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Archive for the ‘Data availability’ Category

In our latest post, our Executive Director Melissanne Scheld sits down with Dryad’s Board of Directors Chair, Professor Charles Fox, to discuss challenges researchers face today, how Dryad is helping alleviate some of those pain points, why Dryad has had such staying power in a quickly changing industry,  . . . and then we move on to dessert. 

Chuck Fox

Can you tell us a little about your professional background and how that intersects with Dryad’s mission?

I wear two hats in my professional life – I am an evolutionary ecologist who studies various aspects of insect biology at the University of Kentucky, and I am a journal editor (Executive Editor of Functional Ecology).

My involvement with open data and Dryad began fortuitously in 2006. The British Ecological Society was invited to send a representative to a Data Registry Workshop, organized by the Ecological Society of America, to be held that December in Santa Barbara, California. I am (and was at that time) an editor of one of the British Ecological Society’s journals, Functional Ecology, and I live in the U.S. So Lindsay Haddon, who was Publications Manager for the BES, asked me to attend the workshop  as their representative. Before that meeting I don’t recall having thought much about open data or data archives, but I was excited to attend the meeting in part because the topic intrigued me and, selfishly, because my parents live in southern California and this was an opportunity to visit them. The discussions at that meeting, plus those at a couple follow-up meetings over the next couple years, including one at NESCent in Durham, North Carolina, and another in Vancouver, convinced me that data publishing, and open data more generally, should be a part of research publication. So I began lobbying the BES to adopt an open data policy and become a founding member of Dryad. I wrote a proposed data policy – just a revision of the Journal Sata Archiving Policy, JDAP, that many ecology and evolution journals adopted – and submitted that proposal to the BES’ publication committee. It took a few years, but in 2011 the BES adopted that data policy across their suite of journals and became a member of Dryad. The BES has since been a strong supporter of open data and required data publication as a condition of publishing a manuscript in one of their journals. Probably because I was a vocal proponent of data policies at BES meetings (along with a few others, most notably Tim Coulson), I was nominated to be a Dryad board member, and was elected to the board in 2013.

As an educator,  what are some of the biggest changes you’ve seen in the classroom during your career?

When I started teaching, first as a graduate student (teaching assistant) and then as a young university professor, we didn’t have Powerpoint and digital projectors. So I made heavy use of a chalkboard (or dry erase board) during lecture, and used an overhead projector for more complicated graphics. Students had to take detailed notes on the lecture, which required them to write furiously all throughout the class. Nowadays I produce detailed PowerPoint slides that include most of the material I cover, so I write very little on the chalkboard. And, because I can provide my slides to students before class – as a pdf that they can print and bring to class – the students are freed from scribbling furiously to capture every detail. Students still need to take some notes (my slides do not include every detail), but they are largely freed to listen to lecture and participate in class discussions. I am not convinced, though, that these changes have led to improved learning, at least not in all students. Having information too easily available, including downloadable class materials, seems to cause some students to actually disengage from class, and ultimately do poorly, possibly because they think they don’t need to attend class, or engage when they do attend, since they have all of the materials easily accessible to them outside the classroom?

What do you think the biggest challenges are for open science research today?

I have been amazed at how quickly open data has become accepted as the standard in the ecology and evolution research communities. When data policies were first proposed to journals there was substantial resistance to their adoption – journals were nervous about possibly driving away authors, and editors (who are also researchers) shared the views that were common in the community regarding ownership of their own data – but over just a few years the resistance largely disappeared among editors, societies and publishers, such that a large proportion of the top journals in the field have adopted policies requiring data to be published alongside research manuscripts. That said, some significant challenges remain, both on the researcher side and on the repository side. On the repository side, sustainable funding remains the largest hurdle. Data repositories cost money to run, such as for staff and infrastructure. Dryad has been relying on a mix of data publication charges (DPCs) and grants to fund its mission. This has worked for us so far, but constantly chasing grants is a lot of work for those writing grants, and the cost to researchers paying DPCs, albeit small, is not trivial for those without grant support.

On the researcher side, though data publishing has mostly become an accepted part of research publication in the community, there remain many important cultural and practical challenges to making open data universally practiced.  These include the development of standards for data citation and reuse (not restrictions on data reuse, but community expectations for citation and collaboration), balancing views of data ownership with the needs of the community, balancing the concerns of researchers that produce long-term datasets with those of the community, and others. We also need to improve education about data, such as teaching our students how to organize and properly annotate their datasets so that they are useful for other researchers after publication. Even when data are made available by researchers, actually using those data can be challenging if they are not well organized and annotated.

