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Data Management for Graduate Students
- 1. Data Management for Graduate Students Marriott Library Graduate Student Workshop Series Rebekah Cummings, Research Data Management Librarian J. Willard Marriott Library, University of Utah September 27, 2016
- 2. • Introductions • What are data? • Why manage data? • Data Management Plans • Data Organization • Metadata • Storage and Archiving • Questions In the next hour…
- 4. What is data management? Activities and practices that support long- term preservation, access, and use of data
- 5. What are data? “The recorded factual material commonly accepted in the research community as necessary to validate research findings.” - U.S. OMB Circular A-110
- 8. We manage data first and foremost for ourselves
- 9. Why else manage data? • Meet grant and journal requirements • Promote reproducible research • Enable new discoveries from your data
- 10. We are trying to avoid this scenario…
- 11. Two bears data management problems 1. Didn’t know where he stored the data 2. Saved one copy of the data on a USB drive 3. Data was in a format that could only be read by outdated, proprietary software 4. No codebook to explain the variable names 5. Variable names were not descriptive 6. No contact information for the co-author Sam Lee
- 12. Data Management Plans • What data are generated by your research? • What is your plan for managing the data? • How will your data be shared?
- 13. Elements of a DMP • Types of data, including file formats • Data description • Data storage • Data sharing, including confidentiality or security restrictions • Data archiving and responsibility • Data management costs
- 14. DMPTool – CDL
- 16. File naming
- 18. File naming best practices 1. Be descriptive not generic 2. Appropriate length (about 25 chars or less) 3. Be consistent 4. Think critically about your file names
- 19. File naming best practices • Files should include only letters, numbers, and underscores/dashes. • No special characters. • No spaces; Use dashes, underscores, or camel case (likeThis). • Avoid case dependency.Assume this, THIS, and tHiS are the same. • Have a strategy for version control. • Don’t overwrite file extensions
- 21. Version Control - Numbering 001 002 003 009 010 099 Use leading zeros for scalability Bonus Tip: Use ordinal numbers (v1,v2,v3) for major version changes and decimals for minor changes (v1.1, v2.6) 1 10 2 3 9 99
- 22. Version Control - Dates If using dates useYYYYMMDD June2015 = BAD! 06-18-2015 = BAD! 20150618 = GREAT! 2015-06-18 = This is fine too
- 23. From a DMP… “Each file name, for all types of data, will contain the project acronym PUCCUK; a reference to the file content (survey, interview, media) and the date of an event (such as the date of an interview).
- 24. • PLPP_EvaluationData_Workshop2_2014.xlsx • MyData.xlsx • publiclibrarypartnershipsprojectevaluationdataw orkshop22014CummingsHelenaMontana.xlsx Who filed better?
- 25. Who filed better? • July 24 2014_SoilSamples%_v6 • 20140724_NSF_SoilSamples_Cummings • SoilSamples_FINAL
- 26. Structuring folders and files • Consider all the types of files you will handle during the course of your project. • Develop a nested folder structure that makes sense for your project and your team’s retrieval needs. • Name folders clearly, without special characters. • Use a standard folder structure for each project or subproject (including making folders for files not yet created) • Create a reference document (README file) that notes the purpose of different folder. University of Massachusetts Medical School Library http://libraryguides.umassmed.edu/file_management
- 27. README files
- 29. Describing data
- 30. Research Documentation • Grant proposals and related reports • Applications and approvals (e.g. IRB) • Codebooks, data dictionaries • Consent forms • Surveys, questionnaires, interview protocols • Transcripts, hard copies of audio and video files • Any software or code you used (no matter how insignificant or buggy)
- 31. IJ? XVAR? FNAME?
