Internal implementation of SNF algorithm for multi-omics data integration.
Computes an affinity matrix using local Gaussian kernel.
Usage
snf_affinity_matrix(diff, K = 20, sigma = 0.5)
Arguments
- diff
Distance matrix (squared Euclidean distances).
- K
Number of nearest neighbors for local scaling (default: 20).
- sigma
Variance for local model (default: 0.5).
Value
Affinity matrix with exponential similarity.
References
Wang B, et al. Similarity Network Fusion for Aggregating Data Types
on a Genomic Scale. Nat Methods. 2014;11(3):333-337.
Wang B, et al. Nat Methods. 2014 - Equation in Methods section