Introduction to LangChain from Udemy

Welcome to the Introduction to LangChain course. Very recently, we saw a revolution with the advent of Large Language Models. It is rare that something changes the world of Machine Learning that much, and the hype around LLM is real. That's something that very few experts predicted, and it's essential to be prepared for the future.

LangChain is an amazing tool that democratizes machine learning for everybody. With LangChain, every software engineer can use machine learning and build applications with it. Prior to LangChain and LLMs, you needed to be an expert in the field. Now, you can build an application with a couple of lines of code. Think about language models as a layer between humans and software. LangChain is a tool that allows the integration of LLMs within a larger software.

Topics covered in that course:

LangChain Basics
Loading and Summarizing Data
Prompt Engineering Fundamentals
Vector Database Basics
Retrieval Augmented Generation
RAG Optimization and Multimodal RAG
Augmenting LLMs with a Graph Database
Augmenting LLMs with tools
How to Build a Smart Voice Assistant
How to Automate Writing Novels
How to Automate Writing Software

The course is very hands-on. We will work on many examples to build your intuition on the different concepts we will address in this course. By the end of the course, you will be able to build complex software applications powered by Large Language Models.

Warning: during the course, I used a lot of the OpenAI models through their API. If you choose to use the OpenAI API as well, be aware that this will generate additional costs. I expect that reproducing all the examples in the course should not require more than $50 in OpenAI credits. However, all the examples can be reproduced for free if you choose to use open-source LLMs.

What's inside

Learning objectives

Build software applications with large language models
Learn how to augment llms with tools and databases
Learn how to connect llms to external data
Learn the fundamentals of prompt engineering

Learn the fundamentals of vector databases
Learn the fundamentals of retrieval augmented generation
Langchain: models, chains, prompts, memory, vector stores, agents!

Build software applications with large language models
Learn how to augment llms with tools and databases
Learn how to connect llms to external data
Learn the fundamentals of prompt engineering
Learn the fundamentals of vector databases
Learn the fundamentals of retrieval augmented generation
Langchain: models, chains, prompts, memory, vector stores, agents!

Syllabus

Introduction

Introduction to the course

Course structure

Setting up your Jupyter Notebook (optional)

LangChain Basics

Text

OpenAI package (temporary fix)

LLMs

Chains

Prompt Templates

Output parsers

Simple Sequence

Written material

Outro

Loading and Summarizing Data

Loading Data

Summary strategies

Summarization examples

Prompt Engineering Fundamentals

Elements of a Prompt

Few-Shot Learning

Memetic Proxy

Chain of Thought

Self-Consistency

Inception

Self-Ask

ReAct

Plan and Execute

Vector Database Basics

Intro

Why Vector Databases?

Similarity Metrics

Why do we need Indexing?

Product Quantization

Locality Sensitive-Hashing

Navigable Small World

Hierarchical Navigable Small World

Maximum Marginal Relevance

We learn how to augment LLMs with additional data coming from a database

Indexing data

Loading data into a vector database

Providing sources

Indexing a website

Indexing a GitHub repository

The Stuff Strategy

The Map-Reduce Strategy

The Refine strategy

The Map-Rerank strategy

RAG optimization and Multimodal RAG

Multi-Vector Retriever

Hypothetical Queries

Parsing a Multimodal Document

Summarizing the Data

Describing Images with LlaVA

Index the Data into a Database

Finalizing the RAG Pipeline

Augmenting LLMs with a Graph Database

What is a Knowledge Base

Getting the Data

Create the Graph Representation

Augmenting LLMs with a Knowledge Base

Using the Diffbot Graph Transformer

Creating a Local Graph Database

Augmenting an LLM with the Graph Database

Augmenting LLMs with Tools

What is an Agent?

Agent Example

Dissecting the Iterative Process

The Different Tools

Building Custom Tools

How to build a Smart Voice Assistant

What are we building

Setting up the Project

From Speech to Text

From Text to Speech

Building a Conversational Agent

Augmenting the Agent with Tools

Good to know

Know what's good

, what to watch for

, and possible dealbreakers

Taught by an expert in the field of natural language processing

Covers a wide range of topics related to large language models

Hands-on and interactive, allowing learners to gain practical experience

Provides a strong foundation for beginners in the field of large language models

Requires some prior knowledge of machine learning and programming

May require additional costs for using OpenAI models

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 Introduction to LangChain with these activities:

Review LLMs

Show steps

Familiarize yourself with LLMs to build a base knowledge.

Browse courses on Large Language Models

Show steps

Read "The AI Book" by Peter Norvig

Show steps

Expand your knowledge of artificial intelligence and its applications.

View Data Science in Context: Foundations,... on Amazon

Show steps

Practice Summarizing Text

Show steps

Exercises to reinforce text summarization skills taught in the course.

Browse courses on Summarization

Show steps

Select a piece of text to summarize.
Read the text and identify the main points.
Write a summary of the text, capturing the main ideas and key details.

Five other activities

Expand to see all activities and additional details

Show all eight activities

Explore Additional LangChain Models

Show steps

Gain deeper understanding of LangChain's capabilities by exploring and experimenting with additional models.

Browse courses on LangChain

Show steps

Read the documentation and tutorials on the available LangChain models.
Choose a model to experiment with.
Develop test cases to evaluate the model's performance.
Analyze the results and learn from the model's behavior.

Try LangChain with OpenAI API

Show steps

Extend your knowledge of LangChain by experimenting with the OpenAI API.

Browse courses on LangChain

Show steps

Set up an OpenAI API account.
Find appropriate OpenAI models to use with LangChain.
Implement the integration between LangChain and OpenAI models.
Test and evaluate the performance of your integration.