- 32. What goes in a codebook? • Variable name • Variable meaning • Variable data types • Precision of data • Units • Known issues with the data • Relationships to other variables • Null values • Anything else someone needs to better understand the data
- 33. Metadata Unstructured Data Structured Data There was a study put out by Dr. Gary Bradshaw from the University of Nebraska Medical Center in 1982 called “ Growth of Rodent Kidney Cells in Serum Media and the Effect of Viral Transformation On Growth”. It concerns the cytology of kidney cells. Title Growth of rodent kidney cells in serum media and the effect of viral transformations on growth. Author Gary Bradshaw Date 1982 Publisher University of Nebraska Medical Center Subject Kidney -- Cytology
- 34. At the very least… • Title • Creator • Description • Date • Type • Publisher • Format • Identifier (DOI) • Rights • Any other critical information to understand or cite the data.
- 35. Data ownership
- 36. Data Storage
- 37. LOCKSS (Lots of Copies Keeps Stuff Safe)
- 38. Options for data storage • Personal computers or laptops • Networked drives • External storage devices
- 39. 3-2-1 Backup Rule Have 3 copies of your data On 2 different media In more than 1 physical location
- 41. Language from a DMP “All data files will be stored on the University server that is backed up nightly.The University's computing network is protected from viruses by a firewall and anti-virus software. Digital recordings will be copied to the server each day after interviews. Signed consent forms will be stored in a locked cabinet in the office. Interview recordings and transcripts, which may contain personal information, will be password protected at file-level and stored on the server. Original versions of the files will always be kept on the server. If copies of files are held on a laptop and edits made, their file names will be changed.”
- 43. Archiving options • Domain-specific repository • General Purpose Data Repository • Institutional repository
- 44. When you archive… • Save the data in both its proprietary and non-proprietary format (e.g. Excel and CSV; Microsoft Word and ASCII) • Consider any restrictions on your data (copyright, patent, privacy, etc.) • When possible/mandated/desired, share your data online with a persistent identifier (DOI or ARK) • Include a data citation and state how you want to get credit for your data • Link your data to your publications as often as possible
- 45. Your data librarians Daureen Nesdill Research Data Management Librarian, Sciences Darell Schmick Research Librarian, Health Sciences Rebekah Cummings Research Data Management Librarian, Social Sciences & Humanities
- 46. Major takeaways • Data management starts at the beginning of a project • Document your data so that someone else could understand it • Have more than one copy of your data • Consider archiving options when you are done with your project
- 47. Questions? Rebekah Cummings rebekah.cummings@utah.edu (801) 581-7701 Marriott Library, 1705Y …or ask now!
Notes de l'éditeur
- Specifically we are going to be be talking about data management of your research data, but some of the principles will help you when thinking about the organization of any digital materials, your notes, your PowerPoints, your grocery lists…. Most of these concepts are pretty straightforward, they almost seem like common sense, but the reality is that very few people manage their data well and if you do, you will be at a big advantage.
- Overview of what we will be covering in this session.
- Introductions Name Major Are you working on a research project?
- Data Management refers to activities throughout the data lifecycle. – The activities surrounding data management include Being a responsible reseracher. These activities happen during the research and after the research is completed.
- This is the most commonly cited definition when someone wants to pin a definition on data, which is surprisingly difficult to do. What data really is is evidence. Or as Michael Buckland puts it “alleged evidence”. It’s what you are putting forth as evidence for your research findings. “We’ve looked at all this stuff” using these methods and here are our conclusions. Research papers often give methods and conclusions but what they don’t usually contain is the underlying data or evidence. So what is data – EVIDENCE FOR YOUR RESEARCH
- One of the characteristics of data is that it tends to be incredibly diverse. Scientific data – observations, computational models, lab notebooks Social sciences – results of surveys, video recordings, field notes Humanities – text mining, newspapers, records of human history Each field tends to have their own practices around data collection, analysis, sharing, etc.
- Another attribute of data is that it tends to get messy Most of us just don’t realize this because our messy, disorganized files are locked up in a neat little box called your computer. Don’t believe me? How long would it take you to find a photo from five years ago on your computer? Here is a hint. If your image files start with DSC_ or IMG_ and some number following it, it will probably take you a very long time. If most people’s digital files were analog, this is exactly what they would look like.
