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Ever wondered how AI technologies like OpenAI ChatGPT, GPT-4, DALL-E, Midjourney, and Stable Diffusion really work? In this course, you will learn the foundations of these groundbreaking applications.

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Ever wondered how AI technologies like OpenAI ChatGPT, GPT-4, DALL-E, Midjourney, and Stable Diffusion really work? In this course, you will learn the foundations of these groundbreaking applications.

In this course you will build This course is not part of my deep learning series, so it doesn't contain any hard math - just straight up coding in Python. All the materials for this course are FREE.

After a brief discussion about what NLP is and what it can do, we will begin building very useful stuff. The first thing we'll build is a cipher decryption algorithm. These have applications in warfare and espionage. We will learn how to build and apply several useful NLP tools in this section, namely, character-level language models (using the Markov principle), and genetic algorithms.

The second project, where we begin to use more traditional "machine learning", is to build a spam detector. You likely get very little spam these days, compared to say, the early 2000s, because of systems like these.

Next we'll build a model for sentiment analysis in Python. This is something that allows us to assign a score to a block of text that tells us how positive or negative it is. People have used sentiment analysis on Twitter to predict the stock market.

We'll go over some practical tools and techniques like the NLTK (natural language toolkit) library and latent semantic analysis or LSA.

Finally, we end the course by building an article spinner. This is a very hard problem and even the most popular products out there these days don't get it right. These lectures are designed to just get you started and to give you ideas for how you might improve on them yourself. Once mastered, you can use it as an SEO, or search engine optimization tool. Internet marketers everywhere will love you if you can do this for them.

This course focuses on "how to build and understand", not just "how to use". Anyone can learn to use an API in 15 minutes after reading some documentation. It's not about "remembering facts", it's about "seeing for yourself" via experimentation. It will teach you how to visualize what's happening in the model internally. If you want more than just a superficial look at machine learning models, this course is for you.

"If you can't implement it, you don't understand it"

  • Or as the great physicist Richard Feynman said: "What I cannot create, I do not understand".

  • My courses are the ONLY courses where you will learn how to implement machine learning algorithms from scratch

  • Other courses will teach you how to plug in your data into a library, but do you really need help with 3 lines of code?

  • After doing the same thing with 10 datasets, you realize you didn't learn 10 things. You learned 1 thing, and just repeated the same 3 lines of code 10 times...

Enroll now

What's inside

Learning objectives

  • Write your own cipher decryption algorithm using genetic algorithms and language modeling with markov models
  • Write your own spam detection code in python
  • Write your own sentiment analysis code in python
  • Perform latent semantic analysis or latent semantic indexing in python
  • Have an idea of how to write your own article spinner in python
  • Understand important foundations for openai chatgpt, gpt-4, dall-e, midjourney, and stable diffusion

Syllabus

Know about NLP applications and some tasks it performs.
Introduction and Outline
Why Learn NLP?
The Central Message of this Course (Big Picture Perspective)
Read more
Course Preparation
How to Succeed in this Course
Where to get the code and data
How to Open Files for Windows Users
Machine Learning Basics Review
Machine Learning: Section Introduction
What is Classification?
Classification in Code
What is Regression?
Regression in Code
What is a Feature Vector?
Machine Learning is Nothing but Geometry
All Data is the Same
Comparing Different Machine Learning Models
Machine Learning and Deep Learning: Future Topics
Section Summary
Markov Models
Markov Models Section Introduction
The Markov Property
The Markov Model
Probability Smoothing and Log-Probabilities
Building a Text Classifier (Theory)
Building a Text Classifier (Exercise Prompt)
Building a Text Classifier (Code pt 1)
Building a Text Classifier (Code pt 2)
Language Model (Theory)
Language Model (Exercise Prompt)
Language Model (Code pt 1)
Language Model (Code pt 2)
Markov Models Section Summary
Decrypting Ciphers
Section Introduction
Ciphers
Language Models
Genetic Algorithms
Code Preparation
Code pt 1
Code pt 2
Code pt 3
Code pt 4
Code pt 5
Code pt 6
Section Conclusion
Build your own spam detector
Build your own spam detector - description of data
Build your own spam detector using Naive Bayes and AdaBoost - the code
Key Takeaway from Spam Detection Exercise
Naive Bayes Concepts
AdaBoost Concepts

In addition to the word frequencies we looked at previously, this lecture looks at bag-of-words in general and different ways to implement that, including raw counts and binary indicator variables. We also briefly mention TF-IDF.

Spam Detection FAQ (Remedial #1)
What is a Vector? (Remedial #2)
SMS Spam Example
SMS Spam in Code
Suggestion Box
Build your own sentiment analysis algorithm in Python

What is sentiment analysis? In this lecture we'll look at the data we'll be using to build our sentiment analysis tool, and talk about how we can manually pre-process the data so that we can plug it into a machine learning classifier.

