Score one coordinate against fixed responsibilities (Gamma) for csmoothEM (internal)

Convenience wrapper used in greedy partitioning. Returns both the scalar score and a 1D fitted object (one) that can be appended to csmooth-style parameters.

score_one_coord_csmooth(
  X,
  j,
  Gamma,
  Q_K,
  rw_q = 2,
  score_mode = c("ml", "none"),
  relative_lambda = TRUE,
  lambda_min = 1e-10,
  lambda_max = 1e+10
)

Arguments

X

Numeric matrix (n x d).

j

Integer coordinate index in 1:d.

Gamma

Numeric matrix (n x K) of responsibilities.

Q_K

Numeric matrix (K x K) base RW precision (lambda=1).

rw_q

Integer \(\ge 0\). Rank deficiency along K.

score_mode

One of "ml" or "none".

relative_lambda

Logical.

lambda_min, lambda_max

Bounds for lambda optimization (used when score_mode="ml").

Value

A list with:

• score: scalar score for coordinate j.

• one: list with mu_vec (length K) and sigma2 (scalar).