{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:13:29Z","timestamp":1760242409602,"version":"build-2065373602"},"reference-count":47,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2017,6,26]],"date-time":"2017-06-26T00:00:00Z","timestamp":1498435200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002790","name":"Canadian Network for Research and Innovation in Machining Technology, Natural Sciences and Engineering Research Council of Canada","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100002790","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJGI"],"abstract":"<jats:p>The Internet is increasingly a source of data for geographic information systems, as more data becomes linked, available through application programing interfaces (APIs), and more tools become available for handling unstructured web data. While many web data extraction and structuring methods exist, there are few examples of comprehensive data processing and analysis systems that link together these tools for geographic analyses. This paper develops a general approach to the development of spatial information context from unstructured and informal web data sources through the joint analysis of the data\u2019s thematic, spatial, and temporal properties. We explore the utility of this derived contextual information through a case study into maritime surveillance. Extraction and processing techniques such as toponym extraction, disambiguation, and temporal information extraction methods are used to construct a semi-structured maritime context database supporting global scale analysis. Geographic, temporal, and thematic content were analyzed, extracted and processed from a list of information sources. A geoweb interface is developed to allow user visualization of extracted information, as well as to support space-time database queries. Joint keyword clustering and spatial clustering methods are used to demonstrate extraction of documents that relate to real world events in official vessel information data. The quality of contextual geospatial information sources is evaluated in reference to known maritime anomalies obtained from authoritative sources. The feasibility of automated context extraction using the proposed framework and linkage to external data using standard clustering tools is demonstrated.<\/jats:p>","DOI":"10.3390\/ijgi6070193","type":"journal-article","created":{"date-parts":[[2017,6,27]],"date-time":"2017-06-27T02:58:05Z","timestamp":1498532285000},"page":"193","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Spatial Context from Open and Online Processing (SCOOP): Geographic, Temporal, and Thematic Analysis of Online Information Sources"],"prefix":"10.3390","volume":"6","author":[{"given":"Colin","family":"Robertson","sequence":"first","affiliation":[{"name":"Department of Geography and Environmental Studies, Wilfrid Laurier University, Waterloo, ON N2L 3C5, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kevin","family":"Horrocks","sequence":"additional","affiliation":[{"name":"Department of Geography and Environmental Studies, Wilfrid Laurier University, Waterloo, ON N2L 3C5, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2017,6,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Warf, B., and Arias, S. (2008). The Spatial Turn: Interdisciplinary Perspectives, Taylor & Francis.","DOI":"10.4324\/9780203891308"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"769","DOI":"10.1126\/science.1126902","article-title":"Creating a Science of the Web","volume":"313","author":"Hall","year":"2006","journal-title":"Science"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"87","DOI":"10.1109\/MIS.2009.102","article-title":"The Emerging Web of Linked Data","volume":"24","author":"Bizer","year":"2009","journal-title":"IEEE Intell. Syst."},{"key":"ref_4","unstructured":"Kozinets, R.V. (2010). Netnography: Doing Ethnographic Research Online, SAGE Publications."