When researchers are deciding in which repository to deposit their research data, what values and functions should they consider?

Researchers should choose a repository that best fits the type of data they have to deposit and the community that will likely be reusing it. There are many repositories that handle specialized data types, such as genetic sequence data or data to be used for phylogenetic analysis. If your data suits a specialized archive, choose that. But the overwhelming majority of data generated by ecologists don’t fit into specialized archives. It’s for these types of data that Dryad was developed.

So what does Dryad offer researchers? From the perspective of the dataset author, Dryad links your dataset directly to the manuscript you have published about the dataset. This provides users detailed metadata on the contents of your dataset, helping them understand the dataset and use it correctly for future research. Dryad also ensures that your dataset is discoverable, whether you start at the journal page, on Dryad’s site, or any of a large number of collaborator services. The value of Dryad to the dataset user are similar – easy discoverability of data and clear links to the data collection details (i.e., links to the associated manuscripts).  

You’ve held several roles on Dryad’s Board of Directors – what about this organization compels you to volunteer your free time?

My experiences as a scientist, a journal editor, and participating in open data discussions have convinced me that data publication is an essential part of research publication. For decades, or even centuries, we’ve relied on a publishing model where researchers write manuscripts that describe the work they have done and summarize their results and conclusions for the broader community. That’s the typical journal paper, and was the limit of what could be done in an age where everything had to fit onto the printed page and be distributed on paper. Nowadays we have near infinite space in a digital medium to not just summarize our results, but also provide all of the details, including the actual data, as part of the research presentation. It will always be important to have an author summarize their findings and place their work into context – that intellectual contribution is an essential part of communicating your research – but there’s no reason that’s where we need to stop. I imagine a world where a reader can click on a figure, or table, or other part of a manuscript and be taken directly to the relevant details – the actual data presented in the figure, the statistical models underlying the analyses, more detailed descriptions of study sites or organisms, and possibly many other types of information about the experiment, data collection, equipment used, results, etc. We shouldn’t be constrained by historical limitations of the printed page. We’re not yet even close to where I think we can and should be  going, but making data an integral part of research publication is a huge step in the right direction. So I enthusiastically support journal mandates that require data to be published alongside each manuscript presenting research results. And facilitating this is a core part of Dryad’s mission, which leads me to enthusiastically support both Dryad’s mission and the organization itself!

Pumpkin or apple pie?  

Those are my two favorite pies, so it’s a tough question. If served a la mode, i.e., with ice cream, then I’d most often pick apple pie. But, without ice cream, I’d have to choose pumpkin pie.

Stay tuned for future conversations with industry thought leaders and other relevant blog posts here at Dryad News and Views.

 

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Image by Pete

A core part of Dryad’s mission is to make our data available as widely as possible. Although most users find Dryad content through our website or via links from journal articles, many users also find Dryad content through search aggregators and other third-party services. For our content to be available to these external services, we follow the FAIR principle of Interoperability and make metadata available through a number of machine-readable mechanisms, including OAI-PMH, the DataONE API, and RSS.

This year, we added support for a new machine-readable mechanism, the Schema.org metadata format. This format was originally developed by representatives of major search engines, including Google, Bing, and Yahoo. It has recently been endorsed by a number of data repositories, including Dryad. The Schema.org metadata format allows us to embed machine-readable descriptions of data directly into the same web pages that users use to view Dryad content.

For example, for this recently deposited data package, you can visit the web page to view information optimized for human users. But if you use your web browser’s option to “view source” on the page, you will find the following metadata embedded in the Schema.org format:

{
    "@context" : "http://schema.org/",
    "@type" : "Dataset",
    "@id" : "https://doi.org/10.5061/dryad.70d46",
    "name" : "Data from: Biodiverse cities: the nursery industry, 
    homeowners, and neighborhood differences drive urban tree
    composition",
    "author" : [ {
        "@type" : "Person",
        "@id" : "http://orcid.org/0000-0002-2649-9159",
        "givenName" : "Meghan",
        "familyName" : "Avolio"
    }, {
        "@type" : "Person",
        "@id" : "http://orcid.org/0000-0001-7209-514X",
        "givenName" : "Diane",
        "familyName" : "Pataki"
    }, {
        "@type" : "Person",
        "@id" : "http://orcid.org/0000-0002-5215-4947",
        "givenName" : "Tara",
        "familyName" : "Trammell"
    }, {
        "@type" : "Person",
        "givenName" : "Joanna",
        "familyName" : "Endter-Wada"
    } ],
    "datePublished" : "2017-12-18",
    "description" : "In arid and semi-arid regions, where few if any 
    trees are native, city trees are largely human-planted. Societal 
    factors such as resident preferences for tree traits, nursery 
    offerings, and neighborhood characteristics are potentially key 
    drivers of urban tree community composition and diversity....",
    "keywords" : [ "urban tree diversity" ],
    "citation" : {
        "@type" : "Article",
        "identifier" : "doi:10.1002/ecm.1290"},
    "publisher" : {
        "@type" : "Organization",
        "name" : "Dryad Digital Repository",
        "url" : "https://datadryad.org"}
}

