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Shirly Stephen
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Know, Know Where, KnowWhereGraph: A densely connected, cross-domain knowledge graph and geo-enrichment service stack for applications in environmental intelligence
K Janowicz, P Hitzler, W Li, D Rehberger, M Schildhauer, R Zhu, ...
AI Magazine 43 (1), 30-39, 2022
762022
Swiss canton regions: A model for complex objects in geographic partitions
MP Dube, MJ Egenhofer, JA Lewis, S Stephen, MA Plummer
Spatial Information Theory: 12th International Conference, COSIT 2015, Santa …, 2015
142015
Using a hydro-reference ontology to provide improved computer-interpretable semantics for the groundwater markup language (GWML2)
T Hahmann, S Stephen
International Journal of Geographical Information Science 32 (6), 1138-1171, 2018
132018
An ontological framework for characterizing hydrological flow processes
S Stephen, T Hahmann
13th international conference on spatial information theory (COSIT 2017), 2017
122017
Environmental Observations in Knowledge Graphs
R Zhu, SS Ambrose, L Zhou, C Shimizu, L Cai, G Mai, K Janowicz, ...
82021
Semantically refining the groundwater markup language (GWML2) with the help of a reference ontology
T Hahmann, S Stephen, B Brodaric
International Conference on GIScience Short Paper Proceedings 1 (1), 2016
82016
Providing humanitarian relief support through knowledge graphs
R Zhu, L Cai, G Mai, C Shimizu, CK Fisher, K Janowicz, A Lopez-Carr, ...
Proceedings of the 11th Knowledge Capture Conference, 285-288, 2021
72021
Knowledge explorer: exploring the 12-billion-statement KnowWhereGraph using faceted search (demo paper)
Z Liu, Z Gu, T Thelen, SG Estrecha, R Zhu, CK Fisher, A D'Onofrio, ...
Proceedings of the 30th International Conference on Advances in Geographic …, 2022
62022
A Pattern for Features on a Hierarchical Spatial Grid
C Shimizu, R Zhu, G Mai, C Fisher, L Cai, M Schildhauer, K Janowicz, ...
Proceedings of the 10th International Joint Conference on Knowledge Graphs …, 2021
62021
SOSA-SHACL: shapes constraint for the sensor, observation, sample, and actuator ontology
R Zhu, C Shimizu, S Stephen, L Zhou, L Cai, G Mai, K Janowicz, ...
Proceedings of the 10th International Joint Conference on Knowledge Graphs …, 2021
52021
A Pattern for Representing Scientific Taxonomies.
S Stephen, C Shimizu, M Schildhauer, R Zhu, K Janowicz, P Hitzler
WOP@ ISWC, 2022
42022
Diverse data! Diverse schemata?
K Janowicz, C Shimizu, P Hitzler, G Mai, S Stephen, R Zhu, L Cai, L Zhou, ...
Semantic Web 13 (1), 1-3, 2022
42022
Formal qualitative spatial augmentation of the simple feature access model
S Stephen, T Hahmann
14th International Conference on Spatial Information Theory (COSIT 2019), 2019
42019
Model-Finding for Externally Verifying FOL Ontologies: A Study of Spatial Ontologies.
S Stephen, T Hahmann
FOIS, 233-248, 2020
32020
Geo-Situation for Modeling Causality of Geo-Events in Knowledge Graphs
S Stephen, W Li, T Hahmann
arXiv preprint arXiv:2206.13658, 2022
22022
Domain reference ontologies vs. domain ontologies: What’s the difference
T Hahmann, S Stephen, B Broderic
Lessons from the water domain 10, 2016
22016
Ontological Analysis and Formal Grounding of the Groundwater Markup Language (GWML2) with the Hydro Foundational Ontology (HYFO)
S Stephen
22016
Knowwheregraph-lite: A perspective of the knowwheregraph
C Shimizu, S Stephen, A Christou, K Currier, MS Mahdavinejad, ...
Iberoamerican Knowledge Graphs and Semantic Web Conference, 199-212, 2023
12023
Identifying bottlenecks in practical SAT-based model finding for first-order logic ontologies with datasets
S Stephen, T Hahmann
Proceedings of the AAAI Conference on Artificial Intelligence 33 (01), 10039 …, 2019
12019
Fast Forward from Data to Insight:(Geographic) Knowledge Graphs and Their Applications
K Janowicz, K Currier, C Shimizu, R Zhu, M Shi, CK Fisher, D Rehberger, ...
Handbook of Geospatial Artificial Intelligence, 411-426, 2023
2023
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