{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T16:10:48Z","timestamp":1760199048725,"version":"build-2065373602"},"reference-count":18,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2018,12,11]],"date-time":"2018-12-11T00:00:00Z","timestamp":1544486400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJGI"],"abstract":"<jats:p>This editorial introduces the special issue entitled \u201cGeoinformatics in Citizen Science\u201d of the ISPRS International Journal of Geo-Information. The issue includes papers dealing with three main topics. (1) Key tasks of citizen science (CS) in leveraging geoinformatics. This comprises descriptions of citizen science initiatives where geoinformation management and processing is the key means for discovering new knowledge, and it includes: (i) \u201chackAIR: Towards Raising Awareness about Air Quality in Europe by Developing a Collective Online Platform\u201d by Kosmidis et al., (ii) \u201cCoupling Traditional Monitoring and Citizen Science to Disentangle the Invasion of Halyomorpha halys\u201d by Malek et al., and (iii) \u201cIncreasing the Accuracy of Crowdsourced Information on Land Cover via a Voting Procedure Weighted by Information Inferred from the Contributed Data\u201d by Foody et al. (2) Evaluations of approaches to handle geoinformation in CS. This examines citizen science initiatives which critically analyze approaches to acquire and handle geoinformation, and it includes: (iv) \u201cCS Projects Involving Geoinformatics: A Survey of Implementation Approaches\u201d by Criscuolo et al., (v) \u201cObstacles and Opportunities of Using a Mobile App for Marine Mammal Research\u201d by Hann et al., (vi) \u201cOSM Data Import as an Outreach Tool to Trigger Community Growth? A Case Study in Miami\u201d by Juh\u00e1sz and Hochmair, and (vii) \u201cExperiences with Citizen-Sourced VGI in Challenging Circumstances\u201c by Hameed et al. (3) Novel geoinformatics research issues: (viii) \u201cA New Method for the Assessment of Spatial Accuracy and Completeness of OpenStreetMap Building Footprints\u201d by Brovelli and Zamboni, (ix) \u201cA Citizen Science Approach for Collecting Toponyms\u201d by Perdana and Ostermann, and (x) \u201cAn Automatic User Grouping Model for a Group Recommender System in Location-Based Social Networks\u201d by Khazaei and Alimohammadi.<\/jats:p>","DOI":"10.3390\/ijgi7120474","type":"journal-article","created":{"date-parts":[[2018,12,12]],"date-time":"2018-12-12T03:27:49Z","timestamp":1544585269000},"page":"474","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Geoinformatics in Citizen Science"],"prefix":"10.3390","volume":"7","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6775-753X","authenticated-orcid":false,"given":"Gloria","family":"Bordogna","sequence":"first","affiliation":[{"name":"CNR\u2014IREA, via A. Corti 12, 20133 Milano, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2018,12,11]]},"reference":[{"key":"ref_1","unstructured":"Goodchild, M., Aubrecht, C., and Bhaduri, B. (2016). Special Issue Role of Volunteered Geographic Information in Advancing Science. Trans. GIS, Available online: http:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/tgis.12242\/full."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Bordogna, G., and Carrara, P. (2018). Mobile Information Systems Leveraging Volunteered Geographic Information for Earth Observation, Springer.","DOI":"10.1007\/978-3-319-70878-2"},{"key":"ref_3","unstructured":"Mooney, P., Zipf, A., Jokar, J., and Hochmair, H.H. (2017, July 04). AGILE Workshop on VGI-Analytics. Available online: http:\/\/www.cs.nuim.ie\/~pmooney\/VGI-Analytics2017\/."},{"key":"ref_4","unstructured":"Mooney, P., Zipf, A., Jokar, J., and Hochmair, H.H. (2017, July 04). Special issue on Volunteered Geographic Information (VGI)-Analytics. Available online: http:\/\/explore.tandfonline.com\/cfp\/est\/gsis\/si3."