本文整理汇总了Python中shogun.Features.StringCharFeatures.obtain_by_sliding_window方法的典型用法代码示例。如果您正苦于以下问题：Python StringCharFeatures.obtain_by_sliding_window方法的具体用法？Python StringCharFeatures.obtain_by_sliding_window怎么用？Python StringCharFeatures.obtain_by_sliding_window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shogun.Features.StringCharFeatures的用法示例。
在下文中一共展示了StringCharFeatures.obtain_by_sliding_window方法的2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: get_test_features
# 需要导入模块: from shogun.Features import StringCharFeatures [as 别名]
# 或者: from shogun.Features.StringCharFeatures import obtain_by_sliding_window [as 别名]
def get_test_features(self, seq, window):
start = self.window[0] - window[0]
end = len(seq) - window[1] + self.window[2]
size = self.window[2] - self.window[0] + 1
seq = seq[start:end]
seq = seq.replace("N", "A").replace("R", "A").replace("M", "A")
f = StringCharFeatures([seq], DNA)
if self.preproc:
wf = StringWordFeatures(f.get_alphabet())
o = self.train_features.get_order()
wf.obtain_from_char(f, 0, o, 0, False)
f = wf
f.obtain_by_sliding_window(size, 1, o - 1)
else:
f.obtain_by_sliding_window(size, 1)
return f示例2: features_string_sliding_window_modular
# 需要导入模块: from shogun.Features import StringCharFeatures [as 别名]
# 或者: from shogun.Features.StringCharFeatures import obtain_by_sliding_window [as 别名]
def features_string_sliding_window_modular(strings):
from shogun.Features import StringCharFeatures, DNA
from shogun.Library import DynamicIntArray
f = StringCharFeatures([strings], DNA)
# slide a window of length 5 over features
# (memory efficient, does not copy strings)
f.obtain_by_sliding_window(5, 1)
# print(f.get_num_vectors())
# print(f.get_vector_length(0))
# print(f.get_vector_length(1))
# print(f.get_features())
# slide a window of length 4 over features
# (memory efficient, does not copy strings)
f.obtain_by_sliding_window(4, 1)
# print(f.get_num_vectors())
# print(f.get_vector_length(0))
# print(f.get_vector_length(1))
# print(f.get_features())
# extract string-windows at position 0,6,16,25 of window size 4
# (memory efficient, does not copy strings)
f.set_features([s])
positions = DynamicIntArray()
positions.append_element(0)
positions.append_element(6)
positions.append_element(16)
positions.append_element(25)
f.obtain_by_position_list(4, positions)
# print(f.get_features())
# now extract windows of size 8 from same positon list
f.obtain_by_position_list(8, positions)
# print(f.get_features())
return f