Class Rule

source code

Instance Methods

[hide private]

__init__(self, name=None, add_coverage=0, add_confidence=0)
Construct a new rule.

source code

__repr__(self)
String representation of the ruleset.

source code

append(self, rule)
Append a rule to the ruleset.

source code

set_exceptions(self, rules)
Add exceptions to the rule.

source code

float

get_error(self)
Calculate error percentage.

source code

float

get_single_error(self)
Calculate error percentage without taking exceptions into account.

source code

boolean

shorter_than(self, rule2, c)
Compare rule's description length with another rule.

source code

cost(self)
Find the cost per element for the rule.

source code

Class Variables

[hide private]

MAX_COST = 1000000

Method Details

[hide private]

append(self, rule)

source code

Append a rule to the ruleset.

Parameters:

rule (Rule) - rule to be appended.

set_exceptions(self, rules)

source code

Add exceptions to the rule.

Parameters:

rules (Ruleset) - exceptions to be added.

get_error(self)

source code

Calculate error percentage.

Returns: float: error percentage of the rule.

get_single_error(self)

source code

Calculate error percentage without taking exceptions into account.

Returns: float: error percentage of the rule without exceptions.

shorter_than(self, rule2, c)

source code

Compare rule's description length with another rule.

Parameters:

rule2 (Rule) - rule to compare with.

Returns: boolean

True if rule has shorter description length than rule2.