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Are you talking about this one http://neuralnetworksanddeeplearning.com/

Amusingly, you're probably thinking of this book. It's been linked to many times here, probably at this URL: http://www.iro.umontreal.ca/~bengioy/dlbook/version-07-08-20...

That URL rings a bell. I think you're right.

Isn't that the same book as the one posted by OP, but an older version?

Also, latest version seems to have some ugly boxes around text. Latest version that seems ok here is this one: http://goodfeli.github.io/dlbook/version-2015-11-24/index.ht...

Yes, that's what I said. The parent was confused because previously he saw this book posted at the link I provided, and hadn't made the connection that the OP's link is the same.

Edit: when I said "this book" I was referring to the book linked to by the URL from the OP.

There's Model Based Machine Learning: http://www.mbmlbook.com