# ------------------------------------------------ # CITATION.cff file created with {cffr} R package # See also: https://docs.ropensci.org/cffr/ # ------------------------------------------------ cff-version: 1.2.0 message: 'To cite package "tsgc" in publications use:' type: software license: GPL-3.0-or-later title: 'tsgc: Time Series Methods Based on Growth Curves' version: 2.0.0 doi: 10.32614/CRAN.package.tsgc abstract: Provides tools for modelling and forecasting epidemic trajectories using a dynamic Gompertz model within a state space framework, with the Kalman filter for robust estimation of non-linear growth. Includes a reinitialization feature to adapt to new waves, and a leading-indicator extension that uses a related series moving ahead of the variable of interest (e.g. cases ahead of hospitalisations) to improve short-horizon forecasts, with model and lag selection via rolling-origin cross-validation. Applicable to data at daily, monthly, quarterly, or annual frequency, and to non-epidemic trajectories with similar dynamics, such as innovation diffusion and product adoption. Includes functions for data preprocessing, model fitting, forecast visualization, and accuracy evaluation using standard error measures. Methods are described in Harvey and Kattuman (2020) , Harvey and Kattuman (2021) , and Ashby, Harvey, Kattuman, Tang, and Thamotheram (2024) . authors: - family-names: Ashby given-names: Michael email: mwa22@cam.ac.uk - family-names: Kattuman given-names: Paul email: p.kattuman@jbs.cam.ac.uk - family-names: Harvey given-names: Andrew email: ach34@cam.ac.uk - family-names: Tang given-names: Edwin email: yiu-nam-edwin.tang@warwick.ac.uk - family-names: Thamotheram given-names: Craig email: cpthamotheram@yahoo.co.uk - family-names: Secchi given-names: Guglielmo email: ggas2@cam.ac.uk repository: https://edwintang903.r-universe.dev repository-code: https://github.com/edwintang903/tsgc commit: 02b7bbba8a444cac24376bb6c7fd0cfd8ed74e7e url: https://github.com/edwintang903/tsgc date-released: '2026-09-01' contact: - family-names: Ashby given-names: Michael email: mwa22@cam.ac.uk