- Why manage data? The main reason you should manage your data is for yourself and for your own research team. Data management is one of those essential skills you need to get just like learning how manage citations or understand research methods. But it can feel a bit boring like filing. But six months later when you want to locate a file, or even understand your file, your future self will thank you. Most important reason to have good data management is for your own good and the good of your research team. If you want to be able to locate your files or understand your files in the future, good data management is crucial. Plus, unlike research methods and managing citations, this is something that even seasoned scientists are not very good at. So you will have something to offer your research team in the future even as a young scientists. USE THE “DOING YOUR TAXES” ANALOGY – it’s easier if you’ve managing your receipts effectively throughout the year and compiling spreadsheets throughout the year, you will be in much better shape in April. Can you scramble for information at the end? Of course! But you are not maximizing your time and resources. You are likely not getting the returns you shoud and you are wasting time. Sometimes, the documentation isn’t available later. You won’t have to make guesses.
- Data management is one of those essential skills you need to get just like learning how manage citations or understand research methods. But it can feel a bit boring like filing. But six months later when you want to locate a file, or even understand your file, your future self will thank you. Most important reason to have good data management is for your own good and the good of your research team. If you want to be able to locate your files or understand your files in the future, good data management is crucial. Plus, unlike research methods and managing citations, this is something that even seasoned scientists are not very good at. So you will have something to offer your research team in the future even as a young scientists. NSF is now starting to look at DMPs as part of their post-award assessment checking to see if researchers did what they said they were going to do with data
- https://www.youtube.com/watch?v=N2zK3sAtr-4
- The most important thing you can do is to have and follow and data management plan. Next we are going to move on and talk a little bit about these data management plans that funding agencies are requiring (and I am promoting as a good idea in general!!) Your DMP should answer three main questions…
- Mention that in the UK your data management plan has to show that you’ve already looked for existing data. – ESRC Email me I would be happy to send you more examples.
- We’ve talked in broad strokes about data management but now we are going to focus in one some of the more specific aspects of managing data well. One of the simplest things that you can do is to be more consistent with file naming, version control, and folder structures. This section has a lot to do with organizing and naming your research materials so that you can find them later and so they will open in any environment.
- We’ve talked about data management at kind of a high level. What is data? Why should you manage it well? Now we are going to talk about some of the nuts and bolts of data management. Starting with file naming. How do you currently name files? Do you have a system? To some extent we are all guilty of bad file naming but when it comes to your research it is important to create a system that makes sense not just to you, but other people as well. are all guilty of bad file naming but when it comes to your research it is important to create a system that makes sense not just to you, but other people as well.
- Here are some examples of bad file names because they aren’t descriptive and don’t help us find the file later, and also because there is a possibility that these files will be overwritten the next time you name a file the same thing.
- File names should reflect the contents of a file and enough information to uniquely identify the data file without getting way too long. Don’t be generic in your file names Be consistent!!!! Your file name may include project acronym, location, investigator, date of data collection, data type, and version number. Whatever will help you or someone else uniquely identify that file in the future. Think about what can be added and what can be omitted in your file names. If you are the only person on a project, you probably don’t need your name. If there are going to be multiple versions of a file, make sure you add a version number or a date to differentiate.
- Here are some file naming best practices that will make sure your file will open in any environment with any operating system. Special characters can have special meaning in certain programming languages and operating systems and can be misinterpreted in file names. Uppercase lettering can affect numbering. Ex: $ = beginning of a variable names in php. A backslash designates file path locations in the Windows operating system. Spaces make things easier for humans to read but some browsers and software don’t know how to interpret spaces. Sometimes it only reads a file up to the space, which can cause problems.
- There are also best practices around version control and numbering. Version control is often achieved by using dates or a standard numbering system
- January, June, and July are going to line up next to each other. April and August are going to be together December is going to come before June, etc and all your Januarys from every year are going to line up.
- #1 is the best one. Descriptive Not too long, not too short
- #2 is the best choice here. First example here has spaces, irregular dates that won’t line up in order, special characters Third example may not be descriptive enough for for a secondary user. Also, beware of the “FINAL” as opposed to using a standardized numbering system.
