cosine_similarity: Vector cosine similarity

In diogocamacho/druid: Drug Indication Discoverer

Description

Returns the cosine similarity between 2 vectors

Usage

cosine_similarity(query_vector, tfidf_matrix, tfidf_crossprod_mat)

Arguments

query_vector	A vector to compare to the tf-idf matrix. Length of vector is equal to number of columns of tf-idf matrix
tfidf_matrix	Sparse tf-idf matrix (computed from ctfidf)
tfidf_crossprod_mat	The cross-product matrix for the tf-idf matrix (computed with crossprod_matrix)

Value

Cosine similarity between query vector and each *row* in tf-idf matrix

diogocamacho/druid documentation built on Sept. 17, 2020, 12:39 p.m.