Logistic Regression Review
Preprocessing: Tokenization
Preprocessing: Tokens to Vectors

In this lecture we'll write our sentiment analyzer in Python to predict sentiment on Amazon reviews.

Sentiment Analysis Extension
How to Improve Sentiment Analysis & FAQ
Know more about what NLTK can do in terms of NLP tasks

How do we tag the tokens of a sentence by their parts-of-speech? i.e. Is this token a noun, verb, adjective, adverb, or something else?

How do we turn words into their "base form"? i.e. plural to singular

Can we also tag parts of a sentence as a "person", "organization", or "location"?

Want more NLTK?
Perform LSA / LSI for data exploration and dimensionality reduction in Python

What is synonymy and polysemy and how can LSA / LSI help?

SVD - The underlying math behind LSA
Latent Semantic Analysis in Python
What is Latent Semantic Analysis Used For?
Extending LSA
Write your own article spinner in Python and think of possible improvements

What is article spinning and how is it related to search engines, SEO (search engine optimization), and Internet marketing?

What will be our strategy for creating an article spinner? We'll create a trigram model.

More about Language Models
Precode Exercises
Writing an article spinner in Python
Article Spinner Extension Exercises
Take the next steps to learning more about NLP

Important NLP topics you should "know of" but that we didn't cover, and where you can learn more.

Setting Up Your Environment (FAQ by Student Request)
Pre-Installation Check
Anaconda Environment Setup
How to install Numpy, Scipy, Matplotlib, Pandas, IPython, Theano, and TensorFlow
Extra Help With Python Coding for Beginners (FAQ by Student Request)
How to Code by Yourself (part 1)
How to Code by Yourself (part 2)
Proof that using Jupyter Notebook is the same as not using it
Python 2 vs Python 3
Effective Learning Strategies for Machine Learning (FAQ by Student Request)
How to Succeed in this Course (Long Version)
Is this for Beginners or Experts? Academic or Practical? Fast or slow-paced?
Machine Learning and AI Prerequisite Roadmap (pt 1)

Good to know

Know what's good
, what to watch for
, and possible dealbreakers
Teaches theoretical algorithms such as Hidden Markov Models, Genetic Algorithms, and Naive Bayes that are used in the machine learning models of popular AI applications
Leverages free materials and coding in Python for assignments, which are accessible to those who may not have subscriptions or expensive software to purchase
Projects focus on building Markov models, genetic algorithms, sentiment analyzers, and an article spinner
Course is beginner-friendly, with tips on setting up a learning environment using Anaconda, installing necessary libraries, and coding independently
Prior machine learning knowledge is recommended, though not strictly required

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Reviews summary

Concise, well-paced nlp course

learners say this straightforward and well-paced course is perfect for those with prior knowledge in sklearn and machine learning.
Materials presented in a structured way.
"Straightforward course without any unnecessary deviations."
Instructor is very knowledgeable in the subject matter.
Course is well-paced.
"Pacing is perfect most especially for viewers with prior knowledge in Machine Learning and user interface of sklearn."

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Data Science: Natural Language Processing (NLP) in Python with these activities:
Python Review
Refresh your Python skills in preparation for the course.
Browse courses on Python
Show steps
NLP with Python
Provides a comprehensive introduction to the fundamentals of NLP
Show steps
NLP Study Group
Join a study group to discuss course concepts with peers.
Show steps
Five other activities
Expand to see all activities and additional details
Show all eight activities
Write Markov Model in Python
Write a Python implementation of a Markov model for text generation.
Browse courses on Markov Models
Show steps
  • Review Markov Models theory
  • Implement Markov Model in Python
  • Test Markov Model on a sample text
Build Spam Detector
Build a Naive Bayes spam detector using a provided tutorial.
Show steps
  • Follow tutorial to build a spam detector
  • Test spam detector on a sample dataset
  • Improve spam detector by modifying the model
Sentiment Analysis Project
Develop a sentiment analysis model on a real-world dataset.
Show steps
  • Collect and prepare a sentiment analysis dataset
  • Train and evaluate a sentiment analysis model
  • Evaluate the model's performance
Deploy NLP Model
Learn to deploy an NLP model using a cloud platform.
Show steps
NLP Research Project
In-depth NLP project covering model development and evaluation.
Show steps

