Lesson 9

Text Visualisation:

Methods and Applications

IS428 Visual Analytics for Business Intelligence

Content

Motivation
Introduction to Text Visualisation
Text Visualisation Methods
Text Visualisation Applications

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Introduction to Text Visualisation

History of Text

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Introduction to Text Visualisation

Text as historical archive

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisatio

Introduction to Text Visualisation

Text as a mode of communication.

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Introduction to Text Visualisation

Textual data are readily available from various media.

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Fundamental of Text Visualisation

Understanding – get the “gist” of a document
Grouping – cluster for overview or classification
Compare – compare document collections, or
Inspect evolution of collection over time
Correlate – compare patterns in text to those in other data, e.g., correlate with social network

Why visualising text?

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Fundamental of Text Visualisation

Lexical level, transforming a string of characters into a sequence of atomic entities, called tokens.
Syntactic level, identifying and tagging (anotating) each token’s functions.
Semantic level, extracting of meaning and relationships between pieces of knowledge derived from the structures identified in the syntactical level.

Levels of text representation

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Fundamental of Text Visualisation

Warning, not all text are written in English and in digital forms!

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Text Visualisation Methods

Tag Cloud

A tag cloud (word cloud, or weighted list in visual design) is a visual representation for text data, typically used to depict keyword metadata (tags) on websites, or to visualize free form text.
'Tags' are usually single words, normally listed alphabetically, and the importance of each tag is shown with font size or color.

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Text Visualisation Methods

Tag Cloud

One-word tag cloud of DBS’s corporate values statement created using Many Eyes.

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Text Visualisation Methods

Tag Cloud

Two-word tag cloud of DBS’s corporate values statement created using Many Eyes.

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Text Visualisation Methods

Tag Cloud

Journey Back to Singapore by Chen Show Mao

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Text Visualisation Methods

Tag Cloud

A blog tool or website analysis for search engine optimization

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Text Visualisation Methods

Tag Cloud

Compress Yourself – Tag Cloud Your Resume

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Text Visualisation Methods

Wordle

A toy for generating “word clouds” from text that you provide.

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Text Visualisation Methods

Wordle

Word Clouds of Corporate Values Statements

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Text Visualisation Methods

Wordle

Twitter Word Map for Android

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Text Visualisation Methods

Wordle

D3.js way

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Text Visualisation Methods

Parallel Tag Cloud

Exploring and Analysing faceted text corpora

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Text Visualisation Methods

Bubble Cloud

D3.js way

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Text Visualisation Methods

Bubble Cloud

Bubble cloud in the news

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Text Visualisation Methods

Word Tree

A visual search tool for unstructured text, such as a book, article, speech or poem. It lets you pick a word or phrase and shows you all the different contexts in which the word or phrase appears.
The contexts are arranged in a tree-like branching structure to reveal recurrent themes and phrases.

IS428 Visual Analytics for Business Intelligence

Lesson 9: Text Visualisation

Text Visualisation Methods

Phrase Net

A phrase net diagrams the relationships between different words used in a text. It uses a simple form of pattern matching to provide multiple views of the concepts contained in a book, speech, or poem.