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Knowledge explorer: exploring the 12-billion-statement KnowWhereGraph using faceted search (demo paper)

Published: 22 November 2022 Publication History

Abstract

Knowledge graphs are a rapidly growing paradigm and technology stack for integrating large-scale, heterogeneous data in an AI-ready form, i.e., combining data with the formal semantics required to understand it. However, toolchains that support data synthesis and knowledge discovery through information organization, search, filtering, and visualization have been developed at a pace lagging knowledge graph technology. In this paper, we present Knowledge Explorer, an open-source faceted search interface that provides environmentally intelligent services for interactively browsing and navigating KnowWhereGraph. Currently one of the largest open knowledge graphs, KnowWhereGraph contains over 12 billion statements with rich spatial and temporal information from more than 30 data layers. With an extensive collection of facets, Knowledge Explorer enables spatial, temporal, full-text, and expert search with dereferencing functionality to support "follow-your-nose" exploration, and it allows users to narrow their search by selecting facets. Given the size of the underlying graph and dependency on GeoSPARQL, we have improved query performance by implementing Elasticsearch indexing, spatial query generation, and caching. Knowledge Explorer is capable of retrieving information within seconds, answering a wide variety of competency questions posed by researchers, humanitarian relief organizations, and the broader public, thus helping better perform tasks such as cross-gazetteer place retrieval and disaster assessment from global to local geographic scales.

References

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Marcelo Arenas, Bernardo Cuenca Grau, Evgeny Kharlamov, Šarūnas Marciuška, and Dmitriy Zheleznyakov. 2016. Faceted search over RDF-based knowledge graphs. Journal of Web Semantics 37 (2016), 55--74.
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Esko Ikkala, Eero Hyvönen, Heikki Rantala, and Mikko Koho. 2022. Sampo-UI: A full stack JavaScript framework for developing semantic portal user interfaces. Semantic Web 13, 1 (2022), 69--84.
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Krzysztof Janowicz, Pascal Hitzler, Wenwen Li, Dean Rehberger, Mark Schildhauer, Rui Zhu, Cogan Shimizu, Colby K Fisher, Ling Cai, Gengchen Mai, et al. 2022. Know, Know Where, KnowWhereGraph: A densely connected, cross-domain knowledge graph and geo-enrichment service stack for applications in environmental intelligence. AI Magazine 43, 1 (2022), 30--39.
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Charalampos Nikolaou, Kallirroi Dogani, Konstantina Bereta, George Garbis, Manos Karpathiotakis, Kostis Kyzirakos, and Manolis Koubarakis. 2015. Sextant: Visualizing time-evolving linked geospatial data. Journal of Web Semantics 35 (2015), 35--52. Geospatial Semantics.
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Blake Regalia, Krzysztof Janowicz, and Gengchen Mai. 2017. Phuzzy. link: A SPARQL-powered Client-Sided Extensible Semantic Web Browser. In VOILA@ ISWC. 34--44.
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Blake Regalia, Krzysztof Janowicz, Gengchen Mai, Dalia Varanka, and E Lynn Usery. 2018. Gnis-ld: Serving and visualizing the geographic names information system gazetteer as linked data. In European Semantic Web Conference. Springer, 528--540.
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Cogan Shimizu, Rui Zhu, Gengchen Mai, Colby Fisher, Ling Cai, Mark Schildhauer, Krzysztof Janowicz, Pascal Hitzler, Lu Zhou, and Shirly Stephen. 2021. A Pattern for Features on a Hierarchical Spatial Grid. In The 10th International Joint Conference on Knowledge Graphs. 108--114.
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Rui Zhu, Ling Cai, Gengchen Mai, Cogan Shimizu, Colby K Fisher, Krzysztof Janowicz, Anna Lopez-Carr, Andrew Schroeder, Mark Schildhauer, Yuanyuan Tian, et al. 2021. Providing Humanitarian Relief Support through Knowledge Graphs. In Proceedings of the 11th on Knowledge Capture Conference. 285--288.

Cited By

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  • (2024) GISphere Knowledge Graph for Geography Education: Recommending Graduate Geographic Information System/Science Programs Transactions in GIS10.1111/tgis.13283Online publication date: 3-Dec-2024
  • (2023)A Comprehensive Survey of Facet Ranking Approaches Used in Faceted Search SystemsInformation10.3390/info1407038714:7(387)Online publication date: 7-Jul-2023
  • (2023) EVKG : An interlinked and interoperable electric vehicle knowledge graph for smart transportation system Transactions in GIS10.1111/tgis.1306427:4(949-974)Online publication date: 23-May-2023
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cover image ACM Conferences
SIGSPATIAL '22: Proceedings of the 30th International Conference on Advances in Geographic Information Systems
November 2022
806 pages
ISBN:9781450395298
DOI:10.1145/3557915
Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for third-party components of this work must be honored. For all other uses, contact the Owner/Author.

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Association for Computing Machinery

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Publication History

Published: 22 November 2022

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Author Tags

  1. KnowWhereGraph
  2. environmental intelligence
  3. faceted search
  4. knowledge graph
  5. spatial query generation

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  • Demonstration

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Overall Acceptance Rate 257 of 1,238 submissions, 21%

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Cited By

View all
  • (2024) GISphere Knowledge Graph for Geography Education: Recommending Graduate Geographic Information System/Science Programs Transactions in GIS10.1111/tgis.13283Online publication date: 3-Dec-2024
  • (2023)A Comprehensive Survey of Facet Ranking Approaches Used in Faceted Search SystemsInformation10.3390/info1407038714:7(387)Online publication date: 7-Jul-2023
  • (2023) EVKG : An interlinked and interoperable electric vehicle knowledge graph for smart transportation system Transactions in GIS10.1111/tgis.1306427:4(949-974)Online publication date: 23-May-2023
  • (2023) GeoGraphViz : Geographically constrained 3D force‐directed graph for knowledge graph visualization Transactions in GIS10.1111/tgis.1305327:4(931-948)Online publication date: 20-Apr-2023

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