R/utils-embedding-matrices.R
find_projection.Rd
"Project" each word in a word embedding matrix of \(D\) dimension along a
vector of \(D\) dimensions, extracted from the same embedding space.
The vector can be a single word, or a concept vector obtained from
get_centroid()
, get_direction()
, or get_regions()
.
find_projection(wv, vec)
Matrix of word embedding vectors (a.k.a embedding model) with rows as words.
Vector extracted from the embeddings
A new word embedding matrix, each row of which is parallel to vector.
All the vectors in the matrix \(A\) are projected onto the a vector, \(v\), to find the projection matrix, \(P\), defined as: $$P = \frac{A \cdot v}{v \cdot v} * v$$