sSolver: Negative Poisson Log-Likelihood

Description Usage Arguments Details Value See Also Examples

Description

Solver for the negative Poisson log-likelihood

Usage

1
sSolver(z, a, extra)

Arguments

z

Vector containing observed response

a

Matrix with active constraints

extra

List with element y containing the observed response vector

Details

This function is called internally in activeSet by setting mySolver = sSolver.

Value

x

Vector containing the fitted values

lbd

Vector with Lagrange multipliers

f

Value of the target function

gx

Gradient at point x

See Also

activeSet

Examples

1
2
3
4
5
6
##Minimizing Poisson log-liklihood
set.seed(12345)
yp <- rpois(9,5)
Atot <- cbind(1:8, 2:9)     ##Matrix defining isotonicity (total order)
x0 <- 1:9                   ##starting values
fit.poi <- activeSet(Atot, sSolver, x0 = x0, y = yp)

isotone documentation built on May 1, 2019, 7:34 p.m.