本文整理汇总了Python中mvpa2.generators.partition.NFoldPartitioner.get_partition_specs方法的典型用法代码示例。如果您正苦于以下问题：Python NFoldPartitioner.get_partition_specs方法的具体用法？Python NFoldPartitioner.get_partition_specs怎么用？Python NFoldPartitioner.get_partition_specs使用的例子？那么恭喜您, 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mvpa2.generators.partition.NFoldPartitioner的用法示例。
在下文中一共展示了NFoldPartitioner.get_partition_specs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: test_counted_splitting
# 需要导入模块: from mvpa2.generators.partition import NFoldPartitioner [as 别名]
# 或者: from mvpa2.generators.partition.NFoldPartitioner import get_partition_specs [as 别名]
def test_counted_splitting(self):
spl = Splitter(attr='partitions')
# count > #chunks, should result in 10 splits
nchunks = len(self.data.sa['chunks'].unique)
for strategy in Partitioner._STRATEGIES:
for count, target in [ (nchunks*2, nchunks),
(nchunks, nchunks),
(nchunks-1, nchunks-1),
(3, 3),
(0, 0),
(1, 1)
]:
nfs = NFoldPartitioner(cvtype=1, count=count,
selection_strategy=strategy)
splits = [ list(spl.generate(p)) for p in nfs.generate(self.data) ]
self.failUnless(len(splits) == target)
chosenchunks = [int(s[1].uniquechunks) for s in splits]
# Test if configuration matches as well
nsplits_cfg = len(nfs.get_partition_specs(self.data))
self.failUnlessEqual(nsplits_cfg, target)
# Check if "lastsplit" dsattr was assigned appropriately
nsplits = len(splits)
if nsplits > 0:
# dummy-proof testing of last split
for ds_ in splits[-1]:
self.failUnless(ds_.a.lastpartitionset)
# test all now
for isplit,split in enumerate(splits):
for ds_ in split:
ds_.a.lastpartitionset == isplit==nsplits-1
# Check results of different strategies
if strategy == 'first':
self.failUnlessEqual(chosenchunks, range(target))
elif strategy == 'equidistant':
if target == 3:
self.failUnlessEqual(chosenchunks, [0, 3, 7])
elif strategy == 'random':
# none is selected twice
self.failUnless(len(set(chosenchunks)) == len(chosenchunks))
self.failUnless(target == len(chosenchunks))
else:
raise RuntimeError, "Add unittest for strategy %s" \
% strategy