Description Usage Arguments Value Author(s) Examples
On the assumption that the two samples are already normalized to have L2 norm as 1, cosine distance is defined as 1 - inner product of the two samples.
1 | norm.sim.ksc(A, k, init.cen = NULL, init.mem = NULL, iter.max = 100)
|
A |
n by p matrix, each row is a sample |
k |
the number of clusters |
init.cen |
initial cluster centers |
init.mem |
initial cluster member assignment |
iter.max |
the maximum number of iteration |
A list will be returned with components : cluster: A vector of integers indicating the cluster to which each point is allocated. centers: A matrix of cluster centres size: The number of points in each cluster
Jungsuk Kwac
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | ###############
## test code
## 4 classes: a1,a2,a3,a4
## for each class, 20 samples
###############
n = 20; p = 32
a1 = 10*sin(0.1*(1:p))
a2 = 10*cos(0.1*(1:p))+10
a3 = c(1:(p/2),(p/2):1)
a4 = c((p/2):1,1:(p/2))
A = c()
for (i in 1:n){
A = rbind(A,a1+rnorm(p),a2+rnorm(p),a3+rnorm(p),a4+rnorm(p))
}
res = norm.sim.ksc(quick.norm(A,1),4)
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