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The Complexity of
Urban Information
Gathering
Abdulfatai Popoola
Master Thesis Defense
Master Thesis Defense
Master Thesis Defense
Representation Formats
Primal Dual
Master Thesis Defense
Master Thesis Defense
Master Thesis Defense
Measuring Difficulty
Eigenvector Centrality
Master Thesis Defense
Master Thesis Defense
Master Thesis Defense
Master Thesis Defense
Stage 1: Data Collection
 Openstreetmap
 Challenges
 Extra data: age, crime, continent, structure, area, population
Master Thesis Defense
Merging Roads
Master Thesis Defense
Master Thesis Defense
Master Thesis Defense
Master Thesis Defense
Master Thesis Defense
Artificial data
Processed Data
 Inter metric correlations
禽庄壊界看厩艶姻庄艶壊
Correlation
 Age
Correlation
 Age
Correlation
 Crime I
Correlation
 Crime II
Master Thesis Defense
Continental Boxplots
Entropy Gini Coefficient
Stats
Difference
Asia-Europe False
Asia-North America True
Europe-North America True
df H P < 0.05
Entropy 2 51.62 True
Gini Coefficient 2 44.65 True
Master Thesis Defense
Structural Boxplots
Entropy Gini Coefficient
Stats
df H P < 0.05
Entropy 2 2.20 False
Gini Coefficient 2 2.07 False
No significant Correlations
 Area
 Population
Contributions
 Model
 JIZNA
 Applications
2012
Tag Challenge
Tag Challenge Cities
 Entropy
More to come
Data
Dynamic characteristics
DARPAs Red Balloon Challenge
Finally
 Just about three major things
 The age of a city can influence the ease of search.
 City structure has no significant influence on ease of search.
 North American cities easier to search than European/Asian cities.
Thank you.
Questions
Master Thesis Defense
extras
Master Thesis Defense
Projections
Normalization

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Master Thesis Defense