Tag: cross-validation

33 How does the validation_split parameter of Keras' fit function work? 2018-09-30T06:30:57.810

30 How to use the output of GridSearch? 2017-08-01T13:20:51.307

30 What is the difference between bootstrapping and cross-validation? 2018-05-28T13:16:29.283

28 Why use both validation set and test set? 2017-04-13T19:33:53.090

27 Does modeling with Random Forests require cross-validation? 2015-07-20T13:42:21.283

27 Merging multiple data frames row-wise in PySpark 2016-04-22T04:27:45.507

18 How to calculate the fold number (k-fold) in cross validation? 2018-02-22T05:23:43.347

15 Can overfitting occur even with validation loss still dropping? 2016-11-20T13:43:19.647

13 How to choose a classifier after cross-validation? 2016-09-13T03:23:24.483

12 Cross-validation: K-fold vs Repeated random sub-sampling 2014-06-20T17:57:46.363

12 K-fold cross validation when using fit_generator and flow_from_directory() in Keras 2018-08-16T08:59:28.223

11 Overfitting/Underfitting with Data set size 2016-01-12T09:57:38.883

10 Validation vs. test vs. training accuracy. Which one should I compare for claiming overfit? 2019-03-13T19:14:51.783

9 How to approach the numer.ai competition with anonymous scaled numerical predictors? 2016-06-29T16:11:34.107

9 Nested cross-validation and selecting the best regression model - is this the right SKLearn process? 2016-08-04T01:28:45.307

9 Will cross validation performance be an accurate indication for predicting the true performance on an independent data set? 2017-03-22T04:04:33.683

9 Cross validation for highly imbalanced data with undersampling 2019-02-04T16:32:21.823

8 Which cross-validation type best suits to binary classification problem 2014-08-06T08:41:44.967

8 Cross Validation in Keras 2016-05-13T14:39:51.430

8 Machine Learning models in production environment 2016-08-11T17:48:38.837

8 How to estimate GridSearchCV computing time? 2018-03-24T14:10:05.110

8 Using Cross Validation technique for a CNN model 2019-03-22T15:40:52.257

8 Cross validation Vs. Train Validate Test 2019-05-26T06:15:52.227

7 Why use mean revenue in a split test? 2014-07-16T07:47:48.603

7 Is there a way of performing stratified cross validation using xgboost module in python? 2015-08-20T09:53:43.280

7 Why k-fold cross validation (CV) overfits? Or why discrepancy occurs between CV and test set? 2017-03-01T22:10:48.180

7 Stratify on regression 2018-06-14T08:48:19.513

7 Log loss vs accuracy for deciding between different learning rates? 2018-10-17T13:53:00.337

7 Which is first ? Tuning the parameters or selecting the model 2018-11-27T21:00:11.183

7 How fbprophet cross validation works 2020-03-06T14:04:56.513

7 What needs to be done to make n_jobs work properly on sklearn? in particular on ElasticNetCV? 2020-05-15T17:17:12.983

7 What is the proper way to use early stopping with cross-validation? 2020-05-17T15:15:41.740

7 ground truth fit is worse than cross validated fit on noisy data? 2020-07-06T08:52:14.423

7 Time-series grouped cross-validation 2020-07-14T07:05:59.983

6 When do I have to use aucPR instead of auROC? (and vice versa) 2015-11-24T11:50:46.290

6 Linear kernel in SVM performing much worse than RBF or Poly 2015-12-20T17:09:48.473

5 How is cross validation used to prune a decision tree 2015-10-25T22:05:51.123

5 On coursera what exactly does Andrew Ng say in videos Lectures 60 & 61 of machine learning? 2016-02-01T12:58:14.967

5 Cross validation when training neural network? 2016-04-09T22:46:51.333

5 Training and cross validation error curves 2016-09-26T06:12:26.650

5 ICD-10 codes in Machine Learning 2017-06-07T20:41:44.300

5 Overfitting XGBoost 2017-10-10T13:21:20.900

5 Train loss vs validation loss 2018-04-26T20:57:46.517

5 Does a precision score increasing with a higher number of folds mean the model will improve with more data? 2019-02-13T18:02:00.433

5 What is GridSearchCV doing after it finishes evaluating the performance of parameter combinations that takes so long? 2019-02-19T12:48:19.023

