Gain insights into text preprocessing with Python. Explore text cleaning, normalization, and advanced techniques like BoW and TF-IDF. Discover skills to handle unstructured data effectively for NLP.

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Text Processing

This course is designed to empower you with essential skills for effectively handling text data in the context of natural language processing (NLP). You’ll embark on a transformative journey that will equip you with a solid foundation in text manipulation, enabling you to tackle the challenges of unstructured data. 

The course discusses both fundamental and advanced text preprocessing techniques. You’ll learn how to clean text and remove noise, irrelevant characters, and inconsistencies in text data. Once the data is ready for analysis, you’ll learn text normalization techniques such as stemming, lemmatization, and casing. In addition to mastering preprocessing fundamentals, you’ll also learn techniques such as bag-of-words (BoW) and term frequency-inverse document frequency (TF-IDF).

By the end of the course, you’ll be able to position yourself for success in a data-centric world where the ability to extract meaning from unstructured textual information is a prized skill.

Text Preprocessing with Python

Random combination of words or characters

Sequential combinations of vowels in words

Sequences of $n$ number of words or characters

What are n-grams in text preprocessing?

Trigrams require more computational power.

Trigrams capture more complex linguistic patterns.

Trigrams result in lower-dimensional data.

Trigrams result in superior performance on complex language tasks.

What's one advantage of using trigrams over higher-order n-grams?

What’s one advantage of using trigrams over higher-order n-grams?

As the value of "n" increases in higher-order n-grams, what happens to the number of possible combinations?

As the value of “n” increases in higher-order n-grams, what happens to the number of possible combinations?

What advantage do n-grams have over more advanced text representation techniques?

What advantage do n-grams have over more advanced text representation techniques?

Test yourself on what you’ve learned about n-grams.


About This Course

Introduction To Text Preprocessing

Regular Expressions

Irrelevant Text Data

Basic Text Preprocessing Techniques

Indexing

Text Transformation

Text Representation

Text Feature Engineering

Advanced Text Preprocessing

N-grams

Text Classification of Customer Reviews

Conclusion

Quiz: N-Grams