Feature extraction by stochastic mds
seq2feature_mds_stochastic(seqs = NULL, K = 2,
dist_type = "oss_action", max_epoch = 100, step_size = 0.01,
pca = TRUE, tot = 1e-06, return_dist = FALSE, seed = 12345,
L_set = 1:3)
a "proc"
object or a square matrix. If a squared matrix is
provided, it is treated as the dissimilary matrix of a group of response processes.
the number of features to be extracted.
a character string specifies the dissimilarity measure for two response processes. See 'Details'.
the maximum number of epochs for stochastic gradient descent.
the step size of stochastic gradient descent.
a logical scalar. If TRUE
, the principal components of the
extracted features are returned.
the accuracy tolerance for determining convergence.
logical. If TRUE
, the dissimilarity matrix will be
returned. Default is FALSE
.
random seed.
length of ngrams considered.
seq2feature_mds_stochastic
returns a list containing
a numeric matrix giving the K
extracted features or principal
features. Each column is a feature.
the value of the multidimensional scaling objective function.
the dissimilary matrix. This element exists only if return_dist=TRUE
.