Aug 2026· The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences· 0 citations· 4 references
Abstract
Abstract. OpenStreetMap (OSM) is a prominent platform for Volunteered Geographic Information (VGI), wherein geographic data are updated daily by a global community of contributors. The OpenStreetMap Changeset Analyzer (OSMCha) serves as a quality assurance tool that automatically flags suspicious edits based on detection rules covering geometric and tag plausibility, edit scale, and contributor behavioral patterns. In this study, we developed Python scripts to systematically collect 740,038 changesets spanning four years (2022–2025) for Japan via the OSMCha API, consolidizing them into a FlatGeobuf database with 60 reason_id mappings embedded as attributes and prefecture-level spatial joins applied. Our analysis revealed a 63.3% increase in annual changesets and a 72.5% expansion in unique contributors, alongside an 11.9- percentage-point decline in the suspicious edit rate. Mobile editors and survey-based edits grew rapidly, consistently demonstrating lower suspicion rates than non-survey edits. A structural shift in the OSMCha detection logic was empirically identified in 2024. The KDE analysis confirmed editing hotspots in three major metropolitan areas, while the January 2024 Noto Peninsula earthquake triggered concentrated crisis mapping, engaging 1,536 contributors.
A case study is model by using the OSM history files, contributor profile pages, and the geographies of contributor interest to construct “the story of OpenStreetMap” in the small agricultural town of Othello, Washington, USA, and evaluating the map’s completeness by performing a walking survey of Othello’s commercial...
Sterling D. Quinn· The International Archives o...· 0 citations
Knowledge graphs have become a key resource for integrating heterogeneous data and powering downstream tasks such as question answering, entity linking, and semantic search. They are built and maintained incrementally, either (i) fully automated, e.g., YAGO, (ii) semiautomatically with community oversight, e.g., DBpedi...
C. Cortes, Lisa Ehrlinger, Lorena Etcheverry et al.· 0 citations
Electronic Navigational Charts (ENCs) are geospatial vector datasets used in maritime navigation systems that represent hydrographic and navigational information such as depths, navigational aids, traffic schemes, and hazards. A major challenge for hydrographic offices is determining whether a given chart change poses...
Jacob Arndt, A. Potnis, Alexandre Sorokine· 0 citations
No documented, reproducible open-source workflow exists for converting CityGML data from a 3D City Database (3DCityDB) instance into functional Indexed 3D Scene Layer (I3S) Scene Layer Packages (SLPK). This study addresses that gap through systematic empirical evaluation of two conversion architectures tested across fo...
Chukwuma Ugwu, Zhi-Hang Yao· The International Archives o...· 0 citations
The scientific relevance of geological sites can be reflected in the intensity and diversity of research conducted there and in the publications that document those places. For geoconservation, however, this literature signal is useful only when the underlying localities can be identified, mapped, and checked against s...
João Pedro Faria, Cecília Castro, J. Brilha et al.· Geoheritage· 0 citations
Keeping maps of invasive plants (IP) updated is challenging because of the fast expansion they can undergone in the short term. Traditional mapping methods (i.e., systematic sampling) are resource-intensive and often unaffordable at large scales. Citizen science tools (e.g., iNaturalist) are emerging as complementary s...
P. Castro-Díez, Julia Clemente, Diego Fernández-Moreno et al.· ARPHA Conference Abstracts· 0 citations
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