DAISIE_ML1: Computes MLE for single type species under a clade specific...

View source: R/DAISIE_ML1.R

DAISIE_ML1R Documentation

Computes MLE for single type species under a clade specific scenario

Description

Computes MLE for single type species under a clade specific scenario

Usage

DAISIE_ML1(
  datalist,
  initparsopt,
  idparsopt,
  parsfix,
  idparsfix,
  idparsnoshift = 6:10,
  res = 100,
  ddmodel = 0,
  cond = 0,
  eqmodel = 0,
  x_E = 0.95,
  x_I = 0.98,
  tol = c(1e-04, 1e-05, 1e-07),
  maxiter = 1000 * round((1.25)^length(idparsopt)),
  methode = "lsodes",
  optimmethod = "subplex",
  CS_version = 1,
  verbose = 0,
  tolint = c(1e-16, 1e-10),
  island_ontogeny = NA,
  jitter = 0,
  num_cycles = 1
)

Arguments

datalist

Data object containing information on colonisation and branching times. This object can be generated using the DAISIE_dataprep function, which converts a user-specified data table into a data object, but the object can of course also be entered directly. It is an R list object with the following elements.
The first element of the list has two or three components:

$island_age - the island age
Then, depending on whether a distinction between types is made, we have:
$not_present - the number of mainland lineages that are not present on the island
or:
$not_present_type1 - the number of mainland lineages of type 1 that are not present on the island
$not_present_type2 - the number of mainland lineages of type 2 that are not present on the island

The remaining elements of the list each contains information on a single colonist lineage on the island and has 5 components:

$colonist_name - the name of the species or clade that colonized the island
$branching_times - island age followed by stem age of the population/species in the case of Non-endemic, Non-endemic_MaxAge species and Endemic species with no close relatives on the island. For endemic clades with more than one species on the island (cladogenetic clades/ radiations) these should be island age followed by the branching times of the island clade including the stem age of the clade
$stac - the status of the colonist

* Non_endemic_MaxAge: 1
* Endemic: 2
* Endemic&Non_Endemic: 3
* Non_Endemic: 4
* Endemic_Singleton_MaxAge: 5
* Endemic_Clade_MaxAge: 6
* Endemic&Non_Endemic_Clade_MaxAge: 7

$missing_species - number of island species that were not sampled for particular clade (only applicable for endemic clades)
$type1or2 - whether the colonist belongs to type 1 or type 2

initparsopt

The initial values of the parameters that must be optimized, they are all positive.

idparsopt

The ids of the parameters that must be optimized. The ids are defined as follows:

id = 1 corresponds to lambda^c (cladogenesis rate)
id = 2 corresponds to mu (extinction rate)
id = 3 corresponds to K (clade-level carrying capacity)
id = 4 corresponds to gamma (immigration rate)
id = 5 corresponds to lambda^a (anagenesis rate)
id = 6 corresponds to lambda^c (cladogenesis rate) for an optional subset of the species
id = 7 corresponds to mu (extinction rate) for an optional subset of the species
id = 8 corresponds to K (clade-level carrying capacity) for an optional subset of the species
id = 9 corresponds to gamma (immigration rate) for an optional subset of the species
id = 10 corresponds to lambda^a (anagenesis rate) for an optional subset of the species
id = 11 corresponds to p_f (fraction of mainland species that belongs to the second subset of species.

parsfix

The values of the parameters that should not be optimized.

idparsfix

The ids of the parameters that should not be optimized, e.g. c(1,3) if lambda^c and K should not be optimized.

idparsnoshift

For datatype = 'single' only: The ids of the parameters that should not be different between two groups of species; This can only apply to ids 6:10, e.g. idparsnoshift = c(6,7) means that lambda^c and mu have the same values for both groups.

res

Sets the maximum number of species for which a probability must be computed, must be larger than the size of the largest clade.

ddmodel

Sets the model of diversity-dependence:

ddmodel = 0 : no diversity dependence
ddmodel = 1 : linear dependence in speciation rate
ddmodel = 11: linear dependence in speciation rate and in immigration rate
ddmodel = 2 : exponential dependence in speciation rate
ddmodel = 21: exponential dependence in speciation rate and in immigration rate

cond

cond = 0 : conditioning on island age
cond = 1 : conditioning on island age and non-extinction of the island biota
. cond > 1 : conditioning on island age and having at least cond colonizations on the island. This last option is not yet available for the IW model

eqmodel

Sets the equilibrium constraint that can be used during the likelihood optimization. Only available for datatype = 'single'.

