Skip to content
Permalink
Branch: master
Find file Copy path
Find file Copy path
1 contributor

Users who have contributed to this file

72 lines (53 sloc) 2.12 KB
context("test-sfpca.R")
# the MATLAB test data is created by running resources/create_test_data.m
expect_agrees_with_matlab <- function(testfile) {
test <- R.matlab::readMat(testfile)
res_r <- sfpca_r(X = test$x,
lambda_u = as.numeric(test$lamu),
lambda_v = as.numeric(test$lamv),
alpha_u = as.numeric(test$alphau),
alpha_v = as.numeric(test$alphav),
Omega_u = test$Omegu,
Omega_v = test$Omegv)
res_cpp <- sfpca(X = test$x,
lambda_u = as.numeric(test$lamu),
lambda_v = as.numeric(test$lamv),
alpha_u = as.numeric(test$alphau),
alpha_v = as.numeric(test$alphav),
Omega_u = test$Omegu,
Omega_v = test$Omegv)
# test R implementation
expect_equal(test$U, res_r$u, tolerance = 1e-5)
expect_equal(test$V, res_r$v, tolerance = 1e-5)
expect_equal(as.numeric(test$d), res_r$d, tolerance = 1e-5)
# test C++ implementation
expect_equal(test$U, res_cpp$u, tolerance = 1e-5)
expect_equal(test$V, res_cpp$v, tolerance = 1e-5)
expect_equal(as.numeric(test$d), res_cpp$d, tolerance = 1e-5)
}
test_that("Input checking", {
X <- as.matrix(iris[, 1:4])
expect_error(sfpca(X, lambda_u = -1))
expect_error(sfpca(X, lambda_v = -1))
expect_error(sfpca(X, alpha_u = -1))
expect_error(sfpca(X, alpha_v = -1))
n <- nrow(X)
p <- ncol(X)
expect_error(sfpca(X, Omega_u = -1 * diag(n))) # negative definite
expect_error(sfpca(X, Omega_v = -1 * diag(p)))
expect_error(sfpca(X, Omega_u = diag(n + 1))) # wrong size
expect_error(sfpca(X, Omega_u = diag(p + 1)))
})
test_that("Matches PCA when not regularization applied", {
X <- as.matrix(iris[, 1:4])
res_sfpca <- sfpca(X)
res_svd <- svd(X)
expect_equivalent(res_svd$u[, 1], res_sfpca$u)
expect_equivalent(res_svd$v[, 1], res_sfpca$v)
expect_equal(res_svd$d[1], res_sfpca$d)
})
test_that("Agrees with MATLAB implementation", {
expect_agrees_with_matlab("test1.mat")
expect_agrees_with_matlab("test2.mat")
expect_agrees_with_matlab("test3.mat")
})
You can’t perform that action at this time.