Data Science: Natural Language Processing (NLP) In Python

这是一门专注于通过Python实战构建自然语言处理（NLP）系统的课程。课程将引导学员从零开始，亲手搭建密码破译、垃圾邮件检测、情感分析、文章改写等多个实用项目，并深入讲解潜在语义分析等核心技术，为理解ChatGPT、Stable Diffusion等前沿AI技术奠定基础。课程全程采用Python编程教学，避开高深数学理论，强调“从实现中理解”的理念，适合具备Python基础、希望掌握NLP实战能力的学习者。

最后更新日期 10/2025
MP4 | 视频：h264, 1920×1080 | 音频：AAC, 44.1 KHz
语言：英语 | 大小：3.61 GB | 时长：11小时50分钟

Data Science: Natural Language Processing (NLP) In Python。Applications: decrypting ciphers, spam detection, sentiment analysis, article spinners, and latent semantic analysis. 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 MULTIPLE practical systems using natural language processing, or NLP – the branch of machine learning and data science that deals with text and speech. 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 scratchOther 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… Students who are comfortable writing Python code, using loops, lists, dictionaries, etc.,Students who want to learn more about machine learning but don’t want to do a lot of math,Professionals who are interested in applying machine learning and NLP to practical problems like spam detection, Internet marketing, and sentiment analysis,This course is NOT for those who find the tasks and methods listed in the curriculum too basic.,This course is NOT for those who don’t already have a basic understanding of machine learning and Python coding (but you can learn these from my FREE Numpy course).,This course is NOT for those who don’t know (given the section titles) what the purpose of each task is. E.g. if you don’t know what “spam detection” might be useful for, you are too far behind to take this course. What you’ll learn 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 Requirements Install Python, it’s free! You should be at least somewhat comfortable writing Python code Know how to install numerical libraries for Python such as Numpy, Scipy, Scikit-learn, Matplotlib, and BeautifulSoup Take my free Numpy prerequisites course (it’s FREE, no excuses!) to learn about Numpy, Matplotlib, Pandas, and Scikit-Learn, as well as Machine Learning basics Optional: If you want to understand the math parts, linear algebra and probability are helpful