eqmodel = 0 : no equilibrium is assumed
eqmodel = 13 : near-equilibrium is assumed on endemics using deterministic equation for endemics and immigrants. Endemics must be within x_E of the equilibrium value
eqmodel = 15 : near-equilibrium is assumed on endemics and immigrants using deterministic equation for endemics and immigrants. Endemics must be within x_E of the equilibrium value, while non-endemics must be within x_I of the equilibrium value.

x_E

Sets the fraction of the equlibrium endemic diversity above which the endemics are assumed to be in equilibrium; only active for eqmodel = 13 or 15.

x_I

Sets the fraction of the equlibrium non-endemic diversity above which the system is assumed to be in equilibrium; only active for eqmodel = 15.

tol

Sets the tolerances in the optimization. Consists of:
reltolx = relative tolerance of parameter values in optimization
reltolf = relative tolerance of function value in optimization
abstolx = absolute tolerance of parameter values in optimization.

maxiter

Sets the maximum number of iterations in the optimization.

methode

Method of the ODE-solver. Supported Boost ODEINT solvers (steppers) are: "odeint::runge_kutta_cash_karp54" "odeint::runge_kutta_fehlberg78" "odeint::runge_kutta_dopri5" "odeint::bulirsch_stoer" without odeint::-prefix, deSolve{ode} method is assumed. The default method overall is "lsodes" for DAISIE_ML_CS() and "ode45" from ode() for DAISIE_ML_IW().

optimmethod

Method used in likelihood optimization. Default is 'subplex' (see 'subplex()' for full details). Alternative is "simplex" which was the method in previous versions.

CS_version

a numeric or list. Default is 1 for the standard DAISIE model, for a relaxed-rate model a list with the following elements:

  • model: the CS model to run, options are 1 for single rate DAISIE model, 2 for multi-rate DAISIE, or 0 for IW test model.

  • relaxed_par: the parameter to relax (integrate over). Options are "cladogenesis", "extinction", "carrying_capacity", "immigration", or "anagenesis".

verbose

A numeric vector of length 1, which in simulations and 'DAISIEdataprep()' can be '1' or '0', where '1' gives intermediate output should be printed. For ML functions a numeric determining if intermediate output should be printed. The default: '0' does not print, '1' prints the initial likelihood and the settings that were selected (which parameters are to be optimised, fixed or shifted), '2' prints the same as '1 and also the intermediate output of the parameters and loglikelihood, while '3' the same as '2' and prints intermediate progress during likelihood computation.

tolint

Vector of two elements containing the absolute and relative tolerance of the integration.

island_ontogeny

In DAISIE_sim_time_dep(), DAISIE_ML_CS and plotting a string describing the type of island ontogeny. Can be "const", "beta" for a beta function describing area through time.
In all other functions a numeric describing the type of island ontogeny. Can be 0 for constant, 1 for a beta function describing area through time. In ML functions island_ontogeny = NA assumes constant ontogeny. Time dependent estimation is not yet available as development is still ongoing. Will return an error if called in that case.

jitter

Numeric for optimizer(). Jitters the parameters being optimized by the specified amount which should be very small, e.g. 1e-5. Jitter when link{subplex}{subplex}() produces incorrect output due to parameter transformation.

num_cycles

The number of cycles the optimizer will go through. Default is 1.

Value

The output is a dataframe containing estimated parameters and maximum loglikelihood.

lambda_c

gives the maximum likelihood estimate of lambda^c, the rate of cladogenesis

mu

gives the maximum likelihood estimate of mu, the extinction rate

K

gives the maximum likelihood estimate of K, the carrying-capacity

gamma

gives the maximum likelihood estimate of gamma, the immigration rate

lambda_a

gives the maximum likelihood estimate of lambda^a, the rate of anagenesis

loglik

gives the maximum loglikelihood

df

gives the number of estimated parameters, i.e. degrees of feedom

conv

gives a message on convergence of optimization; conv = 0 means convergence


DAISIE documentation built on Oct. 22, 2023, 1:06 a.m.