Joel Grus takes a rare approach: instead of relying on pre-built libraries like pandas or scikit-learn, he teaches you to build everything from scratch—vectors, statistics, probability, gradient descent, and ML models.

1. Build Data Science from First Principles

This book reads like a hands-on course. You’ll cover: <ul><li>Descriptive & inferential statistics</li></ul> <ul><li>Linear algebra & vector math</li></ul> <ul><li>Probability theory</li></ul> <ul><li>Gradients & optimization</li></ul> <ul><li>Supervised learning models</li></ul> <ul><li>Basic recommender systems</li></ul> <ul><li>Graph analysis</li></ul>

2. A Complete Curriculum in Disguise

Python here is not just a programming language — it’s a vehicle for understanding math and logic. You'll code everything manually: dot products, means, correlations, regressions, and more.

3. Python as a Thinking Tool

One key chapter is about gradient descent. You’ll learn to define loss functions, compute derivatives, and update parameters step by step — just like training a model manually.

4.Gradient Descent: Learning by Optimization

Rather than abstracting everything away, this book has you build core algorithms from the ground up: <ul><li>Linear regression</li></ul> <ul><li>Logistic regression</li></ul> <ul><li>k-Nearest Neighbors</li></ul> <ul><li>Simple decision trees</li><li> </li><li>Recommendation engines based on similarity</li></ul>

5. Machine Learning Without Magic

You'll explore concepts like: <ul><li>Correlation vs. causation</li></ul> <ul><li>Pitfalls of averages</li></ul> <ul><li>When to use standard deviation vs. interquartile range</li></ul> <ul><li>Hypothesis testing and p-values</li></ul>

6. Statistical Thinking as a Mental Framework

Above all, Grus shows that data science is about mental discipline, not tools. Building things yourself forces you to understand deeply and question assumptions.

7. Data Science Is a Way of Thinking

CS or stats students seeking a deeper foundation Self-taught learners who don’t want shortcuts Developers transitioning into data science Anyone who wants to think like a true data scientist

8. Who Should Read This?

Data Science from Scratch doesn’t just teach you how to do data science. It teaches you why it works, what it’s built on, and how to think critically at every step. > Learn it. Code it. Understand it. Build it from scratch.

Final Insight

Discover how Data Science from Scratch by Joel Grus teaches you to build every core concept — from statistics to machine learning — using pure Python. No shortcuts, just deep understanding. Ideal for those who want to truly master data science fundamentals.

Data science libraries, frameworks, modules, and toolkits are great for doing data science, but they’re also a good way to dive into the discipline without actually understanding data science. In this book, you’ll learn how many of the most fundamental data science tools and algorithms work by implementing them from scratch.If you have an aptitude for mathematics and some programming skills, author Joel Grus will help you get comfortable with the math and statistics at the core of data science, and with hacking skills you need to get started as a data scientist. Today’s messy glut of data holds answers to questions no one’s even thought to ask. This book provides you with the know-how to dig those answers out.<ul><li>Get a crash course in Python</li><li>Learn the basics of linear algebra, statistics, and probability—and understand how and when they're used in data science</li><li>Collect, explore, clean, munge, and manipulate data</li><li>Dive into the fundamentals of machine learning</li><li>Implement models such as k-nearest Neighbors, Naive Bayes, linear and logistic regression, decision trees, neural networks, and clustering</li><li>Explore recommender systems, natural language processing, network analysis, MapReduce, and databases</li></ul>

technologyandthefuture

Technology & The Future

education

Learning & Education

books

Books

computerscience

Computer Science

artificialintelligence

Artificial Intelligence

Joel Grus

Data Science from Scratch

Toyota's success is rooted in its unique management philosophy, which combines a focus on long-term goals, continuous improvement (Kaizen), respect for people, and an unwavering commitment to quality.

The Secret of Toyota's Success:

Toyota strikes a balance between short-term and long-term goals, efficiency and flexibility, and automation and human labor. This balance ensures sustained growth and adaptability to changing market conditions.

