python - 使用 scikit-tensor 进行张量分析

Question

我使用以下代码在 scikit-tensor 中进行 parafac 分解。此代码是 scikit-tensor 的示例。

from sktensor import dtensor, cp_als, parafac2, tucker_hooi
import numpy
import sktensor

T=dtensor(numpy.arange(100).reshape(2, 5,10))
print (type(T))

P, F, D, A, fit, itr, exectimes = parafac2.parafac2(T, 3, init=3, ma_iter=5, conv= 4)

当我运行此代码时，输​​出是...

Traceback (most recent call last):
  File "C:/Users/meghdad/PycharmProjects/tensorInPython/dtensor1.py", line 17, in <module>
    P, F, D, A, fit, itr, exectimes = parafac2.parafac2(T, 3, init=3, ma_iter=5, conv= 4)
  File "C:\Anaconda3\lib\site-packages\scikit_tensor-0.1-py3.5.egg\sktensor\parafac2.py", line 50, in parafac2
  File "C:\Anaconda3\lib\site-packages\scikit_tensor-0.1-py3.5.egg\sktensor\parafac2.py", line 113, in __init
UnboundLocalError: local variable 'F' referenced before assignment

我该如何解决此错误？

Answer 1

我查看了source code对于版本 0.1。 “init”关键字的唯一有效值为“nvecs”或“random”。默认值为“nvecs”。如果您尝试其中任何一个，您将消除错误:

P, F, D, A, fit, itr, exectimes = parafac2.parafac2(T, 3, init='nvecs', ma_iter=5, conv= 4)

或者

P, F, D, A, fit, itr, exectimes = parafac2.parafac2(T, 3, init='random', ma_iter=5, conv= 4)