Informa(on  Visualiza(on  for  Knowledge  Discovery:  An  Introduc+on  

Krist  Wongsuphasawat  Dept.  of  Computer  Science  &    Human-­‐Computer  Interac+on  Lab  University  of  Maryland    CP30  /  Intania  87  

University  of  Maryland,  College  Park  Ò near  Washington,  DC  

Where?  

HCIL  Ò Human-­‐Computer  Interac+on  Lab  Ò hKp://www.cs.umd.edu/hcil/  

HCI  Ò  Human-­‐Computer  Interac+on  Ò  A  discipline  concerned  with  the  analysis,  design,  implementa+on,  

and  evalua+on  Ò  of  interac+ve  compu+ng  systems  for  human  use  

Design

Implementation

Evaluation

Analysis

Why  HCI?  

1950 2030 1990

Human Abilities

Computer Abilities

HCI  Research  Ò Devices  

É Touch  screen,  e-­‐Book  Reader,  Wii,  Natal,  Pen  É Mobile  Phone  

Ò User  Interfaces    É  for  collabora+on,  elderly,  children,  handicaps  É Query,  Zoomable  É …  

Ò Design  Process  Ò  Evalua+on  methods  Ò  Informa(on  Visualiza(on  (Info.  Vis.)  Ò  Etc.  

Imagina(on  

MicrosoK  Surface  

Nintendo  Wii  

Project  Natal  

Mobile  

Mobile  

Amazon  Kindle  

Interna(onal  Children  Digital  Library  

GUI  for  elderly  

Informa(on  Visualiza(on  

Challenges  Ò  Huge  amount  of  data  Ò  How  to  understand  and  make  use  of  it?  Ò  What  ques+on  to  ask?  

Example  

Challenges  Ò  Iden+fy  

É  Trends  É  PaKerns  É  Outliers  

Ò  Goals  É  Communica+on  É  Discovery  

The  eye...    the  window  of  the  soul,    is  the  principal  means  by  which  the  central  sense    can  most  completely  and  abundantly    appreciate  the  infinite  works    of  nature.    Leonardo  da  Vinci(1452  -­‐  1519)  

The eye... the window of the soul, is the principal means by which the central sense can most completely and abundantly appreciate the infinite works of nature. Leonardo da Vinci(1452 - 1519)

The eye... the window of the soul, is the principal means by which the central sense can most completely and abundantly appreciate the infinite works of nature. Leonardo da Vinci(1452 - 1519)

Gestalt  Principles  hKp://psychology.about.com/od/sensa+onandpercep+on/ss/gestaltlaws.htm  

A picture is worth a thousand words.

Informa(on  Visualiza(on  Ò  Provide  tools  that  present  data  in  a  way  to  help  people  understand  and  gain  insight  from  it.  

Ò  The  use  of  computer-­‐supported,  interac+ve,  visual  representa+ons  of  abstract  data  to  amplify  cogni+on.  

Interdisciplinary  Ò human-­‐computer  interac+on,    Ò computer  science,    Ò graphics,    Ò visual  design,    Ò psychology,    Ò and  business  methods  

Example  

ScaTer  Plot  

Correla(on…  What  else?  

Outliers  

He

Rn

John  Snow:  The  London  Cholera  Epidemic  of  1854    

John  Snow:  The  London  Cholera  Epidemic  of  1854    

Ò hKp://www.csiss.org/classics/content/8  

Charles  Minard's  map  of  Napoleon's  march  

The  growth  of  Facebook  

Facebook  Ò Video  

Informa(on  Visualiza(on:  Mantra  Ò  Overview,  zoom  &  filter,  details-­‐on-­‐demand  Ò  Overview,  zoom  &  filter,  details-­‐on-­‐demand  Ò  Overview,  zoom  &  filter,  details-­‐on-­‐demand  Ò  Overview,  zoom  &  filter,  details-­‐on-­‐demand  Ò  Overview,  zoom  &  filter,  details-­‐on-­‐demand  Ò  Overview,  zoom  &  filter,  details-­‐on-­‐demand  Ò  Overview,  zoom  &  filter,  details-­‐on-­‐demand  Ò  Overview,  zoom  &  filter,  details-­‐on-­‐demand  Ò  Overview,  zoom  &  filter,  details-­‐on-­‐demand  Ò  Overview,  zoom  &  filter,  details-­‐on-­‐demand    

Treemap:  Stock  market,  clustered  by  industry  

Map  of  the  Market  -­‐  hKp://www.smartmoney.com/map-­‐of-­‐the-­‐market/  

Market  falls  steeply  Feb  27,  2007,    with  one  excep(on  

Market  falls  311  points  July  26,  2007,    with  a  few  excep(ons  

Market  mixed,  October  22,  2007,    Energy    &  Basic  Material  are  down  

TimeSearcher  Ò Demo  Ò hKp://www.cs.umd.edu/hcil/+mesearcher  

LifeLines  

Traffic  

Wordle:  Google’s  Corporate  Informa(on  

Baby  NameVoyager  Ò hKp://www.babynamewizard.com/voyager  

NetFlix  Rental  PaTerns  

http://www.nytimes.com/interactive/2010/01/10/nyregion/20100110-netflix-map.html

NetFlix  (2)  

NetFlix  (3)  

NetFlix  (4)  

SocialAc(on  Ò Video  Ò hKp://www.cs.umd.edu/hcil/socialac+on  

Informa(on  Visualiza(on:  Data  Types  Ò  1-­‐D  Linear  Document  Lens,  SeeSo^,  Info  Mural,  Value  Bars  Ò  2-­‐D  Map    GIS,  ArcView,  PageMaker,  Medical  imagery  Ò  3-­‐D  World    CAD,  Medical,  Molecules,  Architecture  

 Ò  Mul(-­‐Var    Parallel  Coordinates,  Spo_ire,  XGobi,  Visage,  

       Influence  Explorer,  TableLens,  DEVise  

Ò  Temporal    Perspec+ve  Wall,  LifeLines,  Lifestreams,          Project  Managers,  DataSpiral  

Ò  Tree    Cone/Cam/Hyperbolic,  TreeBrowser,  Treemap  Ò  Network  Netmap,  netViz,  SeeNet,  BuKerfly,  Mul+-­‐trees  

(Online  Library  of  Informa+on  Visualiza+on  Environments)  hKp://otal.umd.edu/Olive  

Info

Viz

S

ciV

iz .

ManyEyes:  A  web  sharing  plajorm  

hKp://services.alphaworks.ibm.com/manyeyes/app  

Conclusion  Ò  Informa+on  Visualiza+on  

É  Provide  tools  that  present  data  in  a  way  to  help  people  understand  and  gain  insight  from  it.  

É  Applicable  to  various  domains  Ò  More  info  

É  hKp://www.cs.umd.edu/hcil  É  hKps://wiki.cs.umd.edu/cmsc734_09/  

Ò  Contact  É  kristw@cs.umd.edu  É  hKp://www.cs.umd.edu/~kristw  

Ò  Acknowledgement  É  Ben  Shneiderman’s  slides  É  Ben  Bederson’s  slides  É  hKp://www.cs.umd.edu/hcil/pubs/presenta+ons/  

Thank  you