. If item name is too long to handle, you can rename the item name in
Current Workfile by right-clicking to menu “rename” or by pressing F2 function key.
Getting Started with NetMiner
38
We have changed the name of each item as shown below. Try it!
Workfile Tree shows how many data transformation has been made after the import.
Each leaf expansion of item in the tree structure represents new data transformation on
top of prior dataset. In other words, the final Workfile of the structure include all the
information including the prior two dataset; therefore, for the sake of briefness, you
can simply delete those two Workfiles by selecting the Workfiles and pressing the F2
Function key or “Delete” menu in the mouse right button menu.
What we have done so far is saved in “Getting Started.nmf.” If you had a difficulty in
following the previous steps, you can use this file to continue from this point.
Now we are going to edit each data in Current Workfile.
Modifying weight in 1-mode network data: First, let’s look at the imported 1-mode
network data in NetMiner. Double click the 1-mode network data item in Current
Workfile which is designated by red lined box in the following picture.
Getting Started with NetMiner
39
You can see that there is no link from “Jessica” to “Anna” in the following picture.
Now let’s modify the cell value as “3”. Just click the cell and input “3”. We have added
new link with weight “3”. It is easy to change the cell value in Matrix View. NetMiner
editing panel has 3 views: Matrix, Link List and Map. You can change it by selecting
the inner tab at the bottom of the editing panel. Detailed explanation is covered in
“Using NetMiner - Concept – Work Environment”.
Adding Main Nodeset Attribute Item: Double click the red lined data item which
represents the Main Nodeset of this Workfile, you can see the Main Nodeset and
attributes at the right side of the panel.
Getting Started with NetMiner
40
Click “Insert Attribute” in the mouse right click menu at the column label area in the
editing panel. You can see the “New Node Attribute” dialogue box for adding attribute
item.
Input the Attribute Name as “Duration,” select the Attribute Type as “Number,” and
click OK. You will see the new column with the cell values of “-999.999” as shown
below. “-999.999” in NetMiner means that the value of the cell is not provided or
means Missing Value. Input cell values of “Duration” column as below:
Full explanation about the editing in NetMiner is covered in “Using NetMiner - Tasks
– Data Handling – Editing Data”.
Getting Started with NetMiner
41
5. Drawing Network Map
Here you will learn to draw network map. Generally in network data analysis,
visualization gives the intuition about the global pattern of data and a starting point to
dig up.
Select main menu: Visualize >> Spring >> 2D (CTRL+1).
You can see a Session is created as shown below. It is composed of two parts. At the
left side of it, 22 nodes without links are scattered. At the right side of it, there are
various options for selecting and controlling. We will call the left side as “Output
Panel” and the right side as “Control Panel.” In addition, each item in the Control
Panel is called “Control Item”. You can find its full description in “Using NetMiner -
Concepts – Work Environment”
Getting Started with NetMiner
42
Check the “work_interact” check box in the “Network” Control Item. You will see
new links created between nodes on the Output Panel without change of the
coordinates of the nodes. Press “Run Layout” button in the Control Panel without
modifying other options. A network map will be drawn according to the layout
algorithm selected in the Control Panel.
Full explanation about visualization is covered in “Using NetMiner - Tasks – Visual
Exploration”.
6. Styling Nodes by Node Attribute
Each node on the network map drawn at the previous step represents employee. You
can give each of these nodes different style (shape, color, size) according to the
attribute of each node. For example, we are going to give different color to the nodes
based upon its department attribute.
Click the icon surrounded by the red box in the Tool Bar as shown below:
Getting Started with NetMiner
43
You can see a dialogue box for giving different style to each node according to the
attribute of node.
Select Color tab. And select Variable as “Node Attribute – Department” as follows.
And click Apply button.
You can see the color of each node change as follows. Using NetMiner, you can give
any style to any selected nodes and links. Full description is covered in “Using
NetMiner - Tasks – Visual Exploration – Styling Nodes and Links”.
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7. Saving Network Map
To save the network map as picture file, click main menu “Map – Capture Map – To
File.”
NetMiner supports BMP, JPG, SVG (Scalable Vector Graphics) formats for saving
picture.
8. Performing Data Analysis
Let us explain how to generate output results. For example, we are going to calculate
the “Degree Centrality” of each node. Degree Centrality is a measurement for
centrality of each node based on “how many direct neighbors a node have.”
Click main menu “Analyze >> Centrality >> Degree” for analyzing Degree
Centrality. You can see a Session created. Output results will be shown at the left gray
colored side. At the right side of it, you can see a few options for selection. Select
“work_interact” in the Input Control Item. Click “Run Process” button at the bottom
of the Control Panel.
You can see that the output results are generated at the left side. Each of these outputs
can be selected by the Inner Tab at the bottom of the output panel as follows. As the
output results of the “Degree Centrality” analysis, “Main Reports, Degree Centrality
Vector, Spring Map and Concentic Map” is generated at the same time. You can check
each of these outputs by clicking the inner tab.
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9. Using Output Results
Let’s employ the previous output results for another process in NetMiner. We are going
to draw box plot comparing the “In Degree Centrality” value with respect to “Gender”.
For this process, we need to add the previous result of “In Degree Centrality Vector” to
the attribute of Main Node.
At the bottom of the Output Panel, click the Degree Centrality Vector Inner Tab, and
then click the main menu “Data >> Add Output Table >> Main Node Attribute.”
You can see the dialogue box for selecting data as follows. Select “In-Degree
Centrality” and click OK.
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Now you can check the added “In-Degree Centrality” vector in the Main Node
Attribute data as follows. Double click the employee in the Current Workfile and you
can check the added attribute as follows. This added attribute can be used for another
process that requires main node attribute data.
Click main menu “Chart >> Box Plot.” We are going to compare the “In Degree
Centrality” with respect to “Gender.” So select the control panel option as follows:
Dependant Variable: In-Degree Centrality, Independent Variable: Gender.
Click “Run Process” button, and check the box plot in the Output Panel at the left side.
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10. Saving Project and Exit
When you need to exit NetMiner or to open (create) another NetMiner project, you
need to select the saving option as follows. “Untitled Project” will be removed, unless
you save it.
You can save your file by selecting “File >> Save (CTRL + S)”.
The extension for the NetMiner Project file is NMF.
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“Unleashing Hidden Power of Networks”
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Tel. +82-2-886-6077
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Email. [email protected]