Estep.tk {MFDA} | R Documentation |
Compute the cluster proportion in the expectation step of EM algorithm for functional mixture models.
Estep.tk(x, old, nclust)
x |
A numeric matrix, or data frame of observations, rows
correspond to functional observations and columns correspond
to the number of repeated measurements.
|
old |
The list of output from maximization step of EM algorithm. |
nclust |
The number of clusters (componenets in mixture model). |
A list including the following components:
clust |
A vector whose ith entry is the indicator value of the ith observation belonging to the kth component of the mixture. |
tk |
A matrix whose [i,k] th entry is the conditional probability
of the ith observation belonging to the kth component
of the mixture.
|
loglikelihood |
The negative logliklihood for the data in the mixture model. |
Ma, P., Castillo-Davis, C., Zhong, W., and Liu, J. S. (2006) A data-driven clustering method for time course gene expression data, Nucleic Acids Research, 34 (4), 1261-1269.