About - AOP-Wiki RDF Dashboard

Project Overview

The AOP-Wiki RDF Dashboard provides interactive visualizations and analytics for the Adverse Outcome Pathway (AOP) knowledge base. It monitors quarterly RDF snapshot releases, enabling researchers, curators, and regulators to explore how the AOP-Wiki database evolves over time.

The dashboard queries the AOP-Wiki SPARQL endpoint to generate visualizations of entity counts, data quality metrics, network topology, and historical trends across 33 quarterly snapshots (2018-04-01 to 2026-04-01). Every release is loaded as its own dated named graph (http://aopwiki.org/graph/YYYY-MM-DD), so the full history of the resource is queryable from a single endpoint.

Features

Database Snapshot: Current entity counts, distributions, completeness metrics, and data quality analysis for any version
Historical Trends: Growth patterns, annotation progress, and property coverage evolution across all releases
Network Analysis: Interactive Key Event network with centrality metrics, PageRank, and community detection
Data Export: CSV, PNG, and SVG downloads for all visualizations with version-tagged filenames; every plot exposes the SPARQL query behind it
Usage statistics: aggregate, privacy-respecting page and download counts at /stats (no cookies, no personal data)

Data Source & Access

All data is sourced from the AOP-Wiki and served as RDF via a public SPARQL endpoint.

AOP-Wiki multi-version SPARQL endpoint

The available versions are machine-discoverable: a DCAT version catalogue and a SPARQL 1.1 service description live in the http://aopwiki-multirdf.vhp4safety.nl/metadata graph. For example, to list every version:

SELECT ?v WHERE {
  GRAPH <http://aopwiki-multirdf.vhp4safety.nl/metadata> {
    ?d <http://www.w3.org/2002/07/owl#versionInfo> ?v
  }
} ORDER BY DESC(?v)

AOP-Wiki Website

How to Cite

If you use this resource, please cite the AOP-Wiki RDF paper:

Martens M., Evelo C.T., Willighagen E.L. (2022). Providing Adverse Outcome Pathways from the AOP-Wiki in a Semantic Web Format to Increase Usability and Accessibility of the Content. Applied In Vitro Toxicology 8(1):2–13. doi:10.1089/aivt.2021.0010

Dataset (all versions, concept DOI): 10.5281/zenodo.13353286

License & FAIR

Dashboard and pipeline code are released under the MIT license. The RDF data served here is CC-BY-SA 4.0, inherited from the AOP-Wiki.

The resource is designed to be FAIR: each version is a dated named graph with machine-readable DCAT/VoID metadata and a SPARQL 1.1 service description, every dashboard figure is reproducible from its published SPARQL query, and releases are archived with persistent DOIs.

Funding & Acknowledgment

This dashboard is developed within the VHP4Safety project (Virtual Human Platform for Safety Assessment), funded by the Dutch Research Council (NWO).

Requesting a New Plot

Have a question about the AOP-Wiki that the current visualizations don't answer? You can request a new plot in two ways — both land on the project's issue tracker, where existing requests are also visible:

From the web (one click): open a pre-filled plot-request form. It prompts you for what the plot should show, whether it's a latest-snapshot or historical-trend view, the RDF properties involved, and who benefits.
On GitHub: go to the issue tracker, click New issue, and choose the New Plot Proposal template.

A GitHub account is needed to submit. The more concretely you describe the question and the expected chart type, the faster it can be turned into a plot.

Contact & Feedback

Found a bug or have a feature request? Open an issue on GitHub

Source code: GitHub Repository

About the AOP-Wiki RDF Dashboard