},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Pfoser, D., and Voisard, A. (2014). GEOCROWD Workshop Report: The Second Int\u2019l Workshop on Crowdsourced and Volunteered Geographic Information 2013: (Orlando, FL\u2014Nov. 5, 2013), ACM. SIGSPATIAL Special.","DOI":"10.1145\/2684380.2684384"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"955","DOI":"10.3390\/ijgi2040955","article-title":"Special Issue Collaborative Mapping","volume":"2","author":"See","year":"2013","journal-title":"ISPRS Int. J. Geo-Inf."},{"key":"ref_7","unstructured":"Zipf, A., Jonietz, D., Antoniou, V., and See, L. (2017). Special Issue Volunteered Geographic Information. ISPRS Int. J. Geo-Inf., Available online: http:\/\/www.mdpi.com\/journal\/ijgi\/special_issues\/VGI."},{"key":"ref_8","unstructured":"Zipf, A., and Resch, B. (2015). Special Issue on GeoWeb 2.0. ISPRS Int. J. Geo-Inf., Available online: http:\/\/www.mdpi.com\/journal\/ijgi\/special_issues\/geoweb-2.0."},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Criscuolo, L., Bordogna, G., Carrara, P., and Pepe, M. (2018). CS Projects Involving Geoinformatics: A Survey of Implementation Approaches. ISPRS Int. J. Geo-Inf., 7.","DOI":"10.3390\/ijgi7080312"},{"key":"ref_10","doi-asserted-by":"crossref","unstructured":"Brovelli, M.A., and Zamboni, G. (2018). A New Method for the Assessment of Spatial Accuracy and Completeness of OpenStreetMap Building Footprints. ISPRS Int. J. Geo-Inf., 7.","DOI":"10.3390\/ijgi7080289"},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Perdana, A.P., and Ostermann, F.O. (2018). A Citizen Science Approach for Collecting Toponyms. ISPRS Int. J. Geo-Inf., 7.","DOI":"10.3390\/ijgi7060222"},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"Kosmidis, E., Syropoulou, P., Tekes, S., Schneider, P., Spyromitros-Xioufis, E., Riga, M., Charitidis, P., Moumtzidou, A., Papadopoulos, S., and Vrochidis, S. (2018). hackAIR: Towards Raising Awareness about Air Quality in Europe by Developing a Collective Online Platform. ISPRS Int. J. Geo-Inf., 7.","DOI":"10.3390\/ijgi7050187"},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Malek, R., Tattoni, C., Ciolli, M., Corradini, S., Andreis, D., Ibrahim, A., Mazzoni, V., Eriksson, A., and Anfora, G. (2018). Coupling Traditional Monitoring and Citizen Science to Disentangle the Invasion of Halyomorpha halys. ISPRS Int. J. Geo-Inf., 7.","DOI":"10.3390\/ijgi7050171"},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Hann, C.H., Stelle, L.L., Szabo, A., and Torres, L.G. (2018). Obstacles and Opportunities of Using a Mobile App for Marine Mammal Research. ISPRS Int. J. Geo-Inf., 7.","DOI":"10.3390\/ijgi7050169"},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Juh\u00e1sz, L., and Hochmair, H.H. (2018). OSM Data Import as an Outreach Tool to Trigger Community Growth? A Case Study in Miami. ISPRS Int. J. Geo-Inf., 7.","DOI":"10.3390\/ijgi7030113"},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Foody, G., See, L., Fritz, S., Moorthy, I., Perger, C., Schill, C., and Boyd, D. (2018). Increasing the Accuracy of Crowdsourced Information on Land Cover via a Voting Procedure Weighted by Information Inferred from the Contributed Data. ISPRS Int. J. Geo-Inf., 7.","DOI":"10.3390\/ijgi7030080"},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"Khazaei, E., and Alimohammadi, A. (2018). An Automatic User Grouping Model for a Group Recommender System in Location-Based Social Networks. ISPRS Int. J. Geo-Inf., 7.","DOI":"10.3390\/ijgi7020067"},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Hameed, M., Fairbairn, D., and Speak, S. (2017). Experiences with Citizen-Sourced VGI in Challenging Circumstances. ISPRS Int. J. 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