方法对比

	文本规范化	词性标注（POS Tagging）
领域	文本挖掘	文本挖掘
方法族	Process / pipeline	Process / pipeline
起源年份	—	—
提出者	—	—
类型	NLP preprocessing pipeline	NLP sequence-labelling task
开创性文献	Baldwin, T. & Li, Y. (2015). An In-depth Analysis of the Effect of Text Normalization in Twitter. NAACL-HLT 2015.	Ratnaparkhi, A. (1996). A Maximum Entropy Model for Part-Of-Speech Tagging. EMNLP.
别名	Metin Normalleştirme, noisy-text normalization, text standardisation, lexical normalisation	part-of-speech tagging, grammatical tagging, Sözcük Türü Etiketleme (POS Tagging)
相关	3	3
摘要	Text normalization is an NLP preprocessing pipeline that converts noisy, abbreviated, or misspelled text — such as SMS messages, social-media posts, and OCR output — into a clean, standardised form. It is a prerequisite step for virtually every downstream NLP task, ensuring that inconsistent surface forms do not degrade tokenisation, parsing, or classification. The method gained systematic academic treatment through Baldwin and Li (2015) and Sproat and Jaitly (2017).	Part-of-speech tagging assigns a grammatical category label — noun, verb, adjective, and so on — to every word in a text. It is a foundational natural-language-processing task, formalised as a statistical model by Ratnaparkhi (1996) and packaged into widely used toolkits such as Stanford CoreNLP (Manning et al., 2014), and it serves as a preliminary step for syntactic analysis and information extraction.