Striking a Balance:

People are at the heart of Toyota's operations. The company invests heavily in employee training, development, and empowerment. By fostering a culture of respect and teamwork, Toyota harnesses the full potential of its workforce.

Keep People Management in Focus:

Strategic decisions at Toyota are guided by long-term thinking. The company prioritizes long-term sustainability over short-term gains, ensuring decisions align with enduring principles and objectives.

Base Important Decisions on Long-Term Policies:

Toyota adopts technology thoughtfully, ensuring it enhances processes without undermining human skills and judgment. Technology is seen as a tool to support and augment human capabilities, not replace them.

Be Mindful When Adopting Technology:

Known as "Genchi Genbutsu" (go and see), Toyota encourages managers and employees to observe processes firsthand to gain a deep understanding of the situation. This hands-on approach leads to more informed and effective problem-solving.

Always Observe a Situation Yourself:

Transparency and open communication are critical at Toyota. Sharing information openly fosters trust, facilitates problem-solving, and ensures everyone is aligned with the company's goals and values.

Transparency is a Key to Success:

(Nemawashi): Toyota makes decisions through a consensus-building process that involves extensive discussion and consideration of all options. This approach ensures that decisions are well-thought-out and supported by the entire organization.

Make Decisions Slowly by Consensus

Toyota fosters a culture of learning and adaptability. The company encourages experimentation, learning from mistakes, and adapting to changes in the environment. This flexibility allows Toyota to stay competitive and innovative.

Continuous Learning and Adaptation:

The principles of The Toyota Way create a robust framework for building a sustainable, efficient, and people-focused organization. By adhering to these principles, companies can achieve lasting success, continuous improvement, and a resilient organizational culture.

Conclusion

Curious what catapulted Toyota to global leadership? With core principles that drive unparalleled success, discover the secrets behind the company's dominance in the automotive industry!

The Toyota Way Fieldbook is a companion to the international bestseller The Toyota Way. The Toyota Way Fieldbook builds on the philosophical aspects of Toyota's operating systems by detailing the concepts and providing practical examples for application that leaders need to bring Toyota's success-proven practices to life in any organization. The Toyota Way Fieldbook will help other companies learn from Toyota and develop systems that fit their unique cultures. The book begins with a review of the principles of the Toyota Way through the 4Ps model-Philosophy, Processes, People and Partners, and Problem Solving. Readers looking to learn from Toyota's lean systems will be provided with the inside knowledge they need to <ul><li>Define the companies purpose and develop a long-term philosophy</li> <li>Create value streams with connected flow, standardized work, and level production</li> <li>Build a culture to stop and fix problems</li> <li>Develop leaders who promote and support the system</li> <li>Find and develop exceptional people and partners</li> <li>Learn the meaning of true root cause problem solving</li> <li>Lead the change process and transform the total enterprise</li> </ul> The depth of detail provided draws on the authors combined experience of coaching and supporting companies in lean transformation. Toyota experts at the Georgetown, Kentucky plant, formally trained David Meier in TPS. Combined with Jeff Liker's extensive study of Toyota and his insightful knowledge the authors have developed unique models and ideas to explain the true philosophies and principles of the Toyota Production System.

corporateculture

Corporate Culture

moneyandinvestments

Money & Investments

business

Business

humanresources

Human Resources

Jeffrey K. Liker

David Meier

The Toyota Way Fieldbook

Scrum maximizes efficiency and quality by reducing waste and focusing on delivering value, leading to increased profitability for organizations.

The Scrum method for handling projects ensures profitability

By organizing work into sprints and emphasizing continuous improvement, Scrum enhances productivity and helps teams deliver better results more quickly.

Scrum offers an efficient way of doing work:

Scrum fosters collaboration and communication, allowing teams to leverage collective expertise and creativity to solve problems more effectively.

Teamwork is smart work:

The structured rhythm of regular sprints and daily stand-ups provides a predictable workflow, helping teams maintain focus and productivity.