The Schema.org metadata is available for any search engines or other interested users to collect and use. Last week, we saw the first major use of this metadata, with the launch of the Google Dataset Search service. Although Google Dataset Search is still in beta, the initial version is promising. It is easy to search and find content from Dryad and other data repositories all within a single system.

We are proud to make Dryad content available through the Dataset Search, and we look forward to other organizations making use of our data in new and exciting ways!

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This is the second in a series of blog posts highlighting new guidance from the Dryad curation team. Part 1 covered human subjects data. Part 2, from curator Shavon Stewart, focuses on best practices for sharing data associated with endangered species.


Ensuring safe data sharing for species under threat

Tasmanian devils, mountain gorillas, and black rhinos all have one thing in common. They are listed as critically endangered on the IUCN Red List of threatened species. Data archived in Dryad are publicly available, therefore, potential risks to endangered and vulnerable species must be carefully assessed before submitting data.

It is imperative that threatened species remain safe in their natural habitat. Publishing location data and habitat descriptions can expose species to hunters, poachers, and wildlife enthusiasts which can lead to their further decline, as well as hinder conservation efforts. The key is to provide fewer details of the species’ location for those with the intention of doing harm, without overly compromising analyses or replication by other researchers.

Here at Dryad, we recommend simple actions such as masking coordinates by a few decimal points or removing exact geo-coordinates from the dataset, which can limit illegal access to these vulnerable creatures.

Modified geo-coordinates for the breeding sites of Falco naumanni, from https://doi.org/10.5061/dryad.jq87d

Researchers who work with vulnerable species are encouraged to consult the following resources prior to submitting data:

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Two cheetahs running

Image credit Cat Specialist Group, catsg.org

Dryad is thrilled to announce a strategic partnership with California Digital Library (CDL) to address researcher needs by leading an open, community-supported initiative in research data curation and publishing.

Dryad was founded 10 years ago with the mission of providing open, not-for-profit infrastructure for data underlying the scholarly literature, and the vision of promoting a world where research data is openly available and routinely re-used to create knowledge.

20,000 data publications later, that message has clearly resonated. The Dryad model of embedding data publication within journal workflows has proven highly effective, and combined with our data curation expertise, has made Dryad a name that is both known and trusted in the research community. But a lot has changed in the data publishing space since 2008, and Dryad needs to change with it.

Who/what is CDL?

CDL LoroCDL was founded by the University of California in 1997 to take advantage of emerging technologies that were transforming the way digital information was being published and accessed. Since then, in collaboration with the UC libraries and other partners, they have assembled one of the world’s leading digital research libraries and changed the ways that faculty, students, and researchers discover and access information.

CDL has long-standing interest and experience in research data management (RDM) and data publishing. CDL’s digital curation program, the University of California Curation Center (UC3), provides digital preservation, data curation, and data publishing services, and has a history of coordinating collaborative projects regionally, nationally, and internationally. It is baked into CDL’s strategic vision to build partnerships to better promote and make an impact in the library, open research, and data management spaces (e.g., DMPTool, HathiTrust).

Why a partnership?

CDL and Dryad have a shared mission of increasing the adoption and availability of open data. By joining forces, we can have a much bigger impact. This partnership is focused on combining CDL’s institutional relationships, expertise, and nimble technology with Dryad’s position in the researcher community, curation workflows, and publisher relationships. By working together, we plan to create global efficiencies and minimize needless duplication of effort across institutions, freeing up time and funds, and, in particular, allowing institutions with fewer resources to support research data publishing and ensure data remain open.

