The importance of p(x, y) and not just p(y|x): if feature x has a value never seen in trainset, we want to know about it.

I have a small quibble with Barry Ritholtz bestseller "How Not To Invest". Passive investing in indices isn't quite passive: you have to pick the index, and the index construction can be highly complex and discretionary.

Some people question whether a "distilled" model can outperform the "teacher" model (as it was alleged that DeepSeek distilled OpenAI's GPT's output and outperformed it). We demonstrated that this can be done in our book a.co/d/aOLoiG5

Applying Transformers to Financial Time Series. A new blog post: gatambook.substack.com/p/applying-tra…

Goodness! After reading my co-author Hamlet Jesse Medina Ruiz 's explanation of attention and transformers 3 times, I finally understand them! So far his explanation is the best among many AI books I read: a.co/d/8d7YsZ5

Valeriy Valeriy M., PhD, MBA, CQF is one of the best AI experts out there. A great honour that he likes my book!

The gradient of an expectation can be expressed as expectation of a gradient - that's the essence of policy optimization in reinforcement learning as well as Monte Carlo optimization of neural nets. For the latter, see a.co/d/flGaZbz

Applying transformer to multiple assets' features. A new blog post: gatambook.substack.com/p/cross-attent…

Deep Reinforcement Learning for Portfolio Optimization. Is it really better than our Conditional Portfolio Optimization method? See new blog post: gatambook.substack.com/p/deep-reinfor…

At least some people like our fifth book amzn.to/3R5IESx "Kudos ... for sharing their hard-earned knowledge and creating a practitioner resource that is timely, relevant, and ‘roll up your sleeves’ practical" - Jay Vyas, CSO, Firinne Capital; fmr Head of Research, Canada

Goodness! Jean-Philippe Bouchaud posted a review of our book! amzn.eu/d/d5rCUVH

My co-author Hamlet Jesse Medina Ruiz published an excellent blog post summarizing the key points of our book: gatambook.substack.com/p/book-introdu…

When people ask me how old I am these days, I tell them I am old enough to be in the same room as one of the key physicists of the Manhattan Project many times.

Some key takeaways from Chapter 1 of Ernest Chan Algorithmic Trading. #proptrading #learning #quantfinance

I will teaching my “Trading with GenAI” workshop at Imperial College London Nov 22-23. Register here: meetup.com/thalesians/eve…