Provides comprehensive tools for extracting and analyzing scientific 
    content from PDF documents, including citation extraction, reference matching, 
    text analysis, and bibliometric indicators. Supports multi-column PDF layouts,
    'CrossRef' API <https://www.crossref.org/documentation/retrieve-metadata/rest-api/> integration, and advanced citation parsing.

An interface for creating, registering, and resolving content-based
             identifiers for data management. Content-based identifiers rely on
             the 'cryptographic' hashes to refer to the files they identify, thus,
             anyone possessing the file can compute the identifier using a 
             well-known standard algorithm, such as 'SHA256'.  By registering
             a URL at which the content is accessible to a public archive (such as 
             Hash Archive) or depositing data in a scientific repository such 'Zenodo',
             'DataONE' or 'SoftwareHeritage', the content identifier can serve 
             many functions typically associated with A Digital Object Identifier
             ('DOI').  Unlike location-based identifiers like 'DOIs', content-based
             identifiers permit the same content to be registered in many locations.

A fast, flexible and transparent framework to estimate context-specific word and short document embeddings using the 'a la carte' 
    embeddings approach developed by Khodak et al. (2018) <doi:10.48550/arXiv.1805.05388> and evaluate hypotheses about covariate effects on embeddings using 
    the regression framework developed by Rodriguez et al. (2021)<doi:10.1017/S0003055422001228>. New version of the package applies a new estimator to measure the distance between word embeddings as described in Green et al. (2025) <doi:10.1017/pan.2024.22>.

Search across R files with contextual results, highlights and clickable links. Includes an add-in for further workflow enhancement.

Various utilities for evaluating continued fractions.

Converts numbers to continued fractions and back again. A solver for Pell's Equation is provided.  The method for calculating roots in continued fraction form is provided without published attribution in such places as Professor Emeritus Jonathan Lubin, <http://www.math.brown.edu/jlubin/> and his post to StackOverflow, <https://math.stackexchange.com/questions/2215918> , or Professor Ron Knott, e.g., <https://r-knott.surrey.ac.uk/Fibonacci/cfINTRO.html> .