Our joint Dryad-CDL initiative will increase adoption of open data by meeting researchers where they already are. We will leverage the strengths of both organizations to offer new products and services and to build broad, sustainable, and productive approaches to data curation. We plan to move quickly to provide new value:

  • For researchers: We will launch a new, modern and easier-to-use platform. This will provide a higher level of service, and even more seamless integration into regular workflows than Dryad currently offers
  • For journals and publishers: We will offer new integration paths that will allow direct communication with manuscript processing systems, better reporting, and more comprehensive curation services
  • For academic institutions: We will work directly with institutions to craft right-sized offerings to meet your needs

We have many details to hammer out and a lot of work to do, but among our first steps will be to reach out to you — each of the groups above — to discuss your needs, wants, and preferred methods of supporting this effort. With your help, the partnership will help us grow Dryad as a globally-accessible, community-led, non-commercial, low-cost service that focus on breaking down silos between publishing, libraries, and research.

As this partnership is taking shape, we ask for community input on how our collective efforts can best meet the needs of researchers, publishers, and institutions. Please stay tuned for further announcements and information over the coming months. We hope you share our excitement as we step into Dryad’s next chapter.

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Dryad is a general purpose repository for data underlying scholarly publications. Each new submission we receive is reviewed by our curation team before the data are archived. Our main priority is to ensure compliance with Dryad’s Terms of Service, but we also strongly believe that curation activities add value to your data publication, since curated data are more likely to be FAIR (findable, accessible, interoperable, and reusable).

FAIR

Before we register a DOI, a member of our curation team will check each data package to ensure that the data files can be opened, that they appear to contain information associated with a scientific publication, and that metadata for the associated publication are technically correct. We prefer common, non-proprietary file types and thorough documentation, and we may reach out if we are unable to view files as provided.

Our curators are also on the lookout for sensitive information such as personally identifiable human subjects data or protected location information, and for files that contain copyright and license statements that are incompatible with our required CC0 waiver.

To make the data archiving process more straightforward for authors, our curation team has authored sets of guidelines that may be consulted when preparing a data submission for a public repository such as Dryad. We hope these guidelines will help you as you prepare your Dryad data package, and that they will lessen the amount of time from point of submission to registered data DOI!

A series of blog posts will highlight each of the guidelines we’ve created. First up is our best practices for sharing human subjects data in an open access repository, from former Dryad curator Rebecca Kameny.

— Erin Clary, Senior Curator – curator@datadryad.org

_______________

Preparing human subject data for open access

Collecting, cleaning, managing, and analyzing your data is one thing, but what happens when you are ready to share your data with other researchers and the public?

peopleBecause our researchers come from fields that run the gamut of academia — from biology, ecology, and medicine, to engineering, agriculture, and sociology — and because almost any field can make use of data from human subjects, we’ve provided guidance for preparing such data for open access. We based our recommendations and requirements on well-respected national and international sources from government institutions, universities, and peer-reviewed publications.

Dryad curators will review data files for compliance with these recommendations, and may make suggestions to authors, however, authors who submit data to Dryad are ultimately responsible for ensuring that their data are properly anonymized and can be shared in a public repository.

handle-43946_960_720In a nutshell, Dryad does not allow any direct identifiers, but we do allow up to three indirect identifiers. Sound simple? It’s not. If the study involves a vulnerable population (such as children or indigenous people), if the number of participants is small, or if the data are sensitive (e.g., HIV status, drug use), three indirect identifiers may be too many. We evaluate each submission on a case-by-case basis.

If you have qualitative data, you’ll want to pay close attention to open-ended text, and may need to replace names with pseudonyms or redact identifiable text.

Quick tips for preparing human subjects data for sharing

  • Ensure that there are no direct identifiers.
  • Remove any nonessential identifying details.
  • Reduce the precision of a variable – e.g., remove day and month from date of birth; use county instead of city; add or subtract a randomly chosen number.
  • Aggregate variables that are potentially revealing, such as age.
  • Restrict the upper or lower ranges of a continuous variable to hide outliers by collapsing them into a single code.
  • Combine variables by merging data from two variables into a summary variable.

It’s also good research practice to provide clear documentation of your data in a README file. Your README should define your variables and allowable values, and can be used to alert users to any changes you made to the original dataset to protect participant identity.

Our guidelines expand upon the tips above, and link to some useful references that will provide further guidance to anyone who would like to share human subjects data safely.

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Chain link fence with highway in backgroundDryad is a curated, non-profit, general-purpose repository specifically for data underlying scientific and medical publications — mainly journal articles. As such, we place great importance on linking data packages to the articles with which they are associated, and we try our best to encourage authors and journals to link back to the Dryad data from the article, ideally in the form of a reference in the works cited section. (There’s still a long way to go in this latter effort; see this study from 2016 for evidence).