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"191","DOI":"10.1111\/tgis.12182","article-title":"Towards an Automated Comparison of OpenStreetMap with Authoritative Road Datasets","volume":"21","author":"Brovelli","year":"2017","journal-title":"Trans. GIS"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"682","DOI":"10.1068\/b35097","article-title":"How good is volunteered geographical information? A comparative study of OpenStreetMap and Ordnance Survey datasets","volume":"37","author":"Haklay","year":"2010","journal-title":"Environ. Plan. B Plan. Des."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"280","DOI":"10.1177\/2043820613513392","article-title":"The quality of big (geo)data","volume":"3","author":"Goodchild","year":"2013","journal-title":"Dialog. Human Geogr."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"61","DOI":"10.1080\/15230406.2013.777139","article-title":"Spatial, temporal, and socioeconomic patterns in the use of Twitter and Flickr","volume":"40","author":"Li","year":"2013","journal-title":"Cartogr. Geogr. Inf. Sci."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"260","DOI":"10.1080\/15230406.2014.890072","article-title":"Geo-located Twitter as proxy for global mobility patterns","volume":"41","author":"Hawelka","year":"2014","journal-title":"Cartogr. Geogr. Inf. Sci."},{"key":"ref_10","doi-asserted-by":"crossref","unstructured":"Quercia, D., Ellis, J., Capra, L., and Crowcroft, J. (2012, January 11\u201315). Tracking \u201cGross Community Happiness\u201d from Tweets. Proceedings of the ACM 2012 Conference on Computer Supported Cooperative Work, New York, NY, USA.","DOI":"10.1145\/2145204.2145347"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"215","DOI":"10.1007\/s10708-008-9181-5","article-title":"Discovering points of interest from users\u2019 map annotations","volume":"72","author":"Mummidi","year":"2008","journal-title":"GeoJournal"},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"M\u00fclligann, C., Janowicz, K., Ye, M., and Lee, W.-C. (2011). Analyzing the Spatial-Semantic Interaction of Points of Interest in Volunteered Geographic Information. Spatial Information Theory, Springer.","DOI":"10.1007\/978-3-642-23196-4_19"},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"MacEachren, A., Jaiswal, A., Robinson, A., Pezanowski, S., Savelyev, A., Mitra, P., and Blanford, J. (2011, January 23\u201328). SensePlace2: GeoTwitter analytics support for situational awareness. Proceedings of the 2011 IEEE Conference on Visual Analytics Science and Technology (VAST), Providence, RI, USA.","DOI":"10.1109\/VAST.2011.6102456"},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Kennedy, L., Naaman, M., Ahern, S., Nair, R., and Rattenbury, T. (2007, January 23\u201328). How flickr helps us make sense of the world: Context and content in community-contributed media collections. Proceedings of the 15th International Conference on Multimedia, Augsburg, Germany.","DOI":"10.1145\/1291233.1291384"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"1:1","DOI":"10.1145\/1462148.1462149","article-title":"Methods for extracting place semantics from Flickr tags","volume":"3","author":"Rattenbury","year":"2009","journal-title":"ACM Trans. Web"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"96","DOI":"10.1016\/j.compenvurbsys.2013.11.006","article-title":"A multi-scale approach to exploring urban places in geotagged photographs","volume":"53","author":"Feick","year":"2014","journal-title":"Comput. Environ. Urban Syst."},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"Noulas, A., Mascolo, C., and Frias-Martinez, E. (2013, January 3\u20136). Exploiting Foursquare and Cellular Data to Infer User Activity in Urban Environments. Proceedings of the 2013 IEEE 14th International Conference on Mobile Data Management, Milan, Italy.","DOI":"10.1109\/MDM.2013.27"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"219","DOI":"10.1080\/13658810701626343","article-title":"Geographical information retrieval","volume":"22","author":"Jones","year":"2008","journal-title":"Int. J. Geogr. Inf. Sci."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"717","DOI":"10.1080\/13658810601169840","article-title":"The design and implementation of SPIRIT: A spatially aware search engine for information retrieval on the Internet","volume":"21","author":"Purves","year":"2007","journal-title":"Int. J. Geogr. Inf. Sci."