ageron / ageron/handson-ml

Output of transformation pipeline different than shown in book

Aberta
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@ageron I directly downloaded your code and run it in jupyter notebook, all the code it the same but for some reason when I run the pipeline the numpy array is different than yours

`
from sklearn.pipeline import Pipeline
from sklearn.preprocessing import StandardScaler

num_pipeline = Pipeline([
('imputer', SimpleImputer(strategy="median")),
('attribs_adder', CombinedAttributesAdder()),
('std_scaler', StandardScaler()),
])

housing_num_tr = num_pipeline.fit_transform(housing_num)
housing_num_tr
`

And the output is

array([[-0.94135046, 1.34743822, 0.02756357, ..., 0.01739526,
0.00622264, -0.12112176],
[ 1.17178212, -1.19243966, -1.72201763, ..., 0.56925554,
-0.04081077, -0.81086696],
[ 0.26758118, -0.1259716 , 1.22045984, ..., -0.01802432,
-0.07537122, -0.33827252],
...,
[-1.5707942 , 1.31001828, 1.53856552, ..., -0.5092404 ,
-0.03743619, 0.32286937],
[-1.56080303, 1.2492109 , -1.1653327 , ..., 0.32814891,
-0.05915604, -0.45702273],
[-1.28105026, 2.02567448, -0.13148926, ..., 0.01407228,
0.00657083, -0.12169672]])
when in your book it is:

array([[-1.15604281, 0.77194962, 0.74333089, ..., -0.31205452,
-0.08649871, 0.15531753],
[-1.17602483, 0.6596948 , -1.1653172 , ..., 0.21768338,
-0.03353391, -0.83628902],
[ 1.18684903, -1.34218285, 0.18664186, ..., -0.46531516,
-0.09240499, 0.4222004 ],
...,
[ 1.58648943, -0.72478134, -1.56295222, ..., 0.3469342 ,
-0.03055414, -0.52177644],
[ 0.78221312, -0.85106801, 0.18664186, ..., 0.02499488,
0.06150916, -0.30340741],
[-1.43579109, 0.99645926, 1.85670895, ..., -0.22852947,
-0.09586294, 0.10180567]])

I have pasted multiple note books to try but it ends up the same, can you please tell me what I am doing wrong?

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