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Learn Tokenization | Identifying the Most Frequent Words in Text
Identifying the Most Frequent Words in Text

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Tokenization

Tokenization is a fundamental step in natural language processing, involving the division of text into individual words or tokens. This process is pivotal for making text data more accessible and manageable for analysis.

Key applications that benefit from tokenization include sentiment analysis, topic modeling, and machine learning. These techniques, when applied to tokenized text, can yield significant insights into the underlying themes, sentiments, and patterns present in the text data.

Tokenization's role is not just limited to breaking down text. It serves as a crucial step in standardizing text data for further analytical procedures, thereby making the overall process of natural language processing more efficient and effective. Furthermore, it facilitates the comparison and analysis of different texts by providing a uniform structure of words or tokens as a basis for comparison.

Task

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  1. Import sentence and word tokenization functions from the NLTK library.
  2. Tokenize the text into words and sentences using the appropriate functions.

Solution

# Import sentence and word tokenization functions from NLTK
from nltk.tokenize import sent_tokenize, word_tokenize

# Download the 'punkt' tokenizer models
nltk.download("punkt")

# Tokenize the text into words
word_tokenized = word_tokenize(story)

# Tokenize the text into sentences
sent_tokenized = sent_tokenize(story)

# Print the results of tokenization
print("---- Word tokenize ----\n", word_tokenize(story))
print("\n---- Sentence tokenize ----\n", sent_tokenize(story))

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Section 1. Chapter 3
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