2012 on Crossref

Crossref Metadata Search++

Geoffrey Bilder — Thu, 11 Oct 2012 00:00:00 +0000

We have just released a bunch of new functionality for Crossref Metadata Search. The tool now supports the following features:

A completely new UI
Faceted searches
Copying of search results as formatted citations using CSL
COinS, so that you can easily import results into Zotero and other document management tools
An API, so that you can integrate Crossref Metadata Search into your own applications, plugins, etc.
Basic OpenSearch support- so that you can integrate Crossref Metadata Search into your browser’s search bar.
Searching for a particular Crossref DOI
Searching for a particular Crossref ShortDOI
Searching for articles in a particular journal via the journal’s ISSN

At the moment, Crossref Metadata Search (CRMDS) is a Crossref Labs project and, as such, should be used with some trepidation. Our goal is to release CRMS as a production service ASAP, but we wanted to get public feedback on the service before making the move to a production system.

PatentCite

Geoffrey Bilder — Mon, 13 Aug 2012 00:00:00 +0000

If you’ve ever thought that scholarly citation practice was antediluvian and perverse- you should check-out patents some day.

Over the past year of so Crossref has been working with Cambia and the The Lens to explore how we can better link scholarly literature to and from the patent literature. The first object of our collaboration was to attempt to link patents hosted on the new, beta version of The Lens to the Scholarly literature. To do this, Crossref and Cambia been enhancing Crossref’s citation matching mechanisms in order to better resolve the wide variety of eclectic and terse patent citation styles to Crossref DOIs.

You can see the results of these ongoing attempts on the The Lens beta site where all of The Len’s ~~8 million+~~ 80 million+ patents and applications (obtained through subscriptions with WIPO, USPTO, EPO and IP Australia) are starting to be linked directly to the scholarly literature. See, for example:

http://beta.lens.org/lens/patent/US\_RE42150\_E1/citations
[Editor’s update: Link is broken. Removed January 2021]

Crossref has taken this matched data and has now released a Crossref Labs *experimental* service , called PatentCite, that allows you to take any Crossref DOI and see what Patents in the The Lens system cite it.

As with all Crossref Labs services- this one is likely to be:

a) As stable as the global economy

c) As reliable as a UK train

ii) Out-of-date. It is based on a snapshot of Crossref /Lens data.

As accurate as my list ordering

Howzat for an SLA?

As we get feedback from Crossref’s membership and as we gain more experience linking Patents to and from the scholarly literature, we will explore including this functionality in our production Cited-by service. But until then- please send us your feedback on this experimental service.

Crossref and DataCite unify support for HTTP content negotiation

Crossref — Thu, 17 May 2012 00:00:00 +0000

Last year Crossref and DataCite announced support for HTTP content negotiation for DOI names. Today, we are pleased to report further collaboration on the topic. We think it is very important that the two largest DOI Registration Agencies work together in order to provide metadata services to DOI names.

The current implementation is documented in detail at http://citation.crosscite.org/

The documentation explains HTTP content negotiation as implemented by both Registration Agencies and provides a list of supported resource/content/record types.

An example application of HTTP content negotiation is a citation formatting service. You can try it at http://citation.crosscite.org/.

This service will accept DOIs from both Crossref and DataCite, unlike the previous formatting service which accepted only Crossref DOI names.

This is possible because Crossref and DataCite support a shared, common metadata format. When you input a DOI into the formatting service, it doesn’t know where the DOI was registered. The service will make an

HTTP content negotiation request to the global DOI resolver specifying which format of the metadata should be returned in the HTTP Accept header. The global DOI resolver will notice (Accept header!) that this is not a regular DOI resolution request; it will turn to Crossref or DataCite accordingly for the relevant metadata instead of redirecting to a landing page. The format of metadata is shared between both registration agencies so the formatting service can interpret it without knowledge of the DOI origin.

In summary HTTP content negotiation lets you process a DOI’s metadata without knowledge of its origin or specifics of the registration agency.

If you have any problems, email us at tech@datacite.org or labs@crossref.org. For general discussion please kindly leave a comment below.

PDF-Extract

Geoffrey Bilder — Tue, 17 Apr 2012 00:00:00 +0000

PDF-EXTRACT

Crossref Labs is happy to announce the first public release of “pdf-extract” an open source set of tools and libraries for extracting citation references (and, eventually, other semantic metadata) from PDFs. We first demonstrated this tool to Crossref members at our annual meeting last year. See the pdf-extract labs page for a detailed introduction to this new set of tools.

If you are unable to download and install the tool, you can play with a experimental web interface called “Extracto.” Be warned, Extracto is running on very feeble server using an erratic and slow internet connection. The only guarantee that we can make about using it is that it will repeatedly fall over and annoy you. The weasel has spoken.

DOIs for PHD Comics’ Valentine’s Day Reading List

Geoffrey Bilder — Tue, 14 Feb 2012 00:00:00 +0000

PHD Comics has posted its Valentine’s Day Reading list.

Without DOIs!

So in order to preserve the scholarly citation record, we’ve resolved those that have DOIs….

Title: The St. Valentine’s Day Frontal Passage

Citation: Sassen, K, 1980, ‘The St. Valentine’s Day Frontal Passage’, Bulletin of the American Meteorological Society, vol. 61, no. 2, p. 122.

Crossref DOI: http://dx.doi.org.pluma.sjfc.edu/10.1175/1520-0477(1980)061<0122:TSVDFP>2.0.CO;2

Title: SUICIDE AND HOMICIDE ON ST. VALENTINE’S DAY

Citation: LESTER, D, 1990, ‘SUICIDE AND HOMICIDE ON ST. VALENTINE’S DAY’, Perceptual and Motor Skills, vol. 71, no. 7, p. 994.

Crossref DOI: http://dx.doi.org.pluma.sjfc.edu/10.2466/PMS.71.7.994-994

Title: The St. Valentineʼs Day Massacre

Citation: Eckert, W, 1980, ‘The St. Valentineʼs Day Massacre’, The American Journal of Forensic Medicine and Pathology, vol. 1, no. 1, pp. 67-70.

Crossref DOI: http://dx.doi.org.pluma.sjfc.edu/10.1097/00000433-198003000-00011

Title: For Valentine’s Day

Citation: Kutzner, H, 2001, ‘For Valentine’s Day’, Cancer, vol. 91, no. 4, pp. 804-805.

Crossref DOI: http://dx.doi.org.pluma.sjfc.edu/10.1002/1097-0142(20010215)91:4<804::AID-CNCR1067>3.3.CO;2-K