polyreg | regtools PACKAGE , WHICH WRAPS polyreg | Machine Learning library
kandi X-RAY | polyreg Summary
kandi X-RAY | polyreg Summary
NOTE: IT IS RECOMMENDED TO USE THE FUNCTIONS qePolyLin() and qePolyLog() IN THE regtools PACKAGE, WHICH WRAPS polyreg. Development of a package to automate formation and evaluation of multivariate polynomial regression models. Motivation: A simpler, equally effective alternative to neural networks. in Polynomial Regression As an Alternative to Neural Nets, by Cheng, Khomtchouk, Matloff and Mohanty, 2018. Other than the various cross-validation functions, the main functions are polyfit() and predict.polyFit(). One can fit either regression or classification models, with an option to perform PCA for dimension reduction on the predictors/features. Example: Programmer/engineer 2000 Census data, Silicon Valley. Built in to the latest version of the regtools package. Install package or download directly here. In the former case, getPE() reads in the dataset and does some preprocessing, producing a data frame pe. Example: Vertebral Column data from the UC Irvine Machine Learning Repository. Various spinal measurements, with three conditions, Normal, Disk Hernia and Spondylolisthesis. Let's predict the conditions. Forward stepwise regression is also available with FSR which also accepts polynomial degree and interaction as inputs. FSR() contains a handful of parameters which make the function more or less 'optimistic' about estimating new models. threshold_include sets the minimum improvment on the best model to include new features (default 0.01 in adjusted R^2^ for continuous outcomes and accuracy for multinomial outcomes, with the same adjustment applied). threshold_estimate, is the treshold to keep adding additional features on the same scale. For categorical outcomes, a linear probability model can also be estimated via Ordinary Least Squares for speed.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of polyreg
polyreg Key Features
polyreg Examples and Code Snippets
Community Discussions
Trending Discussions on polyreg
QUESTION
I'm running below code to run polynomial regression on independent variable (xhp) and dependent variable (yp). Problem is in the output I'm not getting smooth curved lines instead getting straight lines. Enclosed is the snippet of the output.
Also, with the predicted price on degree of freedom 3 here's how the data looks in a DataFrame which seems as the sorting is also in place.
Python Code: ...ANSWER
Answered 2022-Jan-27 at 22:27You only have 10 points. That doesn't give you a smooth curve. If you want a smooth curve, use more points:
QUESTION
I am getting a flat regression even with a 10th degree regresor. But If I change the date vaues to numeric then the regression works! Anybody knows why?
...ANSWER
Answered 2021-Mar-23 at 07:52Linear Regression imply the associating of numerical values to a calculated coefficient. What happens next is that the values are multiplied by the coefficients, which in turn gives you an output which is used for predictions.
BUT, in your case, one of the variables is a date and, as explained above, the regression model doesn't know what to do with it. As you noticed, you need to convert them to numerical data.
QUESTION
After running k-means on my data and dividing my observations into different clusters i've been trying to now plot my polynomial regression. However it's quite messy and not how i expected a polynomial line to look like. I understand that sorting x would propably help me fix that problem. But how do i sort x axis? I've searched for an answer but i haven't found anything that could help me.I'm new to python and i have been trying to get a good plot for several weeks now and it has been driving me crazy.
code:
...ANSWER
Answered 2020-May-01 at 15:21I don't know why you would think polynomial regression has any business being done on that data, but if you want to plot its outcome it makes much more sense to predict against a nice, evenly spaced set of points instead of x_train
. Try this instead of your line that plots the blue line:
QUESTION
I'm trying to impute missing genotype data using the R package mice. The first dataset I have consists of a genotype matrix of size 1851x47992 consisting of 0's, 1's and 2's and NA's (most of the entries are 0's), and a phenotype vector of 0's and 1's of length 1851. Since the genotypes consist of 3 discrete categories, I decided to use the polyreg method.
Here is the code I used to try to start the imputation (missing data is stored as -1 in the file; I had to change it to NA):
...ANSWER
Answered 2020-Mar-21 at 22:40When you impute, information from the other columns are used to predict those in the columns with the missing data, so for example:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install polyreg
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page