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What are hot topics in GIscience, Geoinformatics, GeoIT and how to prove this?
Gisience: theories and concepts Presentation from Gabriel Schendl
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Content (1) Hot topics in Gisicence, Geoinformatics, GeoIT
Volunteered Geographic Information (VGI) Definitions and Introduction Pillars of VGI Examples of VGI: Wikimapia, OpenStreetMap VGI as input for research and mapping Quality of VGI Reasons for collecting VGI VGI: hot topic in Giscience, Geoinformatics, and GeoIT
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Content (2) Indoor Positioning Systems (IPS)
Definition and Introduction Topologies of IPS Classifications of IPS Components of IPS Performance of IPS Introduction to positioning methods Introduction to IPS technologies IPS: hot topic in Giscience, Geoinformatics, and GeoIT
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Hot topics Big data Social media data OBIA and ABIA Crime analysis
Volunteered Geographic Information Collective Sensing / Location Based Services Indoor Positioning
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VGI: Definitions and Introduction
Definition: „geographic information acquired and made available to others through the voluntary activity of individuals or groups, with the intent of providing information about the geographic world (Elwood, Goodchild et al. 2012)“ VGI refers to „the creation of new geographically-based initiatives and abilities in Web sites by large numbers of untrained private citizens with or without formal geographic expertise or qualification (Loo Arancibia 2011)“ Involvement of people creating information New development of GIS
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Pillars of VGI
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Examples of VGI: Wikimapia
(accessed on January 3, 2017)
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Examples of VGI: OpenStreetMap
(accessed on January 3, 2017)
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VGI: input for research and mapping
VGI: impact on science VGI: input for scientific research Citizen science part of scientific disciplines VGI: fulfil quality requirements for scientific research (?) Volunteers gathering mapping data
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Quality of VGI Quality of VGI not perfect
Information quality standards not really considered Quality control in VGI Metadata standards not used in VGI
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Reasons for collecting VGI
Eight reasons after Loo Arancibia (2011): Altruism Professional or personal interest Intellectual stimulation Protection or improving personal investments Social reward Better own reputation Being creative Pride of place
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VGI: hot topic in GIscience, Geoinformatics and GeoIT
Amount of literature on VGI increased 90 percent of data collected in the last 2 years Most VGI activities done in the last five years
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Indoor Positioning: Definition and Introduction
Indoor Positioning: “system that continuously and in real-time can determine the position of something or someone in a physical space such as in a hospital, a gymnasium, a school, etc. (Gu et al. 2009)” IPS: „aim to provide location estimates for wireless devices such as laptop computers, handheld devices, and electronic badges (Madigan et al )“ Indoor positioning more complex than outdoor positioning Positioning: “determination of a position of an object or a person (Mautz 2012)“
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Topologies of IPS Four topologies: Remote Positioning System
Self – Positioning Indirect Remote Positioning Indirect Self - Positioning
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Classifications of IPS
Classification based on wireless network infrastructure Network – based IPS non – network – based IPS Classification based on architecture Self positioning systems Infrastructure Positioning System Infrastructure-assisted and self-oriented systems
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Components of IPS
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Performance of IPS
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Introduction to positioning methods
Cell of Origin Centroid Determination Polar Point Method Dead Reckogning
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Introduction to IPS technologies
Active Badge location system Active Bat SpotOn ad hoc location system Cricket location support system
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IPS: hot topic in GIscience, Geoinformatics and GeoIT
90 percent of time spent indoors Growing importance of position based services Many application areas today
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Literature (1) Coleman, D. J., et al. (2009). "Volunteered Geographic Information: The Nature and Motivation of Produsers." International Journal of Spatial Data Infrastructures Research 4: Coutalides, R. (2015). Innenraumklima. Wege zu gesunden Bauten. Thun, Werd & Weber Verlag AG. Elwood, S., et al. (2012). "Researching Volunteered Geographic Information: Spatial Data, Geographic Research and New Social Practice." Annals of the Association of American Geographers. 102: Feldmann, S., et al. (2003). An indoor Bluetooth-based positioning system: concept, implementation and experimental evaluation. Proceedings of the International Conference on Wireless Networks ICWN '03. Las Vegas: 5. Flanagin, A. J. and M. J. Metzger (2008). "The credibility of volunteered geographic information." GeoJournal 72: Goodchild, M. F. (2007). "Citizen as sensors: the world of volunteered geography." GeoJournal 69: Gu, Y., et al. (2009). "A Survey of Indoor Positioning Systems for Wireless Personal Networks." IEEE Communications Surveys & Tutorials 11.1: Kaemarungsi, K. (2005). Design of indoor positioning systems based on location fingerprinting technique, University of Pittsburgh: 178.
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Literature (2) Liu, H., et al. (2007). "Survey of Wireless Indoor Positioning Techniques and Systems." IEEE Transactions on Systems, Man, and Cybernetics - Part C: Applications and Reviews 37.6: Loo Arancibia, S. C. (2011). Volunteered Geographic Information. A Conceptual Model and Analysis of Volunteered Data. Centre for Geo-Information. Wageningen, Wageningen University: 57. Madigan, D., et al. (2005). Bayesian Indoor Positioning Systems IEEE 24th Annual Joint Conference of the IEEE Computer and Communications Societes. Mautz, R. (2009). "Overview of current indoor positioning systems." Geodesy and Cartography 35(1): Mautz, R. (2012). Indoor Positioning Technologies. Institute of Geodesy and Photogrammetry, Department of Civil, Environmental and Geomatic Engineering, ETH Zurich: 127. Schiller, J. and A. Voisard (2004). Location-based services. San Francisco, Elsevier. Sui, D., et al. (2012). Crowdsourcing Geographic Knowledge: Volunteered Geographic Information (VGI) in Theory and Practice. DOI / _1
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