Abstract
We consider supervised dimension reduction problems, namely to identify a low dimensional projection of the predictors x which can retain the statistical relationship between x and the response variable y. We follow the idea of the sliced inverse regression (SIR) and the sliced average variance estimation (SAVE) type of methods, which is to use the statistical information of the conditional distribution π(x|y) to identify the dimension reduction (DR) space. In particular we focus on the task of computing this conditional distribution without slicing the data. We propose a Bayesian framework to compute the conditional distribution where the likelihood function is obtained using the Gaussian process regression model. The conditional distribution π(x|y) can then be computed directly via Monte Carlo sampling. We then can perform DR by considering certain moment functions (e.g. the first or the second moment) of the samples of the posterior distribution. With numerical examples, we demonstrate that the proposed method is especially effective for small data problems.
Original language | English |
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Pages (from-to) | 2817-2832 |
Number of pages | 16 |
Journal | Journal of Statistical Computation and Simulation |
Volume | 91 |
Issue number | 14 |
Early online date | 8 Apr 2021 |
DOIs | |
Publication status | Published - 8 Apr 2021 |
Bibliographical note
Funding Information: XC and JL were partially supported by the National Natural Science Foundation of China under grant number 11301337Keywords
- Bayesian inference
- covariance operator
- dimension reduction
- Gaussian process
- inverse regression
- Dimension reduction
- sliced inverse regression
- supervised learning
- Monte Carlo simulation
- Statistics, Probability and Uncertainty
- Modelling and Simulation
- Statistics and Probability
- Applied Mathematics
ASJC Scopus subject areas
- Applied Mathematics
- Statistics and Probability
- Statistics, Probability and Uncertainty
- Modelling and Simulation