Choosing Between Two Interest Rate Modeling References

# What is the difference between Brigo and Mercurio's book and Andersen and Piterbarg's book?


# What is the difference between Brigo and Mercurio's book and Andersen and Piterbarg's book?












I'm referring to Interest Rate Models by Brigo and Mercurio and Interest Rate Modelling Volume 1-3 by Andersen and Piterbarg.

Both are around 1000 pages, and are frequently recommended as "bibles" for interest rate models.

But what's the difference between the two? Pros and cons, etc?

## Answer by NC520 (score 7)

https://quant.stackexchange.com/a/78603

I've delved deeply into both texts and engaged in extensive discussions with peers in the industry. Here's my perspective:

Brigo and Mercurio prove to be more beneficial. Upon mastering their content, one finds themselves well-prepared for a quantitative position interview. The clarity of their explanations is exceptional, ensuring that after each study session, there's always a valuable takeaway. This clarity also facilitates easier recollection of previously covered material as you advance through the book.

Conversely, Andersen and Piterbarg adopt a more technical approach. I frequently found myself lost amidst the mathematical subtleties, spending more time grappling with the technical aspects than applying the learned techniques.

In summary, Brigo and Mercurio excel in teaching practical techniques, whereas Andersen and Piterbarg focus more on the mathematical foundations. Those with a PhD in Mathematics (or a related field) might find Andersen and Piterbarg less challenging, but even then, it's debatable whether it offers the same holistic understanding of connecting concepts as Brigo and Mercurio does.

A particular point of frustration with Andersen and Piterbarg is the delayed introduction to interest rate modeling. The initial sections are dedicated to finite difference methods and Monte Carlo simulations, whereas Brigo and Mercurio dive straight into the heart of interest rate modeling.

## Answer by Álvaro Romaniega (score 4)

https://quant.stackexchange.com/a/79790

As mentioned before, there are advantages and disadvantages. I personally tend to prefer Andersen and Piterbarg's book. The theoretical framework presented there is much more rigorous, providing a deeper understanding of the models and theory at hand. For instance, the treatment of multifactor Gaussian models in Chapter 12 of Andersen and Piterbarg, from the classical perspective and the HJM framework, connects with the theory presented in Chapter 4 of the first volume, making the theoretical understanding much clearer and more general than the practical treatment in the first part of Chapter 4 of Brigo and Mercurio's book, which, in this case, is more of a recipe of formulas, really useful for implementing the G2++ model with constant coefficients. Do not get me wrong, Brigo and Mercurio's book is a great one; it is theoretically correct, covers topics not included in Andersen and Piterbarg's book, and is a classical reference for some topics, like Libor Market Models. That is why I have read it and use it whenever I can. However, I have usually found myself going back to Andersen and Piterbarg's book to find the answers I was looking for when dealing with models and theoretical problems related to interest rate models and products. I would not choose one over the other, but use both of them complementarily as they combined offer a good vision of the given topic.