René Westerholt, M.Sc.
I am a geo-information scientist at the GIScience group of the Institute of Geography, where I am teaching spatial analysis and GIS courses and am conducting research on spatial analysis methodologies. My background is geoinformatics, in which I graduated with an MSc degree from the Department of Mathematics and Computer Science at Osnabrück University. Currently, I am conducting a PhD project on the spatial analysis of social media and related data, which includes the participation in a DFG priority programme on volunteered geographic information. My practical experience includes working with the Botanical Garden of Osnabrück University, where I have been working as a software developer for several years in nature conservation projects. Further, I conducted several independent software projects with different external partners. I am professional member of the OGC, the Association for Geoinformatics, GeoIT and Navigation, and a fellow of the Royal Geographical Society in London.
- the application of spatial statistics to AGI data,
- spatial analysis methodologies (e.g., Moran’s I, G-statistics),
- the role of spatial heteroscedasticity and spatial variance in AGI data,
- the conflation of spatial and platial analysis.
|Since 2013:||Research Assistant, GIScience Research Group, Institute of Geography, Faculty of Chemistry and Earth Sciences, Heidelberg University (Germany).|
|Visiting Scholar, Center for Geographic Analysis, Institute for Quantiative Social Science, Harvard University, Cambridge, MA (USA).|
|2011-2012:||Research Assistant, Steinbeis Centre for Applied Geoinformatics and Environmental Research, Osnabrück (Germany).|
|2011-2017:||Software Developer (mobile and web-based GIS applications), Botanical Garden, Osnabrück University (Germany).|
|2010-2011:||Software Developer (web-based routing application), Martin Luther University of Halle-Wittenberg (Germany).|
|Since 2013:||PhD Student, GIScience Research Group, Institute of Geography, Faculty of Chemistry and Earth Sciences, Heidelberg University (Germany).|
|2010-2012:||Graduate Studies of Geoinformatics (M.Sc.), Institute for Geoinformatics and Remote Sensing, Department of Mathematics and Computer Science, Osnabrück University (Germany).|
|2007-2010:||Undergraduate Studies of Geoinformatics (B.Sc.), Institute for Geoinformatics and Remote Sensing, Department of Mathematics and Computer Science, Osnabrück University (Germany).|
Awards and Honours
|03/2014:||Young Researchers Award 2013, North-German Society for Geoinformatics|
|10/2013:||International Mobility Grant Funding, German Universities Excellence Initiative II|
|01/2013:||PhD Scholarship, State of Baden-Württemberg|
Peer-reviewed Journal Articles
Westerholt, R., Resch, B., Mocnik, F.-B., and Hoffmeister, D. (2018): A statistical test on the local effects of spatially structured variance. International Journal of Geographical Information Science, 32 (3), 571 - 600. DOI: 10.1080/13658816.2017.1402914.
Bluemke, M., Resch, B., Lechner, C., Westerholt, R. and Kolb, JP. (2017): Integrating Geographic Information into Survey Research: Current Applications, Challenges and Future Avenues. Survey Research Methods, 11 (3), 307-327. DOI: 10.18148/srm/2017.v11i3.6733.
Borgmann, P., Westerholt, R., Oevermann, S. and Zachgo, S. (2017): Webbasierte und mobile Datenerfassung im Projekt "Netzwerk zum Schutz gefährdeter Wildpflanzen in Deutschland (WIPs-De)". Natur und Landschaft, 92 (2), 69 - 75. DOI: 10.17433/2.2017.50153439.69-75.
Li, M., Westerholt, R., Fan, H. and Zipf, A. (2016): Assessing spatiotemporal predictability of LBSN: A case study of three Foursquare datasets. GeoInformatica, volume and issue pending. DOI: 10.1007/s10707-016-0279-5.
Westerholt, R., Steiger, E., Resch, B. and Zipf, A. (2016): Abundant Topological Outliers in Social Media Data and Their Effect on Spatial Analysis. PLOS ONE, 11 (9), e0162360. DOI: 10.1371/journal.pone.0162360.
