I provide functions to calculate Gross Primary Productivity, Net Ecosystem Production, and Ecosystem Respiration from single station diurnal Oxygen curves.

Interface for data stream clustering algorithms implemented in the MOA (Massive Online Analysis) framework (Albert Bifet, Geoff Holmes, Richard Kirkby, Bernhard Pfahringer (2010). MOA: Massive Online Analysis, Journal of Machine Learning Research 11: 1601-1604).

Functions to access Twitter's filter, sample, and user streams, and to
    parse the output into data frames.

It contains functions to estimate multivariate Student's t dynamic and static regression models for given degrees of freedom and lag length. Users can also specify the trends and dummies of any kind in matrix form.
    Poudyal, N., and Spanos, A. (2022) <doi:10.3390/econometrics10020017>.
    Spanos, A. (1994) <http://www.jstor.org/stable/3532870>.

The stress addition approach is an alternative to the traditional
    concentration addition or effect addition models. It allows the modelling
    of tri-phasic concentration-response relationships either as single toxicant
    experiments, in combination with an environmental stressor or as mixtures of
    two toxicants. See Liess et al. (2019) <doi:10.1038/s41598-019-51645-4>
    and Liess et al. (2020) <doi:10.1186/s12302-020-00394-7>.

Traditional model evaluation metrics fail to capture model 
    performance under less than ideal conditions. This package employs 
    techniques to evaluate models "under-stress". This includes testing 
    models' extrapolation ability, or testing accuracy on specific 
    sub-samples of the overall model space. Details describing stress-testing 
    methods in this package are provided in 
    Haycock (2023) <doi:10.26076/2am5-9f67>. The other primary contribution of
    this package is provided to R users access to the 'Python' library 'PyCaret'
    <https://pycaret.org/> for quick and easy access to auto-tuned 
    machine learning models.

Forms queries to submit to the Cleveland Federal Reserve Bank web
    site's financial stress index data site.  Provides query functions for both
    the composite stress index and the components data. By default the download
    includes daily time series data starting September 25, 1991.  The functions
    return a class of either type easing or cfsi which contain a list of items
    related to the query and its graphical presentation.  The list includes the
    time series data as an xts object.  The package provides four lattice time
    series plots to render the time series data in a manner similar to the
    bank's own presentation.