NLP是AI最活跃的领域之一。本文从基础到实战全面介绍。 ## 文本预处理 ```python import jieba tokens = jieba.lcut('自然语言处理很有趣') ``` ## 文本分类 ```python from sklearn.feature_extraction.text import TfidfVectorizer from sklearn.linear_model import LogisticRegression pipeline = Pipeline([ ('tfidf', TfidfVectorizer(max_features=10000)), ('clf', LogisticRegression()), ]) ``` ## HuggingFace Transformers ```python from transformers import pipeline classifier = pipeline("sentiment-analysis", model="bert-base-chinese") result = classifier("这部电影很好看") ``` NLP的发展日新月异,大语言模型正在重新定义这个领域。