VICTOR DE GRAAFF THIS IS ME

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1 POINT OF INTEREST TO REGION OF INTEREST CONVERSION VICTOR DE GRAAFF MAURICE VAN KEULEN ROLF DE BY Geo-social Recommender Systems: Research Proposal 1 VACATION MALEDIVES Semantic Enrichment of GPS Trajectories 2

2 VICTOR DE GRAAFF THIS IS ME 3 HOLIDAY HOME THIS IS MY IDEAL VACATION 4

3 VACATION SEARCH THE FIRST QUESTION 5 VACATION SEARCH MY ANSWER 6

4 VACATION SEARCH THE FUTURE 7 VACATION SEARCH THE FUTURE 8

5 USER PROFILING SOURCES OF INFORMATION 9 GPS TRAJECTORIES USEFUL INFORMATION 10

6 GPS TRAJECTORIES ANNOTATION APPROACH? Points of Interest GPS Annotator? GPS Trajectories 11 WEB HARVESTING SEARCH 12

7 WEB HARVESTING SEARCH RESULTS 13 WEB HARVESTING DETAILED INFORMATION PAGE 14

8 GPS TRAJECTORIES ANNOTATION APPROACH Points of Interest GPS Annotator GPS Trajectories 15 YELLOW PAGES VISUALIZATION OF DATA 16

9 YELLOW PAGES DRAWBACKS OF DATA Point-referenced POIs Poor quality of geographical data 17 CADASTRAL DATA VISUALIZATION OF DATA 18

10 CADASTRAL DATA DRAWBACKS OF DATA Expensive to obtain Not always available Lack of polygon usage information 19 OPENSTREETMAP VISUALIZATION OF DATA 20

11 OPENSTREETMAP DRAWBACKS OF DATA Detail level polygons too coarse Scarce polygon usage information Information out-of-date 21 SOLUTIONS STEPS Re-geocode addresses ROI estimation 22

12 SOLUTIONS FOOTPRINT SIZE ESTIMATION Circle Approach (CA) Voronoi diagram (VD) Voronoi diagram with additional addresses (VD+) Voronoi diagram of OpenStreetMap polygons (VOSM) Voronoi diagram of OpenStreetMap polygons with additional addresses (VOSM+) 23 SOLUTIONS RE-GEOCODING 24

13 CIRCLE APPROACH (CA) VISUALIZATION 04/03/ CIRCLE APPROACH WITH BOUNDARIES (CAB) VISUALIZATION 04/03/

14 VORONOI DIAGRAM (VD 300) VISUALIZATION 04/03/ VORONOI DIAGRAM WITH LIMITED RADIUS (VD 10) VISUALIZATION 04/03/

15 VORONOI DIAGRAM WITH ADDITIONAL ADDRESSES (VD+) VISUALIZATION 1 04/03/ VORONOI DIAGRAM WITH ADDITIONAL ADDRESSES (VD+) VISUALIZATION 2 04/03/

16 VORONOI DIAGRAM OF OSM POLYGONS (VOSM) VISUALIZATION 04/03/ VORONOI DIAGRAM OF OSM POLYGONS WITH ADDITIONAL ADDRESSES (VOSM+) VISUALIZATION 1 04/03/

17 VORONOI DIAGRAM OF OSM POLYGONS WITH ADDITIONAL ADDRESSES (VOSM+) VISUALIZATION 2 04/03/ CIRCLE APPROACH VISUALIZATION 34

18 GPS TRAJECTORIES ANNOTATION APPROACH Points of Interest GPS Annotator GPS Trajectories 35 HOLIDAY HOME THIS IS MY IDEAL VACATION 36

19 POINT OF INTEREST TO REGION OF INTEREST CONVERSION VICTOR DE GRAAFF MAURICE VAN KEULEN ROLF DE BY Geo-social Recommender Systems: Research Proposal 37 INTRODUCTION & MOTIVATION TOBLER S FIRST LAW OF GEOGRAPHY Everything is related to everything else, but near things are more related than distant things. (Waldo Tobler [1] ) 38

20 INTRODUCTION & MOTIVATION WHAT IS A GEO-SOCIAL RECOMMENDER SYSTEM? A system that uses geographical information and social media content to extract personalized recommendations. 39 INTRODUCTION & MOTIVATION WHAT IS A GEO-PROFILE? Summary of information about the context of a location most relevant for the decisions to be supported 40

21 INTRODUCTION & MOTIVATION RESEARCH GOAL To create a generic toolset to support the creation of geo-social recommender systems 41 INTRODUCTION & MOTIVATION INFORMATION FLOW IN A GRS Information Collection Information Enrichment Recommendation Selection 42

22 CHALLENGES INFORMATION COLLECTION Geo-referenced entity resolution Information extraction 43 CHALLENGES INFORMATION ENRICHMENT 44

23 CHALLENGES INFORMATION ENRICHMENT 45 CHALLENGES RECOMMENDATION SELECTION Definition of a meta-model for data harvesting and profile matching Recommendation relevance assessment 46

24 VALIDATION SCENARIO EUROCOTTAGE 47 VALIDATION SCENARIO SOURCES OF USER-GENERATED CONTENT 48

25 PROPOSED SYSTEM ARCHITECTURE 49 VALIDATION SCENARIO PRODUCT PROFILE 50

26 VALIDATION SCENARIO USER PROFILE 51 VALIDATION SCENARIO PREVIOUS PURCHASE PROFILE 52

27 PROPOSED SYSTEM ARCHITECTURE HETEROGENEOUS GRAPH MATCHING USING HETESIM Source: [2] 53