},{"key":"ref_20","unstructured":"Derungs, C., Palacio, D., and Purves, R.S. (2012, January 18\u201321). Resolving fine granularity toponyms: Evaluation of a disambiguation approach. Proceedings of the 7th International Conference on Geographic Information Science (GIScience), Columbus, OH, USA."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"2483","DOI":"10.1080\/13658816.2013.825724","article-title":"Geosocial gauge: A system prototype for knowledge discovery from social media","volume":"27","author":"Croitoru","year":"2013","journal-title":"Int. J. Geogr. Inf. Sci."},{"key":"ref_22","first-page":"17","article-title":"Geosocial intelligence","volume":"33","author":"Holderness","year":"2014","journal-title":"SMART Infrastruct. Facil. Pap."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"319","DOI":"10.1007\/s10708-011-9438-2","article-title":"Harvesting ambient geospatial information from social media feeds","volume":"78","author":"Stefanidis","year":"2013","journal-title":"GeoJournal"},{"key":"ref_24","unstructured":"De Albuquerque, J.P., Fan, H., and Zipf, A. (2016, January 14\u201317). A conceptual model for quality assessment of VGI for the purpose of flood management. Proceedings of the 19th AGILE Conference on Geographic Information Science, Helsinki, Finland."},{"key":"ref_25","doi-asserted-by":"crossref","unstructured":"Yzaguirre, A., Smit, M., and Warren, R. (2015;, January 5\u20139). Newspaper archives + text mining = rich sources of historical geo-spatial data. Proceedings of the IOP Conference Series: Earth and Environmental Science, Halifax, NS, Canada.","DOI":"10.1088\/1755-1315\/34\/1\/012043"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"130","DOI":"10.1080\/15230406.2013.777137","article-title":"Beyond the geotag: Situating \u201cbig data\u201d and leveraging the potential of the geoweb","volume":"40","author":"Crampton","year":"2013","journal-title":"Cartogr. Geogr. Inf. Sci."},{"key":"ref_27","unstructured":"Wagner, M.M., Moore, A.W., and Aryel, R.M. (2006). Handbook of Biosurveillance, Elsevier."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"105","DOI":"10.1016\/j.sste.2009.12.001","article-title":"Review of methods for space-time disease surveillance","volume":"1","author":"Robertson","year":"2010","journal-title":"Spat. Spatio-Temporal Epidemiol."},{"key":"ref_29","doi-asserted-by":"crossref","unstructured":"Brownstein, J.S., Freifeld, C.C., Reis, B.Y., and Mandl, K.D. (2008). Surveillance Sans Fronti\u00e8res: Internet-Based Emerging Infectious Disease Intelligence and the HealthMap Project. PLoS Med., 5.","DOI":"10.1371\/journal.pmed.0050151"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"150","DOI":"10.1197\/jamia.M2544","article-title":"HealthMap: Global infectious disease monitoring through automated classification and visualization of Internet media reports","volume":"15","author":"Freifeld","year":"2008","journal-title":"J. Am. Med. Inf. Assoc."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"70","DOI":"10.1016\/j.inffus.2008.05.006","article-title":"Designing ontologies for higher level fusion","volume":"10","author":"Little","year":"2009","journal-title":"Inf. Fusion"},{"key":"ref_32","first-page":"80","article-title":"Contextual Knowledge and Information Fusion for Maritime Piracy Surveillance","volume":"Volume 109","author":"Garcia","year":"2013","journal-title":"NATO Advanced Study Institute (ASI) on Prediction and Recognition of Piracy Efforts Using Collaborative Human-Centric Information Systems"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"449","DOI":"10.1007\/s10708-014-9602-6","article-title":"Data-driven geography","volume":"80","author":"Miller","year":"2015","journal-title":"GeoJournal"},{"key":"ref_34","first-page":"1","article-title":"The inherent structure of information as a constraint to analysis: Mapped thematic data as a case study","volume":"6","author":"Sinton","year":"1978","journal-title":"Harv. Pap. Geogr. Inf. Syst."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"441","DOI":"10.1111\/j.1467-8306.1994.tb01869.x","article-title":"It\u2019s about time: A conceptual framework for the representation of temporal dynamics in geographic information systems","volume":"84","author":"Peuquet","year":"1994","journal-title":"Ann. Assoc. Am. Geogr."