Implements the adaptive sampling procedure, a framework for both positive unlabeled learning and learning with class label noise. Yang, P., Ormerod, J., Liu, W., Ma, C., Zomaya, A., Yang, J. (2018) <doi:10.1109/TCYB.2018.2816984>.

Implements the adaptive smoothing spline estimator for the function-on-function linear regression model described in Centofanti et al. (2023) <doi:10.1007/s00180-022-01223-6>.

Provides a developer-facing interface to 'Arrow' Database
  Connectivity ('ADBC') for the purposes of driver development, driver
  testing, and building high-level database interfaces for users. 'ADBC'
  <https://arrow.apache.org/adbc/> is an API standard for database access
  libraries that uses 'Arrow' for result sets and query parameters.

Provides a developer-facing interface to the 'Arrow' Database
  Connectivity ('ADBC') 'PostgreSQL' driver for the purposes of building high-level
  database interfaces for users. 'ADBC' <https://arrow.apache.org/adbc/> is
  an API standard for database access libraries that uses 'Arrow' for result
  sets and query parameters.

Provides a developer-facing interface to the 'Arrow' Database
  Connectivity ('ADBC') 'SQLite' driver for the purposes of building high-level
  database interfaces for users. 'ADBC' <https://arrow.apache.org/adbc/> is
  an API standard for database access libraries that uses 'Arrow' for result
  sets and query parameters.

In order to make Arrow Database Connectivity ('ADBC' <https://arrow.apache.org/adbc/>) accessible from R, an interface compliant with the 'DBI' package is provided, using driver back-ends that are implemented in the 'adbcdrivermanager' framework. This enables interacting with database systems using the Arrow data format, thereby offering an efficient alternative to 'ODBC' for analytical applications.

Calculates some antecedent discharge conditions useful in
    water quality modeling. Includes methods for calculating flow
    anomalies, base flow, and smooth discounted flows from daily flow
    measurements. Antecedent discharge algorithms are described and
    reviewed in Zhang and Ball (2017) <doi:10.1016/j.jhydrol.2016.12.052>.