solve unecessary use of inv function (#12)

* solve unecessary use of inv function * use inv in \Lambda
JuliaML · Nov 1, 2021 · 4393499 · 4393499
1 parent 694cb5f
commit 4393499
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/src/transforms/eigenanalysis.jl b/src/transforms/eigenanalysis.jl
@@ -38,13 +38,15 @@ end
 function drsproj(λ, V)
   Λ = Diagonal(sqrt.(λ))
   S = V * inv(Λ)
-  S, inv(S)
+  S⁻¹ = Λ * transpose(V)
+  S, S⁻¹
 end
 
 function sdsproj(λ, V)
   Λ = Diagonal(sqrt.(λ))
   S = V * inv(Λ) * transpose(V)
-  S, inv(S)
+  S⁻¹ = V * Λ * transpose(V)
+  S, S⁻¹
 end
 
 function matrices(transform::EigenAnalysis, λ, V)