前导小调。。。。。不是肯定的定义

Question

我从pyrca包中得到这个错误：

LinAlgError: the leading minor of order 46 of 'b' is not positive definite. The factorization of 'b' could not be completed and no eigenvalues or eigenvectors were computed.

它来自以下代码行：

cca.train([TCIA_train, TCGA_train])

后面会调用这行代码：

r, Vs = eigh(LH, RH, eigvals=(maxCC - numCC, maxCC - 1))

这最终导致了错误。 打印时的值：

• 最大立方厘米：59
• numCC:9个
• 左侧形状：（59，59）
• 形状：（59，右侧）

---

LH: [[  0.           0.           0.         ... -14.70181642 -11.97719127
  -32.68404183]
 [  0.           0.           0.         ...  -5.00595616   8.23628459
  -11.05749337]
 [  0.           0.           0.         ...  42.09480915  12.11597276
   29.5793337 ]
 ...
 [-14.70181642  -5.00595616  42.09480915 ...   0.           0.
    0.        ]
 [-11.97719127   8.23628459  12.11597276 ...   0.           0.
    0.        ]
 [-32.68404183 -11.05749337  29.5793337  ...   0.           0.
    0.        ]]

RH: [[ 5.98249871e+03  5.28188061e+02 -3.75685403e+02 ...  0.00000000e+00
   0.00000000e+00  0.00000000e+00]
 [ 5.28188061e+02  3.84674934e+03  3.45817309e+02 ...  0.00000000e+00
   0.00000000e+00  0.00000000e+00]
 [-3.75685403e+02  3.45817309e+02  2.56407017e+03 ...  0.00000000e+00
   0.00000000e+00  0.00000000e+00]
 ...
 [ 0.00000000e+00  0.00000000e+00  0.00000000e+00 ...  6.00000000e+00
   3.00000000e+00  1.00000000e+00]
 [ 0.00000000e+00  0.00000000e+00  0.00000000e+00 ...  3.00000000e+00
   7.00000000e+00  2.00000000e+00]
 [ 0.00000000e+00  0.00000000e+00  0.00000000e+00 ...  1.00000000e+00
   2.00000000e+00  5.00000000e+00]]