เปรียบเทียบวิธี

	ความหลากหลายของคำศัพท์	การวิเคราะห์ความรู้สึก	การสร้างแบบจำลองหัวข้อ (Topic Modeling)
สาขาวิชา	การทำเหมืองข้อความ	การทำเหมืองข้อความ	การเรียนรู้เชิงลึก
ตระกูล	Process / pipeline	Process / pipeline	Machine learning
ปีกำเนิด	—	—	1999–2003
ผู้ริเริ่ม	—	—	Hofmann, T. (pLSA, 1999); Blei, D. M., Ng, A. Y., & Jordan, M. I. (LDA, 2003)
ประเภท	Text quantification / lexical richness measurement	NLP text-classification task	Unsupervised generative probabilistic model
แหล่งต้นตำรับ	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.	Pang, B. & Lee, L. (2008). Opinion Mining and Sentiment Analysis. Foundations and Trends in Information Retrieval, 2(1-2), 1-135.	Blei, D. M., Ng, A. Y., & Jordan, M. I. (2003). Latent Dirichlet Allocation. Journal of Machine Learning Research, 3, 993–1022.
ชื่อเรียกอื่น	lexical richness, vocabulary richness, Sözcüksel Çeşitlilik Analizi	opinion mining, polarity detection, duygu analizi	Latent Semantic Analysis, probabilistic topic modeling, topic discovery, thematic modeling
ที่เกี่ยวข้อง	3	3	5
สรุป	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.	Sentiment analysis, also called opinion mining, is a natural-language-processing task that detects the emotional tone of text — typically classifying it as positive, negative, or neutral. It turns unstructured opinion text into structured, quantifiable polarity signals using one of three families of approaches: sentiment lexicons, trained machine-learning classifiers, or pretrained transformer models.	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.