本文整理汇总了Python中sklearn.decomposition.pca.PCA.score方法的典型用法代码示例。如果您正苦于以下问题：Python PCA.score方法的具体用法？Python PCA.score怎么用？Python PCA.score使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类sklearn.decomposition.pca.PCA的用法示例。
在下文中一共展示了PCA.score方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: dimensional
# 需要导入模块: from sklearn.decomposition.pca import PCA [as 别名]
# 或者: from sklearn.decomposition.pca.PCA import score [as 别名]
def dimensional(tx, ty, rx, ry, add=None):
print "pca"
for j in range(tx[1].size):
i = j + 1
print "===" + str(i)
compressor = PCA(n_components = i)
t0 = time()
compressor.fit(tx, y=ty)
newtx = compressor.transform(tx)
runtime=time() - t0
V = compressor.components_
print runtime, V.shape, compressor.score(tx)
distances = np.linalg.norm(tx-compressor.inverse_transform(newtx))
print distances
print "pca done"
print "ica"
for j in range(tx[1].size):
i = j + 1
print "===" + str(i)
compressor = ICA(whiten=True)
t0 = time()
compressor.fit(tx, y=ty)
newtx = compressor.transform(tx)
runtime=time() - t0
print newtx.shape, runtime
distances = np.linalg.norm(tx-compressor.inverse_transform(newtx))
print distances
print "ica done"
print "RP"
for j in range(tx[1].size):
i = j + 1
print "===" + str(i)
compressor = RandomProjection(n_components=i)
t0 = time()
compressor.fit(tx, y=ty)
newtx = compressor.transform(tx)
runtime=time() - t0
shape = newtx.shape
print runtime, shape
print "RP done"
print "K-best"
for j in range(tx[1].size):
i = j + 1
print "===" + str(i)
compressor = best(add, k=i)
t0 = time()
compressor.fit(tx, y=ty.ravel())
newtx = compressor.transform(tx)
runtime=time() - t0
shape = newtx.shape
print runtime, shape
print "K-best done"