Calculate embedding drift between two graphs

Aligns the embedding of graph 2 onto the reference embedding of graph 1 via orthogonal Procrustes, then computes per-node cosine similarities as a measure of context drift. Nodes shared between both graphs receive a cosine similarity in [-1, 1]. Nodes exclusive to graph 1 are assigned -1.1 and nodes exclusive to graph 2 are assigned +1.1 as sentinel values indicating absence rather than a computed similarity.

Usage

calculate_drift(object)

Arguments

object

An EmbedDrift object, see EmbedDrift().

Value

The EmbedDrift object with aligned_embd and stats populated. stats is a data.table with columns node, cosine_similarity, and node_status ("shared", "g1_only", "g2_only").