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Tag: gridsearchcv

Error while doing SVR for multiple outputs

Trying to do SVR for multiple outputs. Started by hyper-parameter tuning which worked for me. Now I want to create the model using the optimum parameters but I am getting an error. How to fix this? Output: Trying to create a model using the output: Error: Answer Please consult the MultiOutputRegressor docs. The regressor you got back is the model.

How do I make sure GridSearchCV first does the cross split and then the imputing?

I have a GridSearchCV, with a pipeline that looks something like this: my GridSearchCV looks like this: with Cross Validation = 5 So, how do I ensure that I split the data first, and then impute in the most frequent? Answer GridSearchCV will run roughly like this: You can be sure that SimpleImputer and StandardScaler will do .fit() and .transform()

Error with precision_score of XGBoost classifier with RandomizedSearchCV

I’m trying to make a classifier with XGBoost, I fit it with RandomizedSearchCV. Here is the code of my function: When I run the code, I get an error, reported below: When I do the same thing but with GridSearchCV instead of RandomizedSearchCV, the code runs without any problems! Answer It’s not precision_score it’s ‘precision_score’ (with ‘ ‘), like this-

RandomizedSearchCV: All estimators failed to fit

I am currently working on the “French Motor Claims Datasets freMTPL2freq” Kaggle competition (https://www.kaggle.com/floser/french-motor-claims-datasets-fremtpl2freq). Unfortunately I get a “NotFittedError: All estimators failed to fit” error whenever I am using RandomizedSearchCV and I cannot figure out why that is. Any help is much appreciated. The first five rows of the original dataframe data_freq look like this: The error I get is

pipeline for RandomOversampler, RandomForestClassifier & GridSearchCV

I am working on a binary text classification problem. As the classes are highly imbalanced, I am using sampling techniques like RandomOversampler(). Then for classification I would use RandomForestClassifier() whose parameters need to be tuned using GridSearchCV(). I am trying to create a pipeline to do these in order but failed so far. It throws invalid parameters. Answer The parameters

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