Build a Simple Text Summarization Tool

Show steps

Apply your skills by creating a practical tool that can summarize text automatically.

Browse courses on Summarization

Show steps

Design the user interface and functionality of the tool.
Implement the text summarization algorithm using LangChain.
Test the tool with different types of text and evaluate its performance.
Deploy the tool and make it accessible to others.

Contribute to a LangChain Open-Source Project

Show steps

Gain hands-on experience and contribute to the LangChain community by participating in an open-source project.

Browse courses on LangChain

Show steps

Find a LangChain open-source project that aligns with your interests and skills.
Join the project's community and familiarize yourself with its goals, codebase, and contribution guidelines.
Identify a task or feature that you can contribute to.
Fork the project's repository, make your changes, and submit a pull request.
Collaborate with other contributors to refine and merge your changes.

Write a Blog Post on LangChain's Impact on Machine Learning

Show steps

Share your insights and contribute to the community by writing about LangChain's impact on machine learning.

Browse courses on LangChain

Show steps

Research and gather information about LangChain and its applications in machine learning.
Outline the key points and arguments you want to make in your blog post.
Write the first draft of your blog post.
Edit and refine your blog post, ensuring clarity, conciseness, and accuracy.
Publish your blog post and promote it through social media and other channels.

Career center

Learners who complete Introduction to LangChain will develop knowledge and skills that may be useful to these careers:

Data Scientist

Data Scientists use their knowledge of programming, statistics, and machine learning to extract insights from data. This course can help you build a strong foundation in machine learning, which is a key skill for Data Scientists. You will learn how to use machine learning techniques to solve real-world problems, such as fraud detection and customer segmentation.

See salaries and explore the career path for Data Scientist

Machine Learning Engineer

Machine Learning Engineers design, develop, and deploy machine learning models. This course can help you build a strong foundation in machine learning, which is a key skill for Machine Learning Engineers. You will learn how to use machine learning techniques to solve real-world problems, such as fraud detection and customer segmentation.

See salaries and explore the career path for Machine Learning Engineer

Software Engineer

Software Engineers design, develop, and maintain software applications. This course can help you build a strong foundation in machine learning, which is a key skill for Software Engineers. You will learn how to use machine learning techniques to build software applications that are more intelligent and efficient.

See salaries and explore the career path for Software Engineer

Data Analyst

Data Analysts collect, clean, and analyze data to help businesses make better decisions. This course can help you build a strong foundation in machine learning, which is a key skill for Data Analysts. You will learn how to use machine learning techniques to analyze data and identify trends and patterns.

See salaries and explore the career path for Data Analyst

Sales Analyst

Sales Analysts help businesses understand their sales performance and identify opportunities for improvement. This course can help you build a strong foundation in machine learning, which is a key skill for Sales Analysts. You will learn how to use machine learning techniques to analyze sales data and identify trends and patterns.

See salaries and explore the career path for Sales Analyst

Business Analyst

Business Analysts help businesses improve their operations and make better decisions. This course can help you build a strong foundation in machine learning, which is a key skill for Business Analysts. You will learn how to use machine learning techniques to analyze data and identify opportunities for improvement.

See salaries and explore the career path for Business Analyst

Operations Research Analyst

Operations Research Analysts use mathematical and statistical models to solve business problems. This course can help you build a strong foundation in machine learning, which is a key skill for Operations Research Analysts. You will learn how to use machine learning techniques to develop models that can optimize business processes.

See salaries and explore the career path for Operations Research Analyst

Marketing Analyst

Marketing Analysts help businesses understand their customers and develop effective marketing campaigns. This course can help you build a strong foundation in machine learning, which is a key skill for Marketing Analysts. You will learn how to use machine learning techniques to analyze customer data and identify opportunities for growth.

See salaries and explore the career path for Marketing Analyst

Risk Analyst

Risk Analysts help businesses identify and manage risks. This course can help you build a strong foundation in machine learning, which is a key skill for Risk Analysts. You will learn how to use machine learning techniques to develop models that can predict risks and identify opportunities for mitigation.

See salaries and explore the career path for Risk Analyst

Product Manager

Product Managers are responsible for the development and launch of new products. This course can help you build a strong foundation in machine learning, which is a key skill for Product Managers. You will learn how to use machine learning techniques to identify customer needs and develop products that meet those needs.

See salaries and explore the career path for Product Manager

Quantitative Analyst

Quantitative Analysts use mathematical and statistical models to evaluate financial risks and opportunities. This course can help you build a strong foundation in machine learning, which is a key skill for Quantitative Analysts. You will learn how to use machine learning techniques to develop models that can predict financial outcomes.

See salaries and explore the career path for Quantitative Analyst

Financial Analyst

Financial Analysts help businesses make investment decisions. This course can help you build a strong foundation in machine learning, which is a key skill for Financial Analysts. You will learn how to use machine learning techniques to analyze financial data and identify investment opportunities.

See salaries and explore the career path for Financial Analyst

Consultant

Consultants help businesses solve problems and improve their performance. This course can help you build a strong foundation in machine learning, which is a key skill for Consultants. You will learn how to use machine learning techniques to analyze data and identify opportunities for improvement.

See salaries and explore the career path for Consultant

Statistician

Statisticians collect, analyze, and interpret data. This course can help you build a strong foundation in machine learning, which is a key skill for Statisticians. You will learn how to use machine learning techniques to analyze data and identify trends and patterns.

See salaries and explore the career path for Statistician

Actuary

Actuaries use mathematical and statistical models to assess risk and uncertainty. This course can help you build a strong foundation in machine learning, which is a key skill for Actuaries. You will learn how to use machine learning techniques to develop models that can predict risks and identify opportunities for mitigation.

See salaries and explore the career path for Actuary