- That is how to name an individual file. What about your whole file structure? All your research materials need to be in one folder. The top level folder should include the project title and year. If it is multiple year, include the first and last year in the title. The substructures should have a clear and consistent naming convention that is documented in a README file.
- Exercise!! Possible solutions: Organize by type of file (all transcripts in one folder all audio recordings in another) Organize by person (Have a Cliff Barrett folder and a Robert Bennett folder) Problems with file names: Dates are not standardized Special characters/spaces File type in the file name which is unnecessary Unnecessary information in file name – “found on Internet, think okay, better than mine” picture NO consistency to file naming
- Next we are going to talk about data description. A third characteristic of data is that it often needs context in order to be understandable If you have a spreadsheet of survey responses, you need to have the survey to understand the responses. You also need the codebook that explains your variable names and the values that you used, how you cleaned your data. Once again, try to think how a secondary user would interpret your data. When we say metadata we are really talking about two things: human readable documentation and machine-readable metadata The importance of documenting your data throughout your research project cannot be overestimated. Document your data with a certain level of reuse in mind. Replication? Verification? inspection?
- First and foremost, metadata includes any surrounding documentation you may need to make sense of your data. An excel spreadsheet of survey responses is fairly useless if you haven’t kept the survey that generated those responses.
- If you are working with variables, you must make a codebook and include it in your documentation.
- Metadata is very important for other people looking to use your project. Human readable vs. machine readable
- https://schema.labs.datacite.org/meta/kernel-4.0/doc/DataCite-MetadataKernel_v4.0.pdf
- Most researchers are very protective of their data. You work hard to collect it and you have a huge intellectual investment in it. Also, since most people have never been asked to hand over or even share their data, the assumption is often that the researcher is the one who owns the data. The truth, however, is more complicated than that. If you are an employee of the University, your data belongs to te University. If you move your research, you can request to take a copy of your data with you. UCSD/ USC court case – database Usually the PI is responsible for the data – data governance
- Through the course of your research your data needs to be stored securely, backed up, and maintained regularly. Once again this sounds like common sense, but you will be happy when you pay some attention to it. (e.g. when your laptop crashes or is stolen.). I’m going to play a short video clip that has nothing to do with research data, but I think it perfectly captures the way we approach the storage aspect of data management. https://www.youtube.com/watch?v=QyMgNZHtdk8
- #1 rule of data storage – never just keep your data on one device. You are one dropped computer, one spilled glass of water, one unscrupulous thief away from losing all of your data. Every single day I go to Mom’s Café and see people leave their computers at their table while they go to the bathroom or grab a cup of coffee. LOCKSS - There should never just be one copy of your data. Do you backup your data? Most important data management task. NO less than two, preferably three copies of research data. How well are you covered against unexpected loss? Make sure that when disaster strikes, it isn’t a disaster
- There are three options for Personal computers and laptops – Convenient for storing your data while in use. Should not be used for storing master copies of your data. Networked drives – Highly recommended. You can share data. Your data is stored in a single place and backed up regularly. Available to you from any place at any time. If using a department drive or Box stored securing thereby minimizing the risk of loss, theft, or authorized access. BEST!!! External storage devices – thumb drives, flash drives, external hard drive. Cheap, easy to store and pass around. Feel better knowing it’s in your hands where you can see it. Not recommended for the long-term storage of your data.
- 3,2,1 – 3 copies in 2 physical locations, or more than one media.
- 1 TB free storage and an additional 50 GB if you are on a sponsored project. Free! Secure! When you leave you can take a copy with you or create a new account
- This is an example of social science research where the data are interview recording and transcripts.
- Another area of data management that you will have to consider is data archiving. Archiving is not the same thing as storage Archiving adds additional value to your data. Long-term preservation Metadata Sharable, usually through a persistent identifier Makes data citable
- There are lots of archiving options for your data. Some people choose to put their data on their website which is an option, but not a best practice.