Tagged Questions

2
votes
4answers
355 views

How to increase variance in Gaussian Process regression?

I'm currently experimenting with Gaussian processes. I decided to use matlab + gpml (http://www.gaussianprocess.org/gpml/code/) for playing around with Gaussian processes a bit. I'd like to do ...
1
vote
1answer
220 views

Computing time issues when using ordinary kriging

I am having time issues when using ordinary kriging. I have a spatial grid of 200x300 where I want to calculate the interpolated values. For that I am using ordinary kriging. Now for each point in the ...
0
votes
0answers
89 views

How to incorporate prior knowledge in GPML?

I am using the MATLAB code for Rasmussen & Williams' book Gaussian Processes for Machine Learning. How can one incorporate prior knowledge in Gaussian process regression? Say, that the variance ...
0
votes
1answer
291 views

Using GPML in Matlab for MultiClass Classification

I am using Rasmussen's GPML code in Matlab R2011a_student. I have training data (2560x29707) w/ labels (6 classes), and test data (640x29707). To prep the data I have 1. converted from sparse to full, ...
0
votes
1answer
231 views

Gaussian process predictor

I am building GP regressor , my input data is 1-d column vector and so is my target. I have divided my data into training and testing sets. I trained the model to learn the hyper-paramters and then ...
1
vote
2answers
1k views

How to correctly use the GPML Matlab code for an actual (non-demo) problem?

I have downloaded the most recent GPML Matlab code GPML Matlab code and I have read the documentation and ran the regression demo without any problems. However, I am having difficulty understanding ...