Josa in Korean is often determined by judging the previous word. 
            When writing reports using Rmd, a function that prints the 
            appropriate investigation for each case is helpful. 
            The 'josaplay' package then evaluates the previous word 
            to determine which josa is appropriate.

Read and write JSON Web Keys (JWK, rfc7517), generate and verify JSON
    Web Signatures (JWS, rfc7515) and encode/decode JSON Web Tokens (JWT, rfc7519)
    <https://datatracker.ietf.org/wg/jose/documents/>. These standards provide 
    modern signing and encryption formats that are natively supported by browsers
    via the JavaScript WebCryptoAPI <https://www.w3.org/TR/WebCryptoAPI/#jose>, 
    and used by services like OAuth 2.0, LetsEncrypt, and Github Apps.

Reproducible work requires a record of where every statistic originated.
    When writing reports, some data is too big to load in the same environment and some statistics take a while to compute.
    This package offers a way to keep notes on statistics, simple functions, and small objects.
    Notepads can be locked to avoid accidental updates.
    Notepads keep track of who added the notes and when the notes were added.
    A simple text representation is used to allow for clear version histories.

Since the reference management software (such as 'Zotero', 'Mendeley') exports Bib file journal abbreviation is not detailed enough, the 'journalabbr' package only abbreviates the journal field of Bib file, and then outputs a new Bib file for generating reference format with journal abbreviation on other software (such as 'texstudio'). The abbreviation table is from 'JabRef'. At the same time, 'Shiny' application is provided to generate 'thebibliography', a reference format that can be directly used for latex paper writing based on 'Rmd' files.

Implements under/oversampling for probability estimation.  To be
    used with machine learning methods such as AdaBoost, random forests, etc.

Tool for diagnosing table joins. It combines the speed of `collapse`
     and `data.table`, the flexibility of `dplyr`, and the diagnosis and features 
     of the `merge` command in `Stata`.