Time and rhythm are of great importance in the Scrum method:

Scrum discourages multitasking, which can dilute focus and efficiency. Instead, it advocates for concentrating on one task at a time to enhance productivity and quality.

Multitasking doesn't increase productivity:

To implement Scrum, start by defining roles (Product Owner, Scrum Master, Development Team), setting up regular Scrum events (daily stand-ups, sprint planning, reviews, retrospectives), and using key artifacts (product backlog, sprint backlog, increment).

How to begin practicing Scrum successfully:

<ol><li>Create Product Backlog: A prioritized list of tasks and features.</li><li>Plan Sprint: Select tasks from the backlog to work on in the sprint.</li><li>Daily Stand-ups: Hold brief daily meetings.</li><li>Review Work: Demonstrate completed tasks at the end of the sprint.</li><li>Reflect and Improve: Conduct a retrospective to discuss what went well and what could be improved.</li></ol>

Steps

<ol><li>Sprints: Time-boxed iterations (2-4 weeks) where work is completed.</li><li>Daily Stand-ups: 15-minute meetings to discuss progress and obstacles.</li><li>Sprint Planning: Meeting to decide the work for the upcoming sprint.</li><li>Sprint Review: Meeting at the end of the sprint to review work done.</li><li>Sprint Retrospective: Meeting to reflect on the sprint and improve processes.</li></ol>

Events

<ol><li>Product Backlog: A prioritized list of features or tasks for the product.</li><li>Sprint Backlog: Tasks selected for completion during the sprint.</li><li>Burndown Chart: Visual representation of work left versus time.</li></ol>

Tools

Scrum is a powerful framework that helps teams work more effectively, deliver higher quality products faster, and ultimately achieve greater success and profitability.

Get rid of productivity killers once and for all! The Scrum method is a proven system to enable individuals and teams to unlock peak performance and thrive.

For those who believe that there must be a more agile and efficient way for people to get things done, here is a brilliantly discursive, thought-provoking book about the leadership and management process that is changing the way we live.   In the future, historians may look back on human progress and draw a sharp line designating “before Scrum” and “after Scrum.” Scrum is that ground-breaking.  It already drives most of the world’s top technology companies. And now it’s starting to spread to every domain where leaders wrestle with complex projects.   If you’ve ever been startled by how fast the world is changing, Scrum is one of the reasons why. Productivity gains of as much as 1200% have been recorded, and there’s no more lucid – or compelling – explainer of Scrum and its bright promise than Jeff Sutherland, the man who put together the first Scrum team more than twenty years ago.   The thorny problem Jeff began tackling back then boils down to this: people are spectacularly bad at doing things with agility and efficiency. Best laid plans go up in smoke. Teams often work at cross purposes to each other. And when the pressure rises, unhappiness soars. Drawing on his experience as a West Point-educated fighter pilot, biometrics expert, early innovator of ATM technology, and V.P. of engineering or CTO at eleven different technology companies, Jeff began challenging those dysfunctional realities, looking  for solutions that would have global impact.   In this book you’ll journey to Scrum’s front lines where Jeff’s system of deep accountability, team interaction, and constant iterative improvement is, among other feats, bringing the FBI into the 21st century, perfecting the design of an affordable 140 mile per hour/100 mile per gallon car, helping NPR report fast-moving action in the Middle East, changing the way pharmacists interact with patients, reducing poverty in the Third World, and even helping people plan their weddings and accomplish weekend chores.    Woven with insights from martial arts, judicial decision making, advanced aerial combat, robotics, and many other disciplines, Scrum is consistently riveting. But the most important reason to read this book is that it may just help you achieve what others consider unachievable – whether it be inventing a trailblazing technology, devising a new system of education, pioneering a way to feed the hungry, or, closer to home, a building a foundation for your family to thrive and prosper.

Data Science from Scratch

The Toyota Way Fieldbook

Scrum

Henderson Costa