Career center

Learners who complete Data Science: Natural Language Processing (NLP) in Python will develop knowledge and skills that may be useful to these careers:
NLP Engineer
NLP Engineers build and maintain natural language processing (NLP) systems. NLP systems allow computers to understand and generate human language. This course provides a strong foundation in NLP concepts and teaches you how to apply these concepts to real-world problems. You will learn how to build and train NLP models using popular programming languages and tools, and you will gain experience with a variety of NLP applications, including machine translation, text classification, and speech recognition.
Machine Learning Engineer
Machine Learning Engineers create and implement machine learning algorithms to solve complex problems. This course provides a strong foundation in machine learning concepts (such as probability, linear algebra, and optimization) and teaches you how to apply these concepts to real-world problems. You will learn how to build and train machine learning models using popular programming languages and tools, and you will gain experience with a variety of machine learning algorithms, including supervised learning, unsupervised learning, and deep learning.
Data Scientist
Data Scientists use data to solve business problems. They clean, analyze, and interpret data to extract insights and make predictions. This course provides a strong foundation in data science concepts and teaches you how to apply these concepts to real-world problems. You will learn how to use popular data science tools and techniques, and you will gain experience with a variety of data science projects.
Data Analyst
Data Analysts clean, analyze, and interpret data to find trends and patterns. They use this information to make informed decisions and solve business problems. This course provides a strong foundation in data analysis concepts and teaches you how to apply these concepts to real-world problems. You will learn how to use popular data analysis tools and techniques, and you will gain experience with a variety of data analysis projects.
Software Engineer
Software Engineers design, develop, and maintain software applications. This course provides a strong foundation in software engineering concepts and teaches you how to apply these concepts to real-world problems. You will learn how to use popular programming languages and tools, and you will gain experience with a variety of software engineering projects.
Product Manager
Product Managers are responsible for the development and launch of new products. They work with engineers, designers, and marketing teams to bring new products to market. This course provides a strong foundation in product management concepts and teaches you how to apply these concepts to real-world problems. You will learn how to conduct market research, develop product roadmaps, and launch new products.
Marketing Manager
Marketing Managers are responsible for developing and executing marketing campaigns. They work with product teams, sales teams, and customer service teams to promote new products and services. This course provides a strong foundation in marketing concepts and teaches you how to apply these concepts to real-world problems. You will learn how to conduct market research, develop marketing plans, and execute marketing campaigns.
Sales Manager
Sales Managers are responsible for leading and managing sales teams. They work with sales representatives to develop and execute sales strategies. This course provides a strong foundation in sales concepts and teaches you how to apply these concepts to real-world problems. You will learn how to develop sales plans, motivate sales teams, and close deals.
Customer Success Manager
Customer Success Managers are responsible for ensuring that customers are happy with their products and services. They work with customers to resolve issues, provide training, and build relationships. This course provides a strong foundation in customer service concepts and teaches you how to apply these concepts to real-world problems. You will learn how to resolve customer issues, provide training, and build relationships.
Technical Writer
Technical Writers create and maintain technical documentation. They work with engineers, scientists, and other professionals to document complex technical information. This course provides a strong foundation in technical writing concepts and teaches you how to apply these concepts to real-world problems. You will learn how to write clear and concise technical documentation.
UX Designer
UX Designers design the user experience for websites and applications. They work with product teams, engineers, and marketing teams to create user-friendly and engaging experiences. This course provides a strong foundation in UX design concepts and teaches you how to apply these concepts to real-world problems. You will learn how to conduct user research, design user interfaces, and test user experiences.
UI Designer
UI Designers design the visual appearance of websites and applications. They work with UX designers, engineers, and marketing teams to create user-friendly and engaging experiences. This course provides a strong foundation in UI design concepts and teaches you how to apply these concepts to real-world problems. You will learn how to use design tools, create prototypes, and design user interfaces.
Front-End Developer
Front-End Developers develop the front-end of websites and applications. They work with UX designers, UI designers, and back-end developers to create user-friendly and engaging experiences. This course provides a strong foundation in front-end development concepts and teaches you how to apply these concepts to real-world problems. You will learn how to use HTML, CSS, and JavaScript to create front-end applications.
Back-End Developer
Back-End Developers develop the back-end of websites and applications. They work with front-end developers, UX designers, and UI designers to create user-friendly and engaging experiences. This course provides a strong foundation in back-end development concepts and teaches you how to apply these concepts to real-world problems. You will learn how to use programming languages such as Python, Java, and C++ to create back-end applications.
Full-Stack Developer
Full-Stack Developers develop both the front-end and back-end of websites and applications. They work with UX designers, UI designers, and other developers to create user-friendly and engaging experiences. This course provides a strong foundation in full-stack development concepts and teaches you how to apply these concepts to real-world problems. You will learn how to use a variety of programming languages and tools to create full-stack applications.

Reading list

We've selected nine books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in Data Science: Natural Language Processing (NLP) in Python.
Comprehensive introduction to natural language processing, covering the basics of NLP including part-of-speech tagging, parsing, and named entity recognition. It also includes more advanced topics such as machine learning and deep learning for NLP.
Provides a comprehensive overview of machine learning, including supervised and unsupervised learning, as well as deep learning.
Provides a comprehensive overview of deep learning, including convolutional neural networks, recurrent neural networks, and generative adversarial networks.
Provides a practical introduction to natural language processing, focusing on building real-world applications.

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