Steiger, E., Westerholt, R., Resch, B. and Zipf, A. (2015): Twitter as an indicator for whereabouts of people? Correlating Twitter with UK census data. Computers, Environment and Urban Systems, 54, 255 - 265. DOI: 10.1016/j.compenvurbsys.2015.09.007.
Westerholt, R., Resch, B. and Zipf, A. (2015): A local scale-sensitive indicator of spatial autocorrelation for assessing high- and low-value clusters in multi-scale datasets. International Journal of Geographical Information Science, 29 (5), 868-887. DOI: 10.1080/13658816.2014.1002499.
You can find a preprint ("as accepted") here.
Westerholt, R. and Resch, B. (2014): Asynchronous Geospatial Processing: An Event-Driven Push-Based Architecture for the OGC Web Processing Service. Transactions in GIS, 19 (3), 455-479. DOI: 10.1111/tgis.12104.
Westerholt, R. (2018): The impact of the spatial superimposition of point based statistical configurations on assessing spatial autocorrelation. AGILE Conference 2018, Lund, Sweden, accepted.
Westerholt, R. (2017): Topological and scale-related issues in Twitter analyses through superimposed forms of spatial heterogeneity. Annual Meeting of the American Association of Geographers 2017, Boston, MA.
Borgmann, P. and Westerholt, R. (2015): Citizen Science im Botanischen Artenschutz. Dialogforum Citizen Science, German Federal Environmental Foundation, Osnabrück, Germany.
Reimer, A. and Westerholt, R. (2014): Schematization for the analysis of geolocated microblog messages. In: Proceedings of AutoCarto 2014, International Symposium on Automated Cartography, Pittsburgh, PA.
Westerholt, R., Borgmann, P. and Zimmer, B. (2012): WebMapping-basierte Erfassung pﬂanzengenetischer Ressourcen in der Botanik. In: Löwner, M.-O., Hillen, F. and Wohlfahrt, R. (eds.): Geoinformatik 2012 „Mobilität und Umwelt“. Aachen: Shaker-Verlag, 411 - 414.
Borgmann, P., Westerholt, R., Zimmer, B. and Zachgo, S. (2012): Einsatz eines Geoportals in der Saatguterfassung. In: Lohwasser, U., Zachgo, S. und Börner, A. (ed.): Saatguterhaltung und Nutzbarmachung von Kulturpﬂanzen und heimischen Wildarten. Nürtingen: Gesellschaft für Pﬂanzenbauwissenschaften e.V., Berichte der Gesellschaft für Pﬂanzenbauwissenschaften, volume 6, 17 - 19.
Steiger, E., Westerholt, R. and Zipf, A. (2016): Research on social media feeds – A GIScience perspective. In: Capineri, C, Haklay, M, Huang, H, Antoniou, V, Kettunen, J, Ostermann, F and Purves, R. (eds.): European Handbook of Crowdsourced Geographic Information, London: Ubiquity Press, 237-254. DOI: 10.5334/bax.r.
Borgmann, P., Westerholt, R., Oevermann, S. and Zachgo, S. (2014): WEL-Webmapping. In: Poschlod, P., Borgmann, P., Listl, D., Reisch, C. and Zachgo, S. (eds.): Handbuch Genbank WEL. Regensburg: HOPPEA Denkschriften der Regensburgischen Botanischen Gesellschaft, 133 - 140.
