ArtificialBeeColonyAlgorithm.run() - Code Metrics - Inspection of "Merge pull request #69 from GregaVrbancic/gen-docs" - NiaOrg/NiaPy - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( fc4c38...3e2db1 )

by Grega

created 2018-02-21 12:37 UTC

ArtificialBeeColonyAlgorithm.run() C

↳ Parent: ArtificialBeeColonyAlgorithm

Complexity

Conditions

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	10
c	0
b	0
f	0
dl	0
loc	56
rs	5.0704

How to fix Long Method Complexity

import random as rnd
import copy
from NiaPy.benchmarks.utility import Utility

__all__ = ['ArtificialBeeColonyAlgorithm']


class SolutionABC(object):

    def __init__(self, D, LB, UB):
        self.D = D
        self.Solution = []
        self.Fitness = float('inf')
        self.LB = LB
        self.UB = UB
        self.generateSolution()

    def generateSolution(self):
        self.Solution = [self.LB + (self.UB - self.LB) * rnd.random()
                         for _i in range(self.D)]

    def repair(self):
        for i in range(self.D):
            if self.Solution[i] > self.UB:
                self.Solution[i] = self.UB


            if self.Solution[i] < self.LB:
                self.Solution[i] = self.LB

    def evaluate(self):
        self.Fitness = SolutionABC.FuncEval(self.D, self.Solution)

    def toString(self):
        pass


class ArtificialBeeColonyAlgorithm(object):
    """Artificial Bee Colony algorithm.

    Date: 12. 2. 2018

    Authors : Uros Mlakar

    License: MIT

    Reference paper: Karaboga, D., and Bahriye B. "A powerful
    and efficient algorithm for numerical function optimization: artificial
    bee colony (ABC) algorithm." Journal of global optimization 39.3 (2007): 459-471.

    EDITED - TODO: More tests are required! Validation!

    TODO: EVALUATIONS!
    """

    # pylint: disable=too-many-instance-attributes
    def __init__(self, D, NP, nFES, benchmark):
        """**__init__(self, D, NP, nFES, benchmark)**.

        Arguments:
            D {integer} -- dimension of problem

            NP {integer} -- population size

            nFES {integer} -- number of function evaluations

            benchmark {object} -- benchmark implementation object

        Raises:
            TypeError -- Raised when given benchmark function which does not exists.

        """

        self.benchmark = Utility().get_benchmark(benchmark)
        self.D = D
        self.NP = NP
        self.FoodNumber = int(self.NP / 2)
        self.Limit = 100
        self.Trial = []
        self.Foods = []
        self.Probs = []
        self.nFES = nFES
        self.Lower = self.benchmark.Lower
        self.Upper = self.benchmark.Upper
        SolutionABC.FuncEval = staticmethod(self.benchmark.function())
        self.Best = SolutionABC(self.D, self.Lower, self.Upper)

    def init(self):
        self.Probs = [0 for i in range(self.FoodNumber)]
        self.Trial = [0 for i in range(self.FoodNumber)]
        for i in range(self.FoodNumber):
            self.Foods.append(SolutionABC(self.D, self.Lower, self.Upper))
            self.Foods[i].evaluate()
            self.checkForBest(self.Foods[i])

    def CalculateProbs(self):
        self.Probs = [1.0 / (self.Foods[i].Fitness + 0.01)
                      for i in range(self.FoodNumber)]
        s = sum(self.Probs)
        self.Probs = [self.Probs[i] / s for i in range(self.FoodNumber)]

    def checkForBest(self, Solution):
        if Solution.Fitness <= self.Best.Fitness:
            self.Best = copy.deepcopy(Solution)

