User Oliver Foster

3 votes

scikit-learn classification report's f1 accuracy?

answered Dec 11, 2020 at 2:13

2 votes

Accepted

Building a summary string in a Pandas groupby (Possibly cross-tab or pivot-table question)

answered Dec 19, 2020 at 22:45

2 votes

How to improve results in classification problems (SVM, Logistic Regression and MultiNaive Bayes)?

answered Oct 12, 2020 at 0:31

2 votes

Accepted

Python sklearn model.predict() gives me different results depending on the amount of data

answered Oct 14, 2020 at 16:56

2 votes

Accepted

why R-square always keep increasing

answered Oct 15, 2020 at 12:21

2 votes

Confusion Matrix vs AUC Confusion with Random Forest

answered Oct 16, 2020 at 20:47

2 votes

Accepted

Same confusion matrix when changing DecisionTreeClassifier parameters

answered Oct 22, 2020 at 20:38

2 votes

Accepted

Model to choose with Cross Validation or not?

answered Oct 30, 2020 at 23:11

2 votes

What is the shape of the vector after it passes through the TfidfVecorizer fit_transform() method?

answered Nov 1, 2020 at 22:20

2 votes

SKLEARN GridSearchCV hinting higher accuracy than Pipeline but with same parameters as Pipeline estimators

answered Nov 1, 2020 at 23:58

2 votes

Accepted

Machine Learning validation data returns 100% accuracy

answered Oct 29, 2020 at 18:13

1 vote

Predicting results of tennis matches based on historical data

answered Oct 29, 2020 at 23:08

1 vote

Can I use survival analysis model to predict probability of an item sold

answered Dec 5, 2020 at 23:40

1 vote

Accepted

For very simple linear regression can we quantify the prediction accuracy hit between using one hot encoding and simple numerical mapping?

answered Dec 9, 2020 at 0:07

1 vote

Accepted

How to determine layers structures appropriate for a specific application?

answered Oct 23, 2020 at 0:31

1 vote

Pandas get_dummies() rows dropping after joining back with X

answered Sep 2, 2020 at 14:50

1 vote

Accepted

Correctness of a ROC Curve

answered Oct 24, 2020 at 15:08

1 vote

Why does reducing the n_estimators in RandomForestClassifier improve accuracy?

answered Oct 19, 2020 at 23:35

1 vote

How can data science teams inside businesses measure costs and efficiency of their technical work?

answered Oct 20, 2020 at 18:40

1 vote

What are the Most Dissimilar MNIST Digits?

answered Oct 21, 2020 at 18:44

1 vote

Accepted

Is there a RandomForest implementation that handles categorical data without encoding in python?

answered Oct 22, 2020 at 14:41

1 vote

Accepted

Backpropagation and gradient descent

answered Oct 15, 2020 at 16:34

1 vote

Accepted

Tree-based algorithms and ordinal features

answered Oct 15, 2020 at 21:03

1 vote

Accepted

Rolling window features for multiclass classification

answered Oct 16, 2020 at 12:27

1 vote

Does using your test set ultimately burn your data set in case of failure?

answered Oct 16, 2020 at 12:37

1 vote

2-label dataset for 3-label classifier?

answered Oct 16, 2020 at 15:01

1 vote

Accepted

Equation of a Multi-Layer Perceptron Network

answered Oct 14, 2020 at 19:59

1 vote

Accepted

Can we use feature selection and dimensionality reduction together?

answered Oct 14, 2020 at 15:48

1 vote

Accepted

Terminology in machine learning: exogenous features vs external features

answered Oct 14, 2020 at 15:52

1 vote

When should i use fit(x_train) and when should i fit( x_train,y_train)?

answered Dec 31, 2020 at 3:06

Stack Exchange Network

43 Answers

scikit-learn classification report's f1 accuracy?

Building a summary string in a Pandas groupby (Possibly cross-tab or pivot-table question)

How to improve results in classification problems (SVM, Logistic Regression and MultiNaive Bayes)?

Python sklearn model.predict() gives me different results depending on the amount of data

why R-square always keep increasing

Confusion Matrix vs AUC Confusion with Random Forest

Same confusion matrix when changing DecisionTreeClassifier parameters

Model to choose with Cross Validation or not?

What is the shape of the vector after it passes through the TfidfVecorizer fit_transform() method?

SKLEARN GridSearchCV hinting higher accuracy than Pipeline but with same parameters as Pipeline estimators

Machine Learning validation data returns 100% accuracy

Predicting results of tennis matches based on historical data

Can I use survival analysis model to predict probability of an item sold

For very simple linear regression can we quantify the prediction accuracy hit between using one hot encoding and simple numerical mapping?

How to determine layers structures appropriate for a specific application?

Pandas get_dummies() rows dropping after joining back with X

Correctness of a ROC Curve

Why does reducing the n_estimators in RandomForestClassifier improve accuracy?

How can data science teams inside businesses measure costs and efficiency of their technical work?

What are the Most Dissimilar MNIST Digits?

Is there a RandomForest implementation that handles categorical data without encoding in python?

Backpropagation and gradient descent

Tree-based algorithms and ordinal features

Rolling window features for multiclass classification

Does using your test set ultimately burn your data set in case of failure?

2-label dataset for 3-label classifier?

Equation of a Multi-Layer Perceptron Network

Can we use feature selection and dimensionality reduction together?

Terminology in machine learning: exogenous features vs external features

When should i use fit(x_train) and when should i fit( x_train,y_train)?