我有一个scipy.sparse.csc.csc_matrix。我想在这个矩阵的每个元素上使用幂函数,这样每个元素都会升级到幂本身。我该怎么做?
我试过了:
B.data ** B.data
但这会从数据中删除0
答案 0 :(得分:1)
我对这种方法没有任何问题:
In [155]: B=sparse.random(10,10,.1,'csc')
In [156]: B
Out[156]:
<10x10 sparse matrix of type '<class 'numpy.float64'>'
with 10 stored elements in Compressed Sparse Column format>
In [157]: B.data
Out[157]:
array([ 0.79437782, 0.74414493, 0.3922551 , 0.61980213, 0.45231045,
0.94498933, 0.53086532, 0.54611246, 0.52941419, 0.81069106])
In [158]: B.data=B.data**B.data
In [159]: B.data
Out[159]:
array([ 0.83288253, 0.80259158, 0.69274789, 0.74342645, 0.69847422,
0.94793528, 0.71450246, 0.71866496, 0.71412372, 0.84354814])
In [160]: B
Out[160]:
<10x10 sparse matrix of type '<class 'numpy.float64'>'
with 10 stored elements in Compressed Sparse Column format>