Download as PDF, PPTX
Uploaded byOliver Roick
location based social networks - towards a research agenda
The document discusses key topics in location-based social networks and proposes a research agenda. It introduces location-based social networks and their components like geotagging. It then outlines three main areas for further research: (1) analyzing which applications and data are most useful, (2) assessing data quality issues like positional accuracy and attribute completeness, and (3) resolving data fusion problems when integrating information from different sources like deciding how to reconcile conflicting location records.
location based social networks - towards a research agenda
- 1. location based social networks towardsa research agenda Oliver Roick ‣ Chair of GIScience ‣ Heidelberg University
- 2. what are locationbased social networks?
- 3. social network sites Messages Sharing Friends
- 4. social network sites Messages location Sharing Friends
- 5.
- 6.
- 7. towards a researchagenda
- 8. towards a researchagenda 1 applications & data 2 quality assesment 3 fusion of data sets
- 9. 1 which applications? 1%2+3' !"#$%&'()*+,%#-")' .%,/+-)0' 4$,+#*",5' 678'
- 10. 1 what data? tracks textual information points of interest
- 11. 2 quality positionalaccuracy Actual
- 12. position Mandy's
- 13.
- 14.
- 15.
- 16.
- 17.
- 18.
- 19. 2 quality attributecompleteness Foursquare Facebook records overall 114.284 24.263 full address 33.528 (29%) 1 (0%) city + street 59.999 (52%) 17.450 (71%) city 76.010 (67%) 21.287 (88%) street 62.432 (55%) 17.504 (72%) category 100.852 (88%) 24.263 (100%)
- 20. 2 quality dataset completeness temporalevolution influence of user activity
- 21. 3 fusion problem Facebook Foursquare
- 22. 3 fusion themandy‘s problem
- 23. 3 fusion themandy‘s problem Mandy's Mandy's
- 24.
- 25.
- 26. Diner Mandy's
- 27. Dinner Mandy's
- 28.
- 29.
- 30.
- 31.
- 32.
- 33. 3 fusion geometryconflation Actual
- 34. position Mandy's
- 35.
- 36.
- 37.
- 38.
- 39. 3 fusion attributeconflation Mandy's Mandy's
- 40. Dinner which is the „most correct“ record? Mandy's
- 41. Diner how can the „most correct“ record be complemented?
- 42.