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"501","DOI":"10.1080\/136588100415710","article-title":"A conceptual framework for incorporating cognitive principles into geographical database representation","volume":"14","author":"Mennis","year":"2000","journal-title":"Int. J. Geogr. Inf. Sci."},{"key":"ref_37","unstructured":"United Nations Conference on Trade and Development (UNCTAD) (2011). Review of Maritime Transport, United Nations."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"5719","DOI":"10.1016\/j.eswa.2013.04.029","article-title":"Open data for anomaly detection in maritime surveillance","volume":"40","author":"Kazemi","year":"2013","journal-title":"Expert Syst. Appl."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"45","DOI":"10.1007\/s10796-010-9273-x","article-title":"A microblogging-based approach to terrorism informatics: Exploration and chronicling civilian sentiment and response to terrorism events via Twitter","volume":"13","author":"Cheong","year":"2011","journal-title":"Inf. Syst. Front."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"799","DOI":"10.1002\/sim.4780140809","article-title":"Spatial disease clusters: detection and inference","volume":"14","author":"Kulldorff","year":"1995","journal-title":"Stat. Med."},{"key":"ref_41","doi-asserted-by":"crossref","unstructured":"Kulldorff, M., Heffernan, R., Hartman, J., Assuncao, R.M., and Mostashari, F. (2005). A space-time permutation scan statistic for disease outbreak detection. PLoS Med., 2.","DOI":"10.1371\/journal.pmed.0020059"},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1559\/152304001782173970","article-title":"Research Challenges in Geovisualization","volume":"28","author":"MacEachren","year":"2001","journal-title":"Cartogr. Geogr. Inf. Sci."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"1577","DOI":"10.1080\/13658816.2010.508043","article-title":"Space, time and visual analytics","volume":"24","author":"Andrienko","year":"2010","journal-title":"Int. J. Geogr. Inf. Sci."},{"key":"ref_44","doi-asserted-by":"crossref","unstructured":"Peng, P., Chen, H., Shou, L., Chen, K., Chen, G., and Xu, C. (2015, January 19\u201323). DeepCamera: A Unified Framework for Recognizing Places-of-Interest Based on Deep ConvNets. Proceedings of the 24th ACM International on Conference on Information and Knowledge Management, Melbourne, Australia.","DOI":"10.1145\/2806416.2806620"},{"key":"ref_45","doi-asserted-by":"crossref","unstructured":"Zhu, Y., and Newsam, S. (2015, January 3\u20136). Land Use Classification Using Convolutional Neural Networks Applied to Ground-level Images. Proceedings of the 23rd SIGSPATIAL International Conference on Advances in Geographic Information Systems, Seattle, WA, USA.","DOI":"10.1145\/2820783.2820851"},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"50","DOI":"10.3115\/1119394.1119402","article-title":"A Confidence-based Framework for Disambiguating Geographic Terms","volume":"Volume 1","author":"Rauch","year":"2003","journal-title":"Proceedings of the HLT-NAACL 2003 Workshop on Analysis of Geographic References"},{"key":"ref_47","doi-asserted-by":"crossref","unstructured":"Constantopoulos, P., and S\u00f8lvberg, I.T. (2001). Disambiguating Geographic Names in a Historical Digital Library. Research and Advanced Technology for Digital Libraries, Springer.","DOI":"10.1007\/3-540-44796-2"}],"container-title":["ISPRS International Journal of Geo-Information"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2220-9964\/6\/7\/193\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T18:40:22Z","timestamp":1760208022000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2220-9964\/6\/7\/193"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,6,26]]},"references-count":47,"journal-issue":{"issue":"7","published-online":{"date-parts":[[2017,7]]}},"alternative-id":["ijgi6070193"],"URL":"https:\/\/doi.org\/10.3390\/ijgi6070193","relation":{},"ISSN":["2220-9964"],"issn-type":[{"type":"electronic","value":"2220-9964"}],"subject":[],"published":{"date-parts":[[2017,6,26]]}}}