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Table 1 Parameters of the Gamma distributions for sampling the RBF-hyperparameters.

From: A Simple Approach to Ranking Differentially Expressed Gene Expression Time Courses through Gaussian Process Regression

  

Sampling Gamma distribution Γ(a, b)

  

a (scale)

b (shape)

Sampled

RBF-

Hyperparameters

â„“2 (characteristic lengthscale)

1.4

5.7

 

(signal variance)

2.76

0.2

 

(noise variance)

23

0.008

  1. These are the parameters of the Gamma distributions from which we sample the RBF- hyperparameters. For example, the characteristic lengthscale is sampled from a Gamma with scale 1.4 and shape 5.7. The hyperparameters are then used in the RBF covariance function to sample/simulate a profile from the Gaussian process.