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Answer the following questions:
1. What are the main text processing functionalities provided by the Natural Language Toolkit (NLTK)?
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2. How is Sentiment analysis used by companies in improving customer experience?
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3. What is sentence segmentation, and why is it important in the process of text analysis?
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4. Write a short note on Bag of Words.
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396 Touchpad Artificial Intelligence (Ver. 3.0)-X

