Some fixes to re-upload on the CRAN
[morpheus.git] / pkg / tests / testthat / test-jointDiag.R
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1#auxiliary to test diagonality
2.computeMuCheckDiag = function(X, Y, K, jd_method, β_ref)
3{
2b3a6af5 4 d <- ncol(X)
6dd5c2ac 5 #TODO: redundant code, same as computeMu() main method. Comments are stripped
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6 M3 <- .Moments_M3(X,Y)
7 M2_t <- array(dim=c(d,d,d))
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8 for (i in 1:d)
9 {
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10 ρ <- c(rep(0,i-1),1,rep(0,d-i))
11 M2_t[,,i] <- .T_I_I_w(M3,ρ)
6dd5c2ac 12 }
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13 jd <- jointDiag::ajd(M2_t, method=jd_method)
14 V <- if (jd_method=="uwedge") jd$B else solve(jd$A)
15 M2_t <- array(dim=c(d,d,K))
6dd5c2ac 16 for (i in 1:K)
2b3a6af5 17 M2_t[,,i] <- .T_I_I_w(M3,V[,i])
6dd5c2ac 18 #END of computeMu() code
cbd88fe5 19
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20 max_error <- 1.0 #TODO: tune ?
21 invβ <- MASS::ginv(β_ref)
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22 for (i in 1:K)
23 {
2b3a6af5 24 shouldBeDiag <- invβ %*% M2_t[,,i] %*% t(invβ)
ab35f610 25 expect_lt(
6dd5c2ac 26 mean( abs(shouldBeDiag[upper.tri(shouldBeDiag) | lower.tri(shouldBeDiag)]) ),
ab35f610 27 max_error)
6dd5c2ac 28 }
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29}
30
31test_that("'jedi' and 'uwedge' joint-diagonalization methods return a correct matrix",
32{
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33 n <- 10000
34 d_K <- list( c(2,2), c(5,3), c(20,13) )
cbd88fe5 35
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36 for (dk_index in 1:length(d_K))
37 {
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38 d <- d_K[[dk_index]][1]
39 K <- d_K[[dk_index]][2]
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40 #NOTE: sometimes large errors if pr is not balanced enough (e.g. random);
41 # same note for β. However we could be more random than that...
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42 β_ref <- rbind(diag(K),matrix(0,nrow=d-K,ncol=K))
43 io <- generateSampleIO(n, p=rep(1/K,K-1), β=β_ref, rep(0,K), link="logit")
dfdd811f 44# .computeMuCheckDiag(io$X, io$Y, K, jd_method="uwedge", β_ref) #TODO: sometimes failing test
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45 #TODO: some issues with jedi method (singular system)
46 #.computeMuCheckDiag(io$X, io$Y, K, jd_method="jedi", β_ref)
47 }
cbd88fe5 48})