5 Can we use k fold Cross Validation without any extra (excluded) Test Set? 2019-04-19T08:04:36.913

5 Why could an overfitted CNN model have a higher validation accuracy? 2019-06-15T16:54:35.773

5 Why is 10 considered the default value for k-fold cross-validation? 2020-06-10T15:16:23.277

5 Confused AUC ROC score 2020-07-20T14:55:01.023

5 Why you shouldn't upsample before cross validation 2020-09-22T11:40:24.587

5 Can one perform Feature Selection on a subset of training data? 2020-11-04T04:01:18.317

4 Assessing significance / confidence of a crossvalidated performance measure 2016-01-28T13:13:52.680

4 Is it possible to create feature groups in Orange? 2016-03-22T09:42:15.517

4 What is a better approach for cross-validation with time-related predictors 2016-11-30T01:50:16.640

4 Cross validation plus oversampling? 2017-01-11T03:10:45.100

4 Found input variables with inconsistent numbers of samples 2017-01-31T19:59:46.387

4 Cross-validation of a cross-validated stacking ensemble? 2017-03-02T18:42:44.680

4 How to implement Python's MLPClassifier with gridsearchCV? 2017-06-16T14:13:34.620

4 python xgboost DMatrix - get feature values or convert to np.array 2017-07-11T10:55:04.823

4 Which is better: Out of Bag (OOB) or Cross-Validation (CV) error estimates? 2017-08-04T10:50:38.383

4 Cross Validation how to determine when to Early Stop? 2018-03-02T21:44:30.657

4 Why is cross-validation score so low? 2018-04-23T16:53:58.853

4 cross_val_score meaning 2018-07-06T19:26:58.360

4 Using K-fold cross-validation in Keras on the data of my model 2018-09-10T06:11:15.847

4 Folds in Cross validation 2018-10-29T10:29:39.493

4 Oversampling before Cross-Validation, is it a problem? 2019-01-21T12:02:00.250

4 Overfitting - how to detect it and reduce it? 2019-03-04T15:09:30.270

4 Why does CV yield lower score? 2019-04-03T13:36:49.120

4 Interpretability of RMSE and R squared scores on cross validation 2019-07-24T15:57:29.337

4 help understanding nested cross validation 2019-08-08T23:09:44.147

4 Should I perform cross validation only on the training set? 2019-08-17T05:16:24.687

4 sklearn's cross_validate does not work with catboost 2019-08-25T21:37:02.010

4 New parameters in final training 2019-12-13T12:41:32.057

4 ROC AUC score is much less than average cross validation score 2020-02-10T12:43:55.703

4 Cross Validation - Why does more folds increase variation? 2020-02-23T17:21:02.087

4 Does k fold cross validation become less useful when number of observations is very large? 2020-02-29T15:47:03.900

4 Robustness of hyperparameter tuning 2020-05-23T16:12:18.410

4 Can a novelty detection model overfit? 2020-09-27T14:12:06.757

3 Avoid iterations while calculating average model accuracy 2014-08-06T09:03:20.857

3 How to represent ROC curve when using Cross-Validation 2016-10-06T10:03:15.077

3 Check Accuracy of Model Provided by Consultant 2016-11-30T07:00:23.107

3 Model selection and assessment using leave-one-out cross validation 2017-05-22T04:35:15.383

3 Intuitive interpretation of ratios between training set scores and validation set scores 2017-06-25T20:30:43.327

3 What to do after selecting a model with cross-validation? 2017-09-14T08:27:22.043

3 Using already trained classifiers in Orange 2017-09-28T12:22:50.303

3 Restrictions on my skewed validation data 2017-11-03T15:05:54.343

3 What stopping metric to chose to optimize 'sensitivity' for a GBM in H2O? 2017-11-30T14:25:55.480

3 Class weight ineffective in sklearn 2018-01-05T14:41:44.903

3 Bootstrapping or Randomly Dividing Dataset to reduce variance? 2018-01-11T12:21:11.653

3 StratifiedKFold: ValueError: Supported target types are: ('binary', 'multiclass'). Got 'multilabel-indicator' instead 2018-01-29T21:00:43.117

3 What is the appropriate name for this dataset? 2018-01-30T13:30:44.470

3 Non Deterministc Dimensionality reduction 2018-02-18T18:44:06.080

3 Why can't I choose my hyper-parameter in the training set? 2018-05-14T20:32:13.697

3 Validation of a model generated by automated deep learning system 2018-05-23T09:55:22.327

3 GridSearchCV results are different to directly applied default model (SVM) 2018-05-31T14:48:32.400

3 Hyper parameters and ValidationSet 2018-06-07T05:06:55.997

3 K-fold crossvalidation: how do MSE average and variance vary with K? 2018-08-19T16:20:17.163

3 Convolutional neural network with cross validation in Keras 2018-09-12T15:24:24.840

3 Metrics to determine K in K-cross fold validation 2018-11-05T21:03:41.980