手法を比較

	意味的類似性	TF-IDF
分野	テキストマイニング	テキストマイニング
系統	Process / pipeline	Process / pipeline
提唱年	2019	1988
提唱者	Nils Reimers & Iryna Gurevych (Sentence-BERT)	Salton & Buckley
種類	NLP text-comparison task	Text vectorization / term-weighting scheme
原典	Reimers, N. & Gurevych, I. (2019). Sentence-BERT: Sentence Embeddings using Siamese BERT-Networks. EMNLP.	Salton, G. & Buckley, C. (1988). Term-weighting approaches in automatic text retrieval. Information Processing & Management, 24(5), 513-523.
別名	semantic textual similarity, text similarity, Anlamsal Benzerlik Analizi	term weighting, tf-idf weighting, TF-IDF Vektörizasyonu
関連	4	3
概要	Semantic similarity analysis measures how close in meaning two texts are, rather than how many words they share on the surface. Building on the Sentence-BERT work of Reimers and Gurevych (2019), it represents each text as a vector and compares those vectors so that paraphrases score high even when their wording differs.	TF-IDF, introduced by Salton and Buckley (1988), is a term-weighting scheme that scores each word in a document by how often it appears there and how rare it is across the whole collection. It turns raw text into weighted document vectors, giving high weight to terms that are frequent in one document but uncommon elsewhere.