Skip to main content
Share Your Experience: Take the 2024 Developer Survey

# Questions tagged [ridge-regression]

A regularization method for regression models that shrinks coefficients towards zero.

28 questions
Filter by
Sorted by
Tagged with
0 votes
0 answers
18 views

### Comparing ROC curve and AUC score of different models for binary classification

I am doing a binary classification problem. The dataset has around 100K records with 40 variables. I have tried different ML models. First, I used a logistic regression model and ended up getting a ...
0 votes
0 answers
50 views

### Help with multinomial logistic regression

I am a data science student and have the opportunity to work on an article regrading cardiac arrests in our country. For now I performed the multinomial regression model and I also plan on doing a ...
1 vote
0 answers
31 views

### With infinite observations, would the weights resulting from ridge regression be the same as simple linear regression?

As the number of observations approaches infinity, do the weights of a linear regression approach the weights of a linear regression with L2 penalty?
• 111
0 votes
0 answers
22 views

### Regression model in Python for engineering equipment end of life prediction - improvements and suggestions

I am trying to build a ML prediction model that uses the calculated remaining part life, machine power consumption, and other related process parameters specific to the equipment in question, to ...
0 votes
0 answers
116 views

### Why does SGDRegressor with partial_fit not converge to the same R2 as RidgeCV

I have a dataframe of about 200 features and 1M rows that I can train a RidgeCV model and get an R2 of about 0.01 I'd like to scale up my training to 5M or 10M rows but that won't fit in memory for me ...
0 votes
1 answer
28 views

### How to extract MSEP or RMSEP from lassoCV?

I'm doing lasso and ridge regression in R with the package chemometrics. With ridgeCV it is easy to extract the SEP and MSEP values by ...
0 votes
1 answer
189 views

### Why are my ridge regression coefficients completely different from ordinary linear regression coefficients in MATLAB?

I am attempting to implement my own Ridge Regression algorithm and I am trying to achieve similar coefficients found in a MATLAB tutorial on regression. Specifically, on the MATLAB tutorial page you ...
• 101
1 vote
1 answer
376 views

### What's the correct cost function for Linear Regression

As we all know the cost function for linear regression is: Where as when we use Ridge Regression we simply add lambda*slope**2 but there I always seee the below as cost function of linear Regression ...
• 193
1 vote
2 answers
104 views

### What (linear) model is common practice to use on sample size of 500 with 26 features?

I have a training data set of 500 people and 26 features and I'm trying to develop a regression model. A possibility is to derive more features of course. I'm considering the following models: Linear ...
• 11
1 vote
1 answer
701 views

### The effect of the λ in the Ridge regression

Why by increasing value of λ in Ridge estimator the slope of the line is decreasing? How exactly λ affects to the y = kx + b?
• 11
3 votes
2 answers
4k views

### Constraining linear regressor parameters in scikit-learn?

I'm using sklearn.linear_model.Ridge to use ridge regression to extract the coefficients of a polynomial. However, some of the coefficients have physical ...
• 31
1 vote
1 answer
70 views

### Why we take $\alpha\sum B_j^2$ as penalty in Ridge Regression?

$$RSS_{RIDGE}=\sum_{i=1}^n(\hat{y_i}-y_i)^2+\alpha\sum_{i=1}^nB_j^2$$ Why we are taking $\alpha\sum B_j^2$ as a penalty here? We are adding this term for minimizing variance in Machine Learning Model. ...
-1 votes
1 answer
109 views

### Lack of standardization in Kaggle jupyter notebooks when using lasso/ridge?

I've recently started using Kaggle, and I've noticed that for a lot of these jupyter notebooks written by others, when they use Ridge/Lasso, they don't standardize the non-categorical numerical ...
1 vote
1 answer
353 views

### Do the benefits of ridge regression diminish with larger datasets?

I have a question about ridge regression and about its benefits (relative to OLS) when the datasets are big. Do the benefits of ridge regression disappear when the datasets are larger (e.g. 50,000 vs ...
1 vote
2 answers
756 views

### What is the meaning of the sparsity parameter

Sparse methods such as LASSO contain a parameter $\lambda$ which is associated with the minimization of the $l_1$ norm. Higher the value of $\lambda$ ($>0$) means that more coefficients will be ...
• 541
2 votes
3 answers
632 views

### how Lasso regression helps to shrinks the coefficient to zero and why ridge regression dose not shrink the coefficient to zero?

