[

Crossref Labs loves to be the last to jump on an internet trend, so what better than than to combine the Doge meme with altmetrics?

Note: The API calls below have been superceeded with the development of the Event Data project. See the latest API documentation for equivalent functionality

Want to know how many times a Crossref DOI is cited by the Wikipedia?

The South Park movie , “Bigger, Longer & Uncut” has a DOI:

a) http://dx.doi.org.ezproxy.baylor.edu/10.5240/B1FA-0EEC-C316-3316-3A73-L

So does the pornographic movie, “Young Sex Crazed Nurses”:

b) http://dx.doi.org.ezproxy.baylor.edu/10.5240/4CF3-57AB-2481-651D-D53D-Q

And the following DOI points to a fake article on a “Google-Based Alien Detector”:

c) http://dx.doi.org.ezproxy.baylor.edu/10.6084/m9.figshare.93964

And the following DOI refers to an infamous fake article on literary theory:

d) http://dx.doi.org.ezproxy.baylor.edu/10.2307/466856

This scholarly article discusses the entirely fictitious Australian “Drop Bear”:

You can now easily search for publications and add them to your ORCID profile in the new beta of Crossref Metadata Search (CRMDS). The user interface is pretty self-explanatory, but if you want to read about it before trying it, here is a summary of how it works.

When you go to to CRMDS, you will see that there is now a small ORCID sign-in button on the top right-hand side of the screen.

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.

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.

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.

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.ezproxy.baylor.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.

In April In April for its DOIs. At the time I cheekily called-out DataCite to start supporting content negotiation as well.

Edward Zukowski (DataCite’s resident propellor-head) took up the challenge with gusto and, as of September 22nd DataCite has also been supporting content negotiation for its DOIs. This means that one million more DOIs are now linked-data friendly. Congratulations to Ed and the rest of the team at DataCite.

We hope this is a trend. Back in June Knowledge Exchange organized a seminar on Persistent Object Identifiers. One of the outcomes of the meeting was “Den Haag Manifesto” a document outlining five relatively simple steps that different persistent identifier systems could take in order to increase interoperability. Most of these steps involved adopting linked data principles including support for content negotiation. We look forward to hearing about other persistent identifiers adopting these principles over the next year.

So does anybody remember the posting DOIs and Linked Data: Some Concrete Proposals?

Well, we went with option “D.”

From now on, DOIs, expressed as HTTP URIs, can be used with content-negotiation.

Let’s get straight to the point. If you have curl installed, you can start playing with content-negotiation and Crossref DOIs right away:

curl -D - -L -H   “Accept: application/rdf+xml” “http://dx.doi.org.ezproxy.baylor.edu/10.1126/science.1157784” 

curl -D - -L -H   “Accept: text/turtle” “http://dx.doi.org.ezproxy.baylor.edu/10.1126/science.1157784”

While working on an internal project, we developed “pdfstamp“, a command-line tool that allows one to easily apply linked images to PDFs. We thought some in our community might find it useful and have released it on github. Some more PDF-related tools will follow soon.