def confusion_matrix(self, klass):
for i in self.data:
if i.classified_klass == None:
raise system.SystemError('Cannot calculate accuracy as one or more instance(s) are not classified')
matrix = cm.ConfusionMatrix(klass)
for i in self.data:
matrix.count(i.klass_value, i.classified_klass)
return matrix
def __init__(self, lower=0, upper=0, upper_includes_max=False):
"""
any number within this range should be greater than or equal to self.lower and
less than (or less than equal to depending on whether it includes the max) self.upper
"""
self.__delta_added = False
if upper < lower:
raise se.SystemError('Lower limit ' + str(lower) +
' cannot be greater than the Upper limit ' +
str(upper) + ' in a range')
self.__uninitialized = False
if upper == lower == 0:
self.__uninitialized = True
self.lower, self.upper, self.__delta_added = lower, upper, False
if upper_includes_max:
self.upper += DELTA
self.__delta_added = True
def split(self, parts):
if self.lower == self.upper: return None
size = self.upper - self.lower
max_limit = self.upper
if self.__delta_added:
size -= DELTA
max_limit -= DELTA
each = size / parts
if each < DELTA:
raise se.SystemError(
'Splitting of range resulted in elements smaller than delta ' +
str(DELTA) + '.')
lower, ranges = self.lower, []
for i in range(parts - 1):
ranges.append(Range(lower, lower + each))
lower += each
ranges.append(Range(lower, self.upper))
return ranges
def __div(self, num, den):
if num == 0: return 0;
if den == 0: raise se.SystemError('Divide by Zero Error')
return float(num)/ den
def __get_lines(self, file_path, ext):
if file_path is None:
raise se.SystemError('Cannot open file. File name not specified.')
return cfile.File(file_path, ext).for_each_line(lambda line: line)