Submission integration provides closer coordination between Dryad and journals throughout the publishing workflow, and simplifies the data submission process for authors. We’ve already implemented this free service with 120 journals. If you’re interested in integrating your journal, please contact us.

We’re excited to share a few recent updates that are helping to make our data-article linkages more efficient, discoverable, and re-usable by other publishers/systems.

The Automated Publication Updater

One of the greatest housekeeping challenges for our curation team lies in finding out when the articles associated with Dryad data packages become available online. Once they do, we want to add the article citation and DOI link to our record as quickly as possible, and to release any data embargoes placed “until the article appears.” Historically, we’ve achieved this through a laborious patchwork of web searches, journal alert emails, and notifications from authors or editors themselves.

But over the past year or so, we’ve built and refined a webapp that we call the APU (or Automated Publication Updater). This super-handy tool essentially compares data packages in the Dryad workflow with publication metadata available at Crossref. When a good match is found, it automatically updates article-related fields in the Dryad record, and then sends our curation team an email alert so they they can validate the match and finalize the record. The webapp can be easily run by curators as often as needed (usually a few times a week).

While the APU doesn’t find everything, it has dramatically improved both efficiency with which we add article information and links to Dryad records — and our curators’ happiness levels. Big win. (If you’re interested in the technical details, you can find them on our wiki).

Scholix

Dryad is also pleased to be a contributor to Scholix, or Scholarly Link Exchange, an initiative of the Research Data Alliance (RDA) and the World Data System (WDS). Scholix is a high-level interoperability framework for exchanging information about the links between scholarly literature and data.

  • The problem: Many disconnected sources of scholarly output, with different practices including various persistent identifier (PID) systems, ways of referencing data, and timing of citing data.
  • The Scholix solutionA standard set of guidelines for exposing and consuming data-article links, using a system of hubs.

Here’s how it works:

  1. As a DataCite member repository, Dryad provides our data-publication links to DataCite, one of the Scholix Hubs. 
  2. Those links are made available via Scholix aggregators such as the DLI service
  3. Publishers can then query the DLI to find datasets related to their journal articles, and generate/display a link back to Dryad, driving web traffic to us, increasing data re-use, and facilitating research discovery.

Crossref publishers, DataCite repositories/data centers, and institutional repositories can all participate — information on how is available on the Scholix website.

Programmatic data access by ISSN

Did you know that content in Dryad is available via a variety of APIs (Application Program Interfaces)? Details are available at the “Data Access” page on our wiki.

The newest addition to this list is the ability to access Dryad data packages via journal ISSN. So, for example, if you wanted access to all Dryad content associated with the journal Evolution Letters, you would format your query as follows:

https://datadryad.org/api/v1/journals/2056-3744/packages

If you’re a human instead of a machine, you might prefer to visit our “journal page” for Evolution Letters:

https://datadryad.org/journal/2056-3744

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Dryad is committed to values of openness, collaboration, standardization, seamless integration, reduction of duplication and effort, and increased visibility of research products (okay, data especially). The above examples are just some of the ways we’re working in this direction.

If you’re part of an organization who shares these values, please contact us to find out how you can be part of Dryad.

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Keeping research data open and accessible has always been our goal at Dryad. Now, we’ve partnered with Data Archiving and Networked Services (DANS) to ensure long-term preservation of curated data. We are proud to be taking this step to safeguard open data and ensure future discoverability.

Public content on Dryad servers, currently over 15,000 data packages and 50,000 files, will soon be backed up in the DANS archive regularly (with multiple copies in different locations), to add an extra layer of protection.

DANS will also serve as Dryad’s successor archive, to ensure that functionality of Dryad Digital Object Identifiers (DOIs) is maintained for the long term. Metadata will be available in open access format to all researchers using the DANS online archiving system, EASY.

This partnership ensures that data in Dryad will remain accessible and linked to the scholarly literature in the unlikely case of disruption of Dryad services. DANS has proven to be a natural fit for us in this effort. Dryad and DANS share a deep commitment to the stewardship of global scientific data on behalf of more than 50,000 researchers who trust us with their data and hundreds of publishing partners working with Dryad.

Henk Harmsen, Deputy director of DANS, says:

Together with Dryad we are committed to making digital research data and related outputs Findable, Accessible, Interoperable, and Reusable (FAIR). This collaboration minimizes the risk of loss or corruption of data over time. We are pleased to extend our capacity and data archive by partnering with Dryad.

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