How does Lasso regression help with feature selection of model by making the coefficient shrink to zero? I could see few below with below diagram. Can any please explain in simple terms how to ...
• 1,471
1 vote
0 answers
18 views

### what other metrics can i use to estimate quality of the model predicting income range - interval estimation task?

I trained a model that predicts customer's income given the features: age, declared income number of oustanding instalment, overdue total amount active credit limit, total credit limit total amount ...
• 111
2 votes
2 answers
3k views

### How do standardization and normalization impact the coefficients of linear models?

One benefit of creating a linear model is that you can look at the coefficients the model learns and interpret them. For example, you can see which features have the most predictive power and which do ...
• 278
1 vote
1 answer
129 views

### Why is Regularization after PCA or Factor Analysis a bad idea?

I have done Factor Analysis on my data and applied various machine learning models on it. I particularly find it giving high MSE value for Ridge and Lasso Regression compared to other models. I want ...
• 23
1 vote
1 answer
910 views

### How is learning rate calculated in sklearn Lasso regression?

I was applying different regression models to Kaggle Housing dataset for advanced regression. I am planning to test out lasso, ridge and elastic net. However, none of these models have learning rate ...
1 vote
1 answer
711 views

### Is there a reference data set for ridge regression?

In order to test an algorithm, I am looking for a reference data set for ridge regression in research papers. Kind of like the equivalent of MNIST but for regression.
• 23
4 votes
2 answers
2k views

### Extremely high MSE/MAE for Ridge Regression(sklearn) when the label is directly calculated from the features

Edit: Removing TransformedTargetRegressor and adding more info as requested. Edit2: There were 18K rows where the relation did not hold. I'm sorry :(. After ...
• 187
3 votes
1 answer
552 views

### Does ridge regression always reduce coefficients by equal proportions?

Below is an excerpt from the book Introduction to statistical learning in R, (chapter-linear model selection and regularization) "In ridge regression, each least squares coefficient estimate is ...
• 195
1 vote
1 answer
195 views

### Dividing the weights obtained on an already standardized data set by the standard deviation of the features? (Ridge regression)

I'm trying to understand a code snippet from my lecture on Machine Learning (see the code below). It extracts the mean and standard deviation of the features and uses them to 'normalize' (...
• 133
3 votes
3 answers
8k views

### Can ridge regression be used for feature selection?

I'm trying to figure out whether using Ridge Regression for regularization can be used to cause a more sparse hypothesis however to me it seems like ridge will never actually bring any coefficients to ...
• 197
3 votes
1 answer
203 views

### Does it matter whether we put regularization parameter ($C$) with error or weight term in Kernel ridge regression?

Kernel ridge regression associate a regularization parameter $C$ with weight term ($\beta$): \$\text{Minimize}: {KRR}=C\frac{1}{2} \left \|\beta\right\|^{2} + \frac{1}{2}\sum_{i=1}^{\mathcal{N}}\left\|...
1 vote
1 answer
338 views

### How to improve Regression Model with High Training Performance and Low Test Performance

I am performing regression analysis on some data. I keep getting very high training score and low test score. My code is below, what can i do to enhance it? Thank you in advance. ...
• 715
4 votes
2 answers
3k views

### What does a negative coefficient of determination mean for evaluating ridge regression?

Judging by the negative result being displayed from my ridge.score() I am guessing that I am doing something wrong. Maybe someone could point me in the right ...
• 1,633