Nothing
#' @title Modules for Stochastic Individual Contact Models
#'
#' @description
#' Stochastic individual contact models of infectious disease simulate epidemics
#' in which contacts between individuals are instantaneous events in discrete
#' time. They are intended to be the stochastic microsimulation analogs to
#' deterministic compartmental models.
#'
#' The \code{\link{icm}} function handles both the simulation tasks. Within this
#' function are a series of modules that initialize the simulation and then
#' simulate new infections, recoveries, and vital dynamics at each time step. A
#' module also handles the basic bookkeeping calculations for disease
#' prevalence.
#'
#' Writing original ICMs will require modifying the existing modules or
#' adding new modules to the workflow in \code{\link{icm}}. The existing modules
#' may be used as a template for replacement or new modules.
#'
#' This help page presents a brief overview of the module functions in the order
#' in which they are used within \code{\link{icm}}, in order to help guide users
#' in writing their own module functions. These module functions are not shown
#' on the help index since they are not called directly by the end-user. To
#' understand these functions in more detail, review the separate help pages
#' listed below.
#'
#' @section Initialization Module:
#' This function sets up agent attributes, like disease status, on the network
#' at the starting time step of disease simulation, \eqn{t_1}. For
#' multiple-simulation function calls, these are reset at the beginning of each
#' simulation.
#' \itemize{
#' \item \code{\link{initialize.icm}}: sets which agents are initially
#' infected, through the initial conditions passed in
#' \code{\link{init.icm}}.
#' }
#'
#' @section Disease Status Modification Modules:
#' The main disease simulation occurs at each time step given the current state
#' of the population at that step. Infection of agents is simulated as a
#' function of disease parameters and population composition. Recovery of agents
#' is likewise simulated with respect to infected nodes. These functions also
#' analyze the flows for summary measures such as disease incidence.
#' \itemize{
#' \item \code{\link{infection.icm}}: randomly draws an edgelist given the
#' parameters, subsets the list for discordant pairs, and simulates
#' transmission on those discordant pairs through a series of draws from
#' a binomial distribution.
#' \item \code{\link{recovery.icm}}: simulates recovery from infection either
#' to a lifelong immune state (for SIR models) or back to the susceptible
#' state (for SIS models), as a function of the recovery rate specified
#' in the \code{rec.rate} parameter. The recovery rate may vary for
#' two-group models.
#' }
#'
#'
#' @section Demographic Modules:
#' Vital dynamics such as arrival and departure processes are simulated at each
#' time step to update entries into and exits from the population. These are
#' used in open-population ICMs.
#' \itemize{
#' \item \code{\link{departures.icm}}: randomly simulates departures or exits
#' for agents given the departure rate specified in the disease-state and
#' group-specific departure parameters in \code{\link{param.icm}}. This
#' involves deactivating agents from the population, but their historical
#' data is preserved in the simulation.
#' \item \code{\link{arrivals.icm}}: randomly simulates new arrivals into the
#' population given the current population size and the arrival rate
#' parameters. This involves adding new agents into the population.
#' }
#'
#'
#' @section Bookkeeping Module:
#' Simulations require bookkeeping at each time step to calculate the
#' summary epidemiological statistics used in the model output analysis.
#' \itemize{
#' \item \code{\link{prevalence.icm}}: calculates the number in each disease
#' state (susceptible, infected, recovered) at each time step for those
#' active agents in the population.
#' }
#'
#'
#' @name modules.icm
#' @aliases modules.icm
#'
NULL
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.