(발제)lifeflow:visualizing an overview of event sequences:chi2011-krist...
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TRANSCRIPT
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LifeFlow: Visualizing an Overview of Event Sequences
Hyelan
CHI 2011 - Session: Visual Analytics
Krist WongsuphasawatJohn Alexis Guerra GomezCatherine PlaisantTaowei David WangBen ShneidermanMeirav Taieb-Maimon
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INTRODUCTION
- Event sequences are series of timestamped event
- Event sequence analysis
1) the sequence of eventse.g. arrival > ICU
2) time gaps between eventse.g. ER > (after 5 hours) > ICU
- Rangefrom examining a single record in detail to various ways of filtering and searching multiple records
- ��g h8�V �� yni �Pc ���u/ ‘�Z �P’h S&]
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MOTIVATION
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42�d T� �
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MOTIVATION
^M~ 9_g f�K g? �l hEg J}H <BV �Lh 0e(�tVA� �� bounce back monitoring)
Event Definition- ER (Emergency Room)- ICU (Intensive Care Unit)- IMC (Intermediate Care)- Floor
s Z ?�- summary of all the transfer sequences and their temporal attributes
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LIFEFLOW DISPLAY
1) Aggregation
2) Visualization
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LIFEFLOW DISPLAY
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RELATED WORK
1) Temporal Data Visualization2) Hierarchy Visualization
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RELATED WORK 1) Temporal Data Visualization
Single Record Visualization- long history of visualizing event sequences- most common approach > timeline-based - e.g. 9_ �l � 3g �(c W$�g row' D, ��g row� � h8�g {�.- g5
Visualization of multiple records in parallel- most common approach > stack instances of single-record - ring / spiral- typically provide searching and filtering mechanisms- e.g. 9_ �l � 3g �(c W$�g row' D, ��g row� � h8�g {�.- g5
Visualization of combined records- �mDg �;- provide an abstraction of multiple records- h8�g >�- �H��#b' :Ws��(Continuum), J�ni N1.- :Ws� 67� ke(LifeLines2)W$�g row' D, ��g row� � h8�g {�.- g5- h 67c J�V ", h8�g <�- :Ws�� ru/ � J}H�g ‘��’- �P��� S&]
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Spiral timeline
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RELATED WORK 2) Hierarchy Visualization
- \C 4� �(c hierarchy structure' �*d / S �e
- Hierarchical Structures
Hyperbolic Tree Circular Treemap
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Rectangular Treemap Icicle Tree
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Sunburst Tree Sunray Tree
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Phylogenetic Tree
- �u/ h% q+g `� pg J�� 67c 0c <BVA tZ�� W�� � h8��g J� �h- Q� S&]
- LifeFlowVA� 4� J}H- �i� F k, � J}H g z�a(:�o�),h8� �g J�wV �� ZR o:- � �V �P� F k�( !li
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LIFEFLOW INTERACTIVE FEATURES
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LIFEFLOW INTERACTIVE FEATURES
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EVALUATION
� �g case study >> user study (?[D, �ID ��)
CASE STUDY I: Medical Domain- Washington Hospital Center- quickly see the big picture- easy to find anomalies- formulating queries easily- useful for long-term monitoring and quality control
CASE STUDY II: Transportation Domain
- Center for Advanced Transportation Technology Laboratory at the University of Maryland- SQL |.- ?[�A V$- xO�� �:� G]- ��� F kU� =o@n J}H- xO��� [h�
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EVALUATION: Case Study I (medical domain)
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EVALUATION: Case Study II (transportation domain)
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SUMMARY
LIFEFLOW
Temporal data Visualization
> to Overview of the Data> allow users to Understand patterns and find anomalies> easy to learn in a short period