|2018:||Urban Spatial Heterogeneity – Nuisance, or Source of Information?, WISC Seminar Series, Warwick Institute for the Science of Cities, University of Warwick, Coventry, UK|
|2017:||Topological and scale-related issues in Twitter analyses through superimposed forms of spatial heterogeneity, Annual Meeting of the American Association of Geographers, Hynes Convention Center, Boston, MA, USA|
|2017:||Methodological challenges in the spatial analysis of georeferenced social media data, ABCD GIS Series, Center for Geographic Analysis, Harvard University, Cambridge, MA, USA|
|2016:||Mining the “big noise:“ Challenges and opportunities of social media analysis, Mapping, Sensing, and Crowdsourcing Geographic Information, Royal Geographical Society, London, UK|
|2016:||Spatial Analysis of Twitter Data, WISC Seminar Series, Warwick Institute for the Science of Cities, University of Warwick, Coventry, UK|
|2016:||The mapping portal of the GE_Sell project, Coordination Meeting GE_Sell, Federal Agency for Agriculture and Food, Bonn, Germany|
|2015:||Mixed-Scale Spatial Autocorrelation, Forum GI, Institute for Geoinformatics and Remote Sensing, Osnabrück University, Germany|
|2015:||Sampling and management of species in the national responsibility of Germany within the WIPs-De project, Dialogforum Citizen Science, German Federal Environmental Foundation, Osnabrück, Germany|
|2014:||Peeling the onion – multiple geographic scale levels within tweets, CrowdAnalyser Workshop 2014, Heidelberg Collaboratory for Image Processing, Heidelberg, Germany|
|2013:||Multi-Scale Event Detection on Twitter Tweets, Geography Colloquium, Center for Geographic Analysis, Harvard University, Cambridge, MA, USA|
|2012:||Using a geoportal in seed collection, Joint Congress of the Consortia for Seeds and Plant Breeding, Society for Plant Breeding, Osnabrück, Germany|
|2017:||Workshop: Spatial urban analytics and crowdsourced geographic information for smarter cities (convenor and session chair), Annual International Conference, Royal Geographical Society, London, UK|
|2015:||Workshop: CrowdAnalyser 2015 (co-organiser), Institute of Geography, Heidelberg University, Germany|
|2014:||Workshop: CrowdAnalyser 2014 (co-organiser), Heidelberg Collaboratory for Image Processing, Heidelberg University, Germany|
|2017:||Special Issue on Crowdsourcing for Urban Geoinformatics (guest editor), Geo-spatial Information Science, Taylor & Francis|
|WS 2017/18:||Masterclass on "Spatial Analysis" (Invited Compact Course, University of Warwick, UK)|
|WS 2017/18:||Introduction to the spatial analysis of human-geographic data (Lecture)|
|SS 2017:||Introduction to computer science for geographers (Seminar + Lab)|
|SS 2017:||Introduction to GIS (Lab; conception and supervision of tutors)|
|WS 2016/17:||Introduction to the spatial analysis of human-geographic data (Lecture)|
|WS 2016/17:||Spatiostatistical exploration of human-geographic data (Lab)|
|SS 2016:||Fundamentals of computer science for geographers (Seminar + Lab)|
|SS 2016:||Introduction to GIS (Lab; conception and supervision of tutors)|
|WS 2015/16:||Spatial associations in human geography (Lecture)|
- Geo-Spatial Information Science, Taylor & Francis
- International Journal of Digital Earth, Taylor & Francis
- Knowledge and Information Systems, Springer
- Transactions in GIS, John Wiley & Sons
- Royal Geographical Society, Fellow
- Association for Geoinformatics, GeoIT and Navigation, Member
- OGC, Member
The results of an analysis of migration data and of the Brexit referendum votes are among only four selected finalists of this year’s data challenge associated with the GISRUK conference. The research was conducted by a team advised by Professor João Porto de Albququerque (University of Warwick) including our colleague René Westerholt. The idea of [...]
Our colleague René Westerholt was recently invited to deliver a Masterclass on ‘Spatial Analysis’ at the University of Warwick (UK) on Tuesday, 6th of March. The one-day-event was hosted by the Q-Step Centre, an initiative to strengthen quantiative skills of students enrolled at the Social Science Faculty. The workshop was attended by students from various [...]
One of our recent publications (Bluemke, Resch, Lechner, Westerholt and Kolb 2017) was elected the “top publication 2017″ for the research field of “research data management” at the Leibniz Institute for the Social Sciences (GESIS). The paper discusses methodological challenges common to both survey research and GIScience, and is expected to serve as the starting [...]