basic Python question

[joseph pareti]

yet, something is still unclear; in Python you can do things like:

*clf0.fit(X_train, y_train)*

which is not the way I programmed in other languages where a left-hand side
and a right hand side is required.

Am Fr., 8. Mai 2020 um 21:52 Uhr schrieb joseph pareti <
joepareti54 at gmail.com>:

> yes, it is random forest classifier from scikit learn. Thank you.
>
> Am Fr., 8. Mai 2020 um 21:50 Uhr schrieb MRAB <python at mrabarnett.plus.com
> >:
>
>> On 2020-05-08 20:02, joseph pareti wrote:
>> > In general I prefer doing:
>> >
>> >
>> > X_train, X_test, y_train, y_test = train_test_split(X, y,
>> test_size=0.33, random_state=42)
>>  >clf = RandomForestClassifier(n_estimators = 100, max_depth=
>> > None) *clf_f = clf.fit(X_train, y_train)* predicted_labels =
>> clf_f.predict(
>> > X_test) score = clf.score(X_test, y_test) score1 =
>> metrics.accuracy_score(
>> > y_test, predicted_labels)
>> >
>> >
>> > rather than:
>> >
>> > X_train, X_test, y_train, y_test = train_test_split(X, y,
>> test_size=0.33,
>> > random_state=42) clf0=RandomForestClassifier(n_estimators=100,
>> max_depth=
>> > None) *clf0.fit(X_train, y_train)* y_pred =clf0.predict(X_test) score=
>> > metrics.accuracy_score(y_test, y_pred)
>> >
>> >
>> > Are the two codes really equivalent?
>> >
>> You didn't give any context and say what package you're using!
>>
>> After searching for "RandomForestClassifier", I'm guessing that you're
>> using scikit.
>>
>>  From the documentation here:
>>
>>
>> https://scikit-learn.org/stable/modules/generated/sklearn.ensemble.RandomForestClassifier.html#sklearn.ensemble.RandomForestClassifier.fit
>>
>> it says:
>>
>>      Returns: self : object
>>
>> so it looks like clf.fit(...) returns clf.
>>
>> That being the case, then, yes, they're equivalent.
>> --
>> https://mail.python.org/mailman/listinfo/python-list
>>
>
>
> --
> Regards,
> Joseph Pareti - Artificial Intelligence consultant
> Joseph Pareti's AI Consulting Services
> https://www.joepareti54-ai.com/
> cell +49 1520 1600 209
> cell +39 339 797 0644
>


-- 
Regards,
Joseph Pareti - Artificial Intelligence consultant
Joseph Pareti's AI Consulting Services
https://www.joepareti54-ai.com/
cell +49 1520 1600 209
cell +39 339 797 0644