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Evaluate hyperparameter stability grid for door pooling

tma_stability_grid.Rd

Computes pairwise trajectory distance matrices across a grid of lookback sizes or alpha values, then computes the matrix correlation between adjacent parameter settings to find the "elbow" where trajectories stabilize.

Usage

tma_stability_grid(
  accum,
  unit_col,
  time_col,
  param_type = c("lookback", "ema"),
  param_values = NULL,
  x_col = NULL,
  y_col = NULL,
  max_degree = 3L
)

Arguments

accum

Object from tma::accumulate().

unit_col

Name of column identifying unit/speaker.

time_col

Name of column identifying monotonic time.

param_type

"lookback" or "ema".

param_values

Numeric vector of parameter values to evaluate.

x_col

Column name for x coordinate (default auto).

y_col

Column name for y coordinate (default auto).

max_degree

Polynomial degree for trajectory curves (default 3).

Value

Data frame of parameter values and stability correlations.