So sánh phương pháp

	Độ đa dạng từ vựng	Topic Modeling (Mô hình hóa chủ đề)
Lĩnh vực	Khai phá văn bản	Học sâu
Họ	Process / pipeline	Machine learning
Năm ra đời	—	1999–2003
Người khởi xướng	—	Hofmann, T. (pLSA, 1999); Blei, D. M., Ng, A. Y., & Jordan, M. I. (LDA, 2003)
Loại	Text quantification / lexical richness measurement	Unsupervised generative probabilistic model
Công trình gốc	McCarthy, P. M. & Jarvis, S. (2010). MTLD, vocd-D, and HD-D: A validation study of sophisticated approaches to lexical diversity assessment. Behavior Research Methods, 42(2), 381-392.	Blei, D. M., Ng, A. Y., & Jordan, M. I. (2003). Latent Dirichlet Allocation. Journal of Machine Learning Research, 3, 993–1022.
Tên gọi khác	lexical richness, vocabulary richness, Sözcüksel Çeşitlilik Analizi	Latent Semantic Analysis, probabilistic topic modeling, topic discovery, thematic modeling
Liên quan	3	5
Tóm tắt	Lexical diversity analysis quantifies how varied the vocabulary of a text is — how rich an author's word choice is — using measures such as the type-token ratio (TTR), MTLD, vocd-D, and Yule's K. The MTLD and vocd-D measures were validated by McCarthy and Jarvis (2010), building on earlier work by Tweedie and Baayen (1998) on the stability of lexical-richness measures.	Topic Modeling is a family of unsupervised probabilistic techniques for discovering latent thematic structure in large text collections. By learning which words tend to co-occur, models such as Latent Dirichlet Allocation (LDA) automatically surface coherent topics — each represented as a distribution over vocabulary — without requiring labelled data.