Elastic-Net | fast version of elastic net r

 by   CUFESAM C++ Version: Current License: No License

kandi X-RAY | Elastic-Net Summary

kandi X-RAY | Elastic-Net Summary

Elastic-Net is a C++ library. Elastic-Net has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

A fast version of elastic net r-package based on RcppArmadillo
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              Elastic-Net has a low active ecosystem.
              It has 7 star(s) with 3 fork(s). There are 3 watchers for this library.
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              It had no major release in the last 6 months.
              Elastic-Net has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of Elastic-Net is current.

            kandi-Quality Quality

              Elastic-Net has no bugs reported.

            kandi-Security Security

              Elastic-Net has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              Elastic-Net does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
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              Without a license, all rights are reserved, and you cannot use the library in your applications.

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              Elastic-Net releases are not available. You will need to build from source code and install.
              Installation instructions, examples and code snippets are available.

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            Elastic-Net Key Features

            No Key Features are available at this moment for Elastic-Net.

            Elastic-Net Examples and Code Snippets

            No Code Snippets are available at this moment for Elastic-Net.

            Community Discussions

            QUESTION

            how to repeat hyperparameter tuning (alpha and/or lambda) of glmnet in mlr3
            Asked 2021-Mar-22 at 09:34

            I would like to repeat the hyperparameter tuning (alpha and/or lambda) of glmnet in mlr3 to avoid variability in smaller data sets

            In caret, I could do this with "repeatedcv"

            Since I really like the mlr3 family packages I would like to use them for my analysis. However, I am not sure about the correct way how to do this step in mlr3

            Example data

            ...

            ANSWER

            Answered 2021-Mar-21 at 22:36

            Repeated hyperparameter tuning (alpha and lambda) of glmnet can be done using the SECOND mlr3 approach as stated above. The coefficients can be extracted with stats::coef and the stored values in the AutoTuner

            Source https://stackoverflow.com/questions/66696405

            QUESTION

            Repeated cv in a mrl3 ensemble model
            Asked 2021-Mar-21 at 22:14

            I have a beautiful mlr3 ensemble model (combined glmnet and glm) for binary prediction, see details here

            ...

            ANSWER

            Answered 2021-Mar-21 at 22:14

            Thanks to missuse's comment, his marvellous tutorial (Tuning a stacked learner) and mb706's comments I think I could solve my question.

            Replace "classif.cv_glmnet" with "classif.glmnet"

            Source https://stackoverflow.com/questions/66727339

            QUESTION

            Why does my metricbeat extension ignore my ActiveMQ broker host configuration in Kibana docker?
            Asked 2021-Mar-17 at 22:23

            I'm trying to set up a local Kibana instance with ActiveMQ for testing purposes. I've created a docker network called elastic-network. I have 3 containers in my network: elasticsearch, kibana and finally activemq. In my kibana container, I downloaded metric beats using the following shell command

            ...

            ANSWER

            Answered 2021-Mar-17 at 22:13

            After looking through the documentation, I saw that for Linux, unlike the other OS, you also have to change the configuration in the module directory module.d/activemq.yml, not just the metricbeat.reference.yml

            Source https://stackoverflow.com/questions/66681019

            QUESTION

            Why do I get probabilities outside 0 and 1 with my Logistic regularized glmnet code?
            Asked 2021-Mar-14 at 15:20
            library(tidyverse)
            library(caret)
            library(glmnet)
            
            creditdata <- read_excel("R bestanden/creditdata.xlsx")
            df <- as.data.frame(creditdata)
            df <- na.omit(df)
            df$married <- as.factor(df$married)
            df$graduate_school <- as.factor(df$graduate_school)
            df$high_school <- as.factor(df$high_school)
            df$default_payment_next_month <- as.factor(df$default_payment_next_month)
            df$sex <- as.factor(df$sex)
            df$single <- as.factor(df$single)
            df$university <- as.factor(df$university)
            set.seed(123)
            training.samples <- df$default_payment_next_month %>% 
            
            
            
            
            createDataPartition(p = 0.8, list = FALSE)
            train.data  <- df[training.samples, ]
            test.data <- df[-training.samples, ]
            x <- model.matrix(default_payment_next_month~., train.data)[,-1]
            y <- ifelse(train.data$default_payment_next_month == 1, 1, 0)
            
            cv.lasso <- cv.glmnet(x, y, alpha = 1, family = "binomial")
            lasso.model <- glmnet(x, y, alpha = 1, family = "binomial",
                                  lambda = cv.lasso$lambda.1se)
            x.test <- model.matrix(default_payment_next_month ~., test.data)[,-1]
            probabilities <- lasso.model %>% predict(newx = x.test)
            predicted.classes <- ifelse(probabilities > 0.5, "1", "0")
            observed.classes <- test.data$default_payment_next_month
            mean(predicted.classes == observed.classes)
            
            ...

