double.weibull: Double Weibull functions

Description Usage Arguments Details See Also Examples

Description

There are different double weibull functions used in model fitting. Notice that for double.weibull.a, double.weibull.b and double.weibull.c there are extra balancers added to the original double weibull function shown in details.

Usage

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double.weibull(x, a1 = 0.14, b1 = 0.46, a2 = 0.86, b2 = 0.16, duration = 300)
double.weibull.a(x, a1 = 0.14, b1 = 0.46, a2 = 0.86, b2 = 0.16, duration = 300)
double.weibull.b(x, a1 = 0.14, b1 = 0.46, a2 = 0.86, b2 = 0.16, duration = 300)
double.weibull.c(x, a1 = 0.14, b1 = 0.46, a2 = 0.86, b2 = 0.16, duration = 300)

Arguments

x

The minutes within an STBS session, from 1-STBS_duration.

a1

The lambda_1 in the function described in details.

b1

The gamma_1 in the function described in details.

a2

The lambda_2 in the function described in details.

b2

The gamma_2 in the function described in details.

duration

STBS duration in minute.

Details

The basic double weibull function (double.weibull) is expressed as

S(t)=e^{≤ft[-λ_1 (t-1)^{γ_1}\right]}+e^{≤ft[-λ_2(L+1-t)^{γ_2}\right]}

See Also

weibull.

Examples

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curve(double.weibull, 1, 301, 10001, xlab="Minutes", ylab="Purity")
curve(double.weibull.a, 1, 301)
curve(double.weibull.b, 1, 301)
curve(double.weibull.c, 1, 301)

fzwaeustc/pcrfn documentation built on May 16, 2019, 4:06 p.m.