Hi, Recently, I felt something very weird here. I am doing some toy examples for code verification. Here, I believed that two models should return the same results. But, the only second model returns me correct results (the first model gives me posterior distributions around 0)… The only difference…

Hi, that’s a really good question. It’s part of the broadcasting rules built into systems like numpy and pytensor. Here’s a weird thing about numpy: np.array([3,4]) + np.array([[7],[6]]) yields: array([[10, 11], [ 9, 10]]) Because it adds 7 to [3,4] for the top row and 6 to [3,4] for the …

Difference between shape = (2,1) & shape = 2

Questions v5

Gumibear_Toronto October 2, 2023, 9:44pm 3

That clarified my problem so clearly. Thanks for your detailed explanation!

Best,

Jinyoung

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Difference between shape = (2,1) & shape = 2

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