Recommended citation now available in CaltechDATA

Tuesday, February 19, 2019

All CaltechDATA records now include a recommended citation as part of the description field.  A link to the citation in different citation styles is also available.  A recommended citation will appear on new records approximatly 10 minutes after the record is submitted.  This service is powered by CrossCite and the DataCite metadata we register as part of the DOI creation process. See an example at

Caltech logins restored

Wednesday, January 09, 2019

Caltech logins to CaltechDATA have now been restored; thanks to IMSS for their assistance troubleshooting the problem.

Caltech login outage

Tuesday, January 08, 2019

We are experiencing an issue using Caltech logins to access CaltechDATA.  If you need to submit files while we investigate the problem, email us at data [at]

CaltechDATA back to normal operation

Saturday, December 15, 2018

DataCite has completed its scheduled maintenance and CaltechDATA has returned to normal operation.

CaltechDATA back to normal operation

Saturday, December 15, 2018

DataCite has completed its scheduled maintenance and CaltechDATA has returned to normal operation.

Scheduled Maintenance: Delayed DOI Minting

Tuesday, December 11, 2018

DOI minting in CaltechDATA will be delayed on Saturday, December 15 due to scheduled maintenance at DataCite.  All other features of CaltechDATA will work as normal.

LexisNexis Academic is now Nexis Uni!

Nexis Uni
Thursday, August 16, 2018

This past winter, LexisNexis rolled a new platform called Nexis Uni. In addition to better linking from search tools, the new platform features translation enhancement, improved search functions, and new content. For help finding a familiar item on the new interface, please library [at] (contact the library).


Enhanced software preservation now available in CaltechDATA!

Friday, March 09, 2018


CaltechDATA has supported automatic preservation of GitHub software repositories since launch, so anyone at Caltech can get a DOI (permanent identifier) for their software project and have Caltech Library handle long term preservation. However, most GitHub repositories do not include clear metadata such as authors, affiliations, or ORCID identifiers. CaltechDATA now supports CodeMeta, a new standard format for software metadata. By including a codemeta.json file in your GitHub repo, your full author list, keywords, and license will be listed in CaltechDATA and registered with your DOI.

This improvement is powered by ames, a Python package for automating metadata changes developed at Caltech Library. Every 5 minutes, ames harvests all the GitHub-created records in CaltechDATA and stores them using dataset (our lightweight data storage package). These records are then analyzed for codemeta.json files.  If a CodeMeta file is found, the relevant metadata is extracted and added to the CaltechDATA record and DOI. We currently support authors, keywords, and license fields - but more will be added as a community of practice develops. We’re also exploring better ways to generate CodeMeta files as part of the software release process.



CaltechDATA powers the GPS thesis map!

Wednesday, February 14, 2018

View locations from Geological and Planetary Science division theses.  CaltechDATA now contains hundreds of historic plates and maps that were supplements to theses.  From the map interface you can see all the items that have geocoordinates.  Want your thesis to show up on the map?  Send us an email at data [at]