A guide to using Jabref and Org-mode to search, store, and summarise published literature

Written on May 16, 2015

This is updated from my previous post here.

Contents:


I wrote this post to mainly externalize my memory, but also because I believe it’s important to make it public how a typical workflow looks like for a researcher. This helps not only the person writing the post (now I can always refer back to this post to remember how the workflow is if I ever forget), but it also helps those new to do research and who don’t know how or where to start, what is an efficient way of doing things, and what some best practices are. It was difficult for me when I first started and I also had a hard time finding out how others do it since there are few, if any, resources for how to exactly do your reference searches, storage, management, and review. Writing up how your workflow is (for anything really, not just reference management/reviews) also makes it more systematic and thus more replicable.

For some other helpful resources, see here, here, here, or here). You can also see how I lay out my files and folders on my GitHub bibliography repo

Applications I use

I use the following applications for this guide and for my own lit searches:

JabRef is a reference manager that uses the BibTeX format to store references. I use pandoc and markdown to create my manuscripts and/or reports so I need a program that can read .bib files. The nice thing about JabRef is that all the customizations and editting of the references are done to the .bib reference file, which means that edits and formatting I do to the .bib file is independent of the computer. JabRef is also cross-platform, which is important for me since I use Linux.

Now I know that JabRef has a section to keep notes, however, these notes are really only assessible via selecting the article and moving to the “Reveiw” tab. I’ve also gotten very comfortable to whizzing through a text file using Emacs and Vim-keybindings (it makes me much more productive), and JabRef just doesn’t have those capabilities. Combined with the keybindings, Emac’s Org-mode is an extremely powerful tool for organizing notes. So I use Org-mode to summarize and take notes on articles that I’m reading.

Originally I used Docear as well, however it really started to interrupt my workflow, change my reference database occasionally because integrates with JabRef version 2.7 while I use JabRef version 2.10 and strange things sometimes happen. Docear also didn’t fit into my ‘plain text-use emacs with vim keybindings-keep things lean’ workflow as Docear tries to be too many things without being good as any one of them. So I replaced Docear for Org-mode to take notes and summarize articles.

I have structured this guide into two parts:

  1. A brief, concise guide.
  2. A detailed, descriptive guide.

Brief step-by-step guide

  1. Develop search terms, using PubMed and MeSH to refine (Include into the org-mode searches.org file)
  2. Use the terms in the “Web Search” field in JabRef
  3. Compare and record number of hits between PubMed and JabRef
    • If JabRef’s Web Search complains or the hits are different, use PubMed to output to XML and import into JabRef (Ctrl+I)
  4. Sort hits by year
  5. Search through and select relevant articles, checking for duplicates
  6. Import into database
  7. Select all imported articles and add relevant keywords using “Edit -> Manage keywords”
  8. Run “Tools -> Clean up entries”
  9. Delete Month, Note, File, Institution fields using “Search -> Set/clear/rename fields”
  10. Mark entries based on priority and relevance to project (Ctrl-M; darker = most relevant)
  11. Read through the article and record comments in the notes.org file
  12. After reading the article, make a note that it was read in JabRef and record important information into tables in the tables.org file so that the notes are briefly summarized and articles can be quickly scanned for information

Detailed step-by-step guide

A. Firefox (or other browser)

  1. Develop a priori search terms for searching PubMed or other article search engine.
  2. Use PubMed and MeSH to refine the terms to capture an appropriate and relevant number of articles. - Obviously too many or too few articles are never a good thing.
  3. Using the search terms, run a search of PubMed and check the number of hits the search terms retrieved.
  4. Record the number of hits in a plain text file (eg. searches.org) or some other location, preferably in the your bibliography directory or in your directory where you will write your research manuscript.

