Lesson04

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Visualising and Analysing High-dimensional Datasets


Content

Nature of High-dimensional Datasets

  • Categorical data
  • Continuous data
  • Hybrid data

Continuous Data Visualisation Techniques

  • Scatterplot matrix
  • Parallel coordinate plot
  • Heatmaps

Categorical Data Visualisation Techniques

  • Mosaic plots
  • Parallel Sets [1]

Hybrid Data Visualisation Techniques

  • Trellis or small mutiples
  • Glyphs or star plot

Specialised High-dimesional Data Visualisation Toolkits

  • Table Lens [2] and demo [3]
  • Hierarchical Clustering Explorer [4]


Hands-on Session

  • Visualising and analysing multivaritae continuous data using parallel coordinate plot
  • Visualising and analysing multivariate continuous data using trellis
  • Visualising and analysing multivaritae categorical data using mosaic plot
  • Visualising and analysing multivariate categorical data using parallel sets


Daily Readings

Day Time required Readings
Monday 30 mins An Introduction to Visual Multivariate Analysis [5]

The scatter-plot matrix: a great tool [6]

Multidimensional Detective [7] (Must read!)

Wikipedia: Heatmap [8]

Tuesday 30 mins Understanding Area Based Plots: Mosaic Plots [9]

Parallel Coordinates [10]

Better Know a Visualization: Small Multiples [11]

Wednesday 30 mins Parallel Sets. [12]

Visualizing Defect Percentages with Parallel Sets[13]

Parallel Sets vs. Mosaic Plots (Take I)[14]

Discovery Exhibition: Parallel Sets [15]

Thursday 3 hours Lesson discussion and hands-on exercise
Friday 30 minutes Multivariate Analysis Using Parallel Coordinates [16]

Better Know a Visualization: Parallel Coordinates [17]

Turning a Table into a Tree: Growing Parallel Sets into a Purposeful Project [18]

TableLens: A Clear Window for Viewing Multivariate Data [19]

References

Edward R. Tufte (2001) The Visual Display of Quantitative Information (2nd Edition), Graphics press, Connecticut, USA. Chapter 4-9

Stephen Few (2004) Show Me the Numbers: Designing Tables and Graphs to Englighten, Analytical Press, Oakland, USA.

Naomi B. Robbins (2005) Creating More Effective Graphs, John Wiley & Sons, New Jersey, USA.

Dona M. Wong (2010) The Wall Street Journal. Guide to Information Graphics, W.W. Norton & Company Ltd. New York, USA.



Discussion

Discussion Lesson 04