Bayesian estimation of forced choice models in Item Response Theory using 'rstan' (See Stan Development Team (2020) <https://mc-stan.org/>).

A financial calculator that provides very fast implementations
    of common financial indicators using 'Rust' code. It includes functions for
    bond-related indicators, such as yield to maturity ('YTM'), modified duration,
    and Macaulay duration, as well as functions for calculating time-weighted
    and money-weighted rates of return (using 'Modified Dietz' method) for multiple portfolios,
    given their market values and profit and loss ('PnL') data. 'fcl' is designed
    to be efficient and accurate for financial analysis and computation. The methods
    used in this package are based on the following references:
    <https://en.wikipedia.org/wiki/Modified_Dietz_method>,
    <https://en.wikipedia.org/wiki/Time-weighted_return>.

Algorithms for fuzzy clustering, cluster validity indices and plots for cluster validity and visualizing fuzzy clustering results.

Provides a selection of 3 different inference rules (including additionally the clamped types of the referred inference rules) and 4 threshold functions in order to obtain the inference of the FCM (Fuzzy Cognitive Map). Moreover, the 'fcm' package returns a data frame of the concepts' values of each state after the inference procedure. Fuzzy cognitive maps were introduced by Kosko (1986) <doi:10.1002/int.4550010405> providing ideal causal cognition tools for modeling and simulating dynamic systems.

Provides several functions to create and manipulate fuzzy
    cognitive maps. It is based on 'FCMapper' for Excel, distributed at <http://
    www.fcmappers.net/joomla/>, developed by Michael Bachhofer and Martin Wildenberg.
    Maps are inputted as adjacency matrices. Attributes of the maps and the
    equilibrium values of the concepts (including with user-defined constrained
    values) can be calculated. The maps can be graphed with a function that calls
    'igraph'. Multiple maps with shared concepts can be aggregated.