            ANSWER

            Answered 2021-Mar-14 at 13:47

            Just like for glm, by default the predict function for glmnet returns predictions on the scale of the link function, which aren't probabilities.

            To get the predicted probabilities, add type = "response" to the predict call:

            Source https://stackoverflow.com/questions/66624975

            QUESTION

            How to name to the dropdown menu in Dash/Plotly
            Asked 2020-Sep-09 at 22:30

            I'm pretty new to dash and I'm trying to figure out how do I place names above my dropdown menus and sliders and provide some gap between the them. I'm geeting these names "Dataset","model types" on the side instead of on the top of the dropdowns.This is the code I have been using :

            ...

            ANSWER

            Answered 2020-Sep-09 at 22:30

            QUESTION

            Question on ElasticNet algorithm implemented in Cleverhans
            Asked 2020-Sep-06 at 06:41

            I'm trying to use the Elastic-Net algorithm implemented in Cleverhans to generate adversarial samples in a classification task. The main problem is that i'm trying to use it in a way to obtain an higher confidence at classification time on a target class (different from the original one) but i'm not able to reach good results. The system that i'm trying to fool is a DNN with a softmax output on 10 classes.

            For instance:

            1. Given a sample of class 3 i want to generate an adversarial sample of class 0.
            2. Using the default hyperparameters implemented in the ElasticNetMethod of cleverhans i'm able to obtain a succesful attack, so the class assigned to the adversarial sample became the class 0, but the confidence is quite low(about 30%). This also happens trying different values for the hyperparameters.
            3. My purpose is to obtain a quite higher confidence (at least 90%).
            4. For other algorithm like "FGSM" or "MadryEtAl" i'm able to reach this purpose creating a loop in which the algorithm is applied until the sample is classified as the target class with a confidence greater than 90%, but i can't to apply this iteration on the EAD algorithm because at each step of the iteration it yields the adversarial sample generated at the first step, and in the following iterations it remains unchanged. (I know that this may happens because the algorithm is different from the other two metioned, but i'm trying to find a solution to reach my purpose).

            This is the code that i'm actually using to generate adversarial samples.

            ...

            ANSWER

            Answered 2020-Sep-06 at 06:41

            For anyone intrested in this problem the previous code can be modified in this way to works properly:

            FIRST SOLUTION:

            Source https://stackoverflow.com/questions/63688270

            QUESTION

            Extract the coefficients for the best tuning parameters of a glmnet model in caret
            Asked 2019-Sep-08 at 06:38

            I am running elastic net regularization in caret using glmnet.

            I pass sequence of values to trainControl for alpha and lambda, then I perform repeatedcv to get the optimal tunings of alpha and lambda.

            Here is an example where the optimal tunings for alpha and lambda are 0.7 and 0.5 respectively:

            ...

            ANSWER

            Answered 2019-Sep-08 at 06:34

            After a bit of playing with your code I find it very odd that glmnet train chooses different lambda ranges depending on the seed. Here is an example:

            Source https://stackoverflow.com/questions/48079660

            QUESTION

            Keras custom loss function (elastic net)
            Asked 2019-Aug-02 at 06:25

            I'm try to code Elastic-Net. It's look likes:

            And I want to use this loss function into Keras:

            ...

            ANSWER

            Answered 2019-Aug-02 at 06:24

            You can simply use built-in weight regularization in Keras for each layer. To do that you can use kernel_regularizer parameter of the layer and specify a regularizer for that. For example:

            Source https://stackoverflow.com/questions/57304185

            QUESTION

            Ridge regression vs Lasso Regression
            Asked 2019-May-25 at 06:29

            Is Lasso regression or Elastic-net regression always better than the ridge regression?

            I'm a newbie in machine learning. I've conducted these regressions on a few data sets and I've always got the same result that the mean squared error is the least in lasso regression. Is this a mere coincidence or is this true in any case?

            ...

            ANSWER

            Answered 2019-May-25 at 06:28

            I think this question might be better suited for the cross-validation sub-forum.

            On the topic, James, Witten, Hastie and Tibshirani write in their book "An Introduktion to Statistical Learning":

            These two examples illustrate that neither ridge regression nor the lasso will universally dominate the other. In general, one might expect the lasso to perform better in a setting where a relatively small number of predictorshave substantial coefficients, and the remaining predictors have coefficients that are very small or that equal zero. Ridge regression will perform better when the response is a function of many predictors, all with coefficients of roughly equal size. However, the number of predictors that is related to the response is never known apriori for real data sets. A technique such as cross-validation can be used in order to determine which approach is betteron a particular data set. (chapter 6.2)

            Source https://stackoverflow.com/questions/56302294

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install Elastic-Net

            install devtools
            install Rcpp and RcppArmadillo
            install fasterElasticNet
            install fasterElasticNet without openmp supporting Usually using clang with xcode

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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