Create Correlation-Based Adjacency for GNN

Builds a feature adjacency matrix from correlation structure.

Usage

build_correlation_adjacency(
  data,
  method = "spearman",
  threshold = 0.7,
  sparse = TRUE
)

Arguments

data

Data matrix (samples x features)

method

Correlation method ("spearman", "pearson")

threshold

Minimum absolute correlation for edge (default: 0.7)

sparse

Return sparse matrix (default: TRUE)

Value

Adjacency matrix