InfoVis Chapter 5 - Text Visualization Techniques

Objectives and Skills

• Algorithms to visualize text (+ complexity)
• classify methods based on application
• implement in JavaScript

Visual Elements

• Text
• Typographic elements
• Other graphical elements

Problem

• Long words occupy more space which leads to a misconceived impression of weight or importance
• Other graphical elements can hide the relevant information

Unstructured Text → Structured Data

• Lexical Processing

• Syntactic Processing

• Semantic Processing

• Connections among entities within and across documents

  • text mining, information extraction

• Concordances and word frequencies

  • literature analysis or linguistics
  • search for language patterns and structure

• Relationship between words

  • literary analysis or citation analysis

Corpus

Visualization Techniques

Word Cloud Tag Cloud

AABB or OBB hierarchical AABBs, Sprites or Masks

Intersection Test

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Phrase Net Word Tree

Natural Language Processing

Stream Graph