Data Linking and Indexing in the Astrophysics Data System
Abstract
This talk highlights how data is represented in the Astrophysics Data System (ADS) in the form of links and citations. We present how necessary metadata is received and processed. In this presentation we also emphasize the importance of making research data discoverable and assessable with accurate and descriptive metadata. -----
Full text
Data Citation and Linking in the ADS Edwin Henneken [email protected] Astrophysics Data System | @adsabs | https://ui.adsabs.harvard.edu LISA X Meeting | 11/3/2025
2 ADS links to data in many ways Links to archives with data Links to NED and SIMBAD Links to VizieR Tables Links to paper plots and images
Example of Data Mentions: Lee, Jeong Hwan et al, The Astrophysical Journal, Volume 966, Issue 1, id.113 3 ApJ paper has the following DOIs linked in the Acknowledgements: ●10.17909/8kp6-9223 ●10.17909/8nfp-hr63 ●10.17909/b7cb-xc61 ●10.17909/fna5-we11 ●10.17909/hh6k-9z63 ●10.17909/tdx4-0a35 What does the ADS "know" about these DOIs?
Example of Data Mentions: Lee, Jeong Hwan et al, The Astrophysical Journal, Volume 966, Issue 1, id.113 4 ApJ paper has the following DOIs linked in the Acknowledgements: ●10.17909/8kp6-9223 ●10.17909/8nfp-hr63 ●10.17909/b7cb-xc61 ●10.17909/fna5-we11 ●10.17909/hh6k-9z63 ●10.17909/tdx4-0a35 What does the ADS "know" about these DOIs? We have the data linked to the record, but that does not make the individual datasets discoverable by e.g. their name or DOI.
Example: what does ADS know about 10.17909/8kp6-9223? 5 The record is not indexed in ADS...
For example: what does ADS know about 10.17909/8kp6-9223? 6 The record is not indexed in ADS... ...but is found as a mention in fulltext Consequence: Only records that are indexed in ADS accumulate citations (a citation in ADS is a relationship between two records in ADS, by design)
Example of Data Citation: Zhang, Chi et al., Journal of Geophysical Research: Planets, Volume 127, Issue 8, article id. e07334 7 This paper cites 3 PDS datasets, indexed in ADS:
What is indexed, linked in ADS? 8 Indexed (an actual database record, searchable) ● The scholarly literature ● VizieR records, IVOA standards, observing and funding proposals ● Software products: ASCL records, software packages cited via DOI ● Cited data products (more broadly), other research objects such as notebooks Indexed records represent curated scholarly research objects. They are discoverable and citable via ADS, and their metrics are tracked Linked (resource accessible from a record via a link) ●Data Products hosted by external collaborators (Archives, SIMBAD, NED) Linked data collections can be used as a filter in ADS property:data → "all records in ADS with at least one data link" data:HST → "all records in ADS with at least one data link, labeled HST"
9 Data: Mention vs Citation, Ongoing efforts Mention Citation Free text or URL DOI Free text or URL DOI Use cases in Data Avail. Section: in Data Avail. Section: in references: in references: in ADS Searchable in ADS fulltext URL: Link to data product created in ADS Searchable in ADS fulltext Link to data product created in ADS URL ignored, citation may not get counted unless matched via heuristics Record for corresponding DOI created(*)/identified and citation counted We have started to index datasets in addition to the traditional ones (VizieR, PDS)