General Non-linear Optimization Using Augmented Lagrange Multiplier Method.

A comprehensive R API for querying Apache Solr databases.
             A Solr core is represented as a data frame or list that
             supports Solr-side filtering, sorting,
             transformation and aggregation, all through the familiar
             base R API. Queries are processed
             lazily, i.e., a query is only sent to the database when
             the data are required.

Somoclu is a massively parallel implementation of self-organizing maps.  It exploits multicore CPUs and it can be accelerated by CUDA. The topology of the map can be planar or toroid and the grid of neurons can be rectangular or hexagonal . Details refer to (Peter Wittek, et al (2017)) <doi:10.18637/jss.v078.i09>.

Toolbox with 'shiny' applications for widely used psychometric
    methods. Those methods include following analysis: Item analysis, item response theory calibration, principal component analysis,
    confirmatory factor analysis - structural equation modeling, generating simulated data.
    References:
    Chalmers (2012, <doi:10.18637/jss.v048.i06>);
    Revelle (2022, <https://CRAN.R-project.org/package=psych Version = 2.2.9.>);
    Rosseel (2012, <doi:10.18637/jss.v048.i02>);
    Magis & Raiche (2012, <doi:10.18637/jss.v048.i08>);
    Magis & Barrada (2017, <doi:10.18637/jss.v076.c01>).

Minimally adjust the values of numerical records in a data.frame, such
    that each record satisfies a predefined set of equality and/or inequality
    constraints. The constraints can be defined using the 'validate' package. 
    The core algorithms have recently been moved to the 'lintools' package,
    refer to 'lintools' for a more basic interface and access to a version
    of the algorithm that works with sparse matrices.

Wrapper for the 'RSpace' Electronic Lab Notebook (<https://www.researchspace.com/>)
    API. This packages provides convenience functions to browse, search, create,
    and edit your 'RSpace' documents. In addition, it enables filling 'RSpace' templates
    from R Markdown/Quarto templates or tabular data (e.g., 'Excel' files).
    This R package is not developed or endorsed by 'Research Space'.