B. JabRef — Use your master .bib file, or create a new reference database

— Article search and selection

  1. Paste the search terms developed above into the Web Search plugin/utility (usually on the sidepane), using Medline as the search engine, and hit the Fetch button.
  2. Check the number of hits and compare to the hits from the PubMed search.
  3. Record date of search and number of hits somewhere, preferably in the same directory as your research project.
    • Sometimes, the Web Search doesn’t like some of the search terms and just doesn’t search using them. This can result in differences in the number of hits. In this case, search using PubMed (more reliable) and output the search results into XML via the “Send to: -> File -> XML” option below/near the “Search” and “Filters:” buttons. Import the XML into JabRef using Ctrl-I.
  4. Sort results by year.
  5. Search through articles, selecting (checking the check box) only relevant onces to be imported; check for duplicates.
  6. Import into the current database (or a new one).

— Cleaning the imported files

  1. Select all the imported references, go to the Edit menu at the top, and click Manage keywords.
  2. Add appropriate keywords, for instance topics that the articles represent (e.g. Diabetes), the relevant project that the articles are linked to (e.g. course assignment or manuscript), or any other descriptive keywords.
  3. Under the Tools menu, click Clean up entries. Sometimes the articles have been messily imported and this will clean it up.
  4. In the Search menu, click Set/clear/rename fields; type in Month, Note, File, Institution at the top of the dialog box, select the Clear fields option, and click OK.

— Marking by importance and downloading pdf

  1. Search through articles and based on their title and abstract, mark (Ctrl-M in JabRef) the articles according to how relevant the article is and how soon the article should be read. The darker the colour, the more relevant it is.

3. Org-mode — Read the article and record notes

  1. Reading through the article, use org-mode to write up notes and comments in the notes.org file about the article that may be important for your particular project. Using org-mode allows easy text ‘folding’ (hiding text between headings), which makes navigation and searching easier.
    • Use org-heading level 1 (*) for a keyword specific to the project (eg. Diabetes and Exercise).
    • Use org-heading level 2 (**) for the author and year (eg. Smith2015).

    Example file:

     #+TITLE: Note taking for reading journal articles
     #+AUTHOR: Luke W. Johnston
        
     A keyword relating to the main objective/project should be used for
     the first heading (*), for instance 'Project: FA and Diabetes'.
    
     Each bibkey (AuthorYear, eg. Johnston2013) should have it's own header
     (* or **).
        
     * Project: FA and Diabetes
     ** Smith2015
     Comments on article
        
     ** Cameron2012
     Comments on article
    
  2. Once finished reading the article, make a note that it has been read in the JabRef file under the ‘Review’ tab.
  3. Go into the tables.org and make a new row in the org-table. Record some simple, but important, aspects of the article so that it is easier to quickly scan the articles you’ve read. Creating tables in org-mode is very easy (much is done for you), and these tables can be exported into markdown, LaTeX, pdf, docx, etc, which makes this a very useful feature of org-mode.
    • Use org-heading level 1 (*) for a keyword specific to the project (eg. Cardiovascular disease and diet).
    • Use org-heading level 2 (**) to describe the table within (eg. ‘Study methods’ or ‘Findings’ or ‘Model covariates’).

    Example file:

     #+TITLE: 
     #+AUTHOR: 
     #+DATE: 
     #+OPTIONS: toc:nil
     #+LaTeX_CLASS_OPTIONS: [landscape, 9pt, letterpaper]
     #+LaTeX_HEADER:\usepackage[margin=0.50in]{geometry}
     #+LaTeX_HEADER:\usepackage{booktabs}
        
     # NOTE: This file is for creating summary tables from reviewing the
     # literature, to put them into a more easily digested format. 
        
     # A keyword relating to the main objective/project should be used for
     # the first heading (*), for instance 'Project: FA and Diabetes'.
        
     # Further keywords as sub-headings can be used to describe the table
     # within.
    
     * Project: FA and Diabetes
        
     ** Study summary
        
     #+ATTR_LATEX: :center :booktabs :rmlines
     | Author | Year | Design | Country |   N | Outcome  | Exposure   |
     |--------+------+--------+---------+-----+----------+------------|
     | Smith  | 2015 | X-sec  | Canada  | 100 | Diabetes | Fatty acid |
     |        |      |        |         |     |          |            |
    

    The LaTeX org-mode tags are used when telling org-mode to create a pdf of the tables.

Final comments

That is all for now. Writing this helps me to remember my workflow and I hope that in some way it helps others too!