Pearson Correlation Matrix
> r0
          V1          V2          V3
V1 1.0000000  0.19052156  0.01938750
V2 0.1905216  1.00000000 -0.01300372
V3 0.0193875 -0.01300372  1.00000000


Partial Pearson Correlation Matrix (Shrinkage Method)
> r1
            V1           V2           V3
V1 1.000000000  0.076923041  0.008251105
V2 0.076923041  1.000000000 -0.005866187
V3 0.008251105 -0.005866187  1.000000000
attr(,"lambda")
[1] 0.5964836
attr(,"lambda.estimated")
[1] TRUE
attr(,"class")
[1] "shrinkage"
attr(,"spv")
       V1        V2        V3 
0.9940220 0.9940555 0.9999044