    def run(self):
        self.init()
        FEs = self.FoodNumber
        while FEs < self.nFES:
            self.Best.toString()
            for i in range(self.FoodNumber):
                newSolution = copy.deepcopy(self.Foods[i])
                param2change = int(rnd.random() * self.D)
                neighbor = int(self.FoodNumber * rnd.random())
                newSolution.Solution[param2change] = self.Foods[i].Solution[param2change] \
                    + (-1 + 2 * rnd.random()) * \
                    (self.Foods[i].Solution[param2change] -
                     self.Foods[neighbor].Solution[param2change])
                newSolution.repair()
                newSolution.evaluate()
                if newSolution.Fitness < self.Foods[i].Fitness:
                    self.checkForBest(newSolution)
                    self.Foods[i] = newSolution
                    self.Trial[i] = 0
                else:
                    self.Trial[i] += 1
            FEs += self.FoodNumber
            self.CalculateProbs()
            t, s = 0, 0
            while t < self.FoodNumber:
                if rnd.random() < self.Probs[s]:
                    t += 1
                    Solution = copy.deepcopy(self.Foods[s])
                    param2change = int(rnd.random() * self.D)
                    neighbor = int(self.FoodNumber * rnd.random())
                    while neighbor == s:
                        neighbor = int(self.FoodNumber * rnd.random())
                    Solution.Solution[param2change] = self.Foods[s].Solution[param2change] \
                        + (-1 + 2 * rnd.random()) * (
                            self.Foods[s].Solution[param2change] -
                            self.Foods[neighbor].Solution[param2change])
                    Solution.repair()
                    Solution.evaluate()
                    FEs += 1
                    if Solution.Fitness < self.Foods[s].Fitness:
                        self.checkForBest(newSolution)
                        self.Foods[s] = Solution
                        self.Trial[s] = 0
                    else:
                        self.Trial[s] += 1
                s += 1
                if s == self.FoodNumber:
                    s = 0

            mi = self.Trial.index(max(self.Trial))
            if self.Trial[mi] >= self.Limit:
                self.Foods[mi] = SolutionABC(self.D, self.Lower, self.Upper)
                self.Foods[mi].evaluate()
                FEs += 1
                self.Trial[mi] = 0
        return self.Best.Fitness


1		import random as rnd
2		import copy
3		from NiaPy.benchmarks.utility import Utility
4
5		__all__ = ['ArtificialBeeColonyAlgorithm']
6
7
8		class SolutionABC(object):
9
10		def __init__(self, D, LB, UB):
11		self.D = D
12		self.Solution = []
13		self.Fitness = float('inf')
14		self.LB = LB
15		self.UB = UB
16		self.generateSolution()
17
18		def generateSolution(self):
19		self.Solution = [self.LB + (self.UB - self.LB) * rnd.random()
20		for _i in range(self.D)]
21
22		def repair(self):
23		for i in range(self.D):
24		if self.Solution[i] > self.UB:
25	View Code Duplication	self.Solution[i] = self.UB
		0 ignored issues – show Duplication introduced 2018-02-21 12:29 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
26
27		if self.Solution[i] < self.LB:
28		self.Solution[i] = self.LB
29
30		def evaluate(self):
31		self.Fitness = SolutionABC.FuncEval(self.D, self.Solution)
32
33		def toString(self):
34		pass
35
36
37		class ArtificialBeeColonyAlgorithm(object):
38		"""Artificial Bee Colony algorithm.
39
40		Date: 12. 2. 2018
41
42		Authors : Uros Mlakar
43
44		License: MIT
45
46		Reference paper: Karaboga, D., and Bahriye B. "A powerful
47		and efficient algorithm for numerical function optimization: artificial
48		bee colony (ABC) algorithm." Journal of global optimization 39.3 (2007): 459-471.
49
50		EDITED - TODO: More tests are required! Validation!
51
52		TODO: EVALUATIONS!
53		"""
54
55		# pylint: disable=too-many-instance-attributes
56		def __init__(self, D, NP, nFES, benchmark):
57		"""__init__(self, D, NP, nFES, benchmark).
58
59		Arguments:
60		D {integer} -- dimension of problem
61
62		NP {integer} -- population size
63
64		nFES {integer} -- number of function evaluations
65
66		benchmark {object} -- benchmark implementation object
67
68		Raises:
69		TypeError -- Raised when given benchmark function which does not exists.
70
71		"""
72
73		self.benchmark = Utility().get_benchmark(benchmark)
74		self.D = D
75		self.NP = NP
76		self.FoodNumber = int(self.NP / 2)
77		self.Limit = 100
78		self.Trial = []
79		self.Foods = []
80		self.Probs = []
81		self.nFES = nFES
82		self.Lower = self.benchmark.Lower
83		self.Upper = self.benchmark.Upper
84		SolutionABC.FuncEval = staticmethod(self.benchmark.function())
85		self.Best = SolutionABC(self.D, self.Lower, self.Upper)
86
87		def init(self):
88		self.Probs = [0 for i in range(self.FoodNumber)]
89		self.Trial = [0 for i in range(self.FoodNumber)]
90		for i in range(self.FoodNumber):
91		self.Foods.append(SolutionABC(self.D, self.Lower, self.Upper))
92		self.Foods[i].evaluate()
93		self.checkForBest(self.Foods[i])
94
95		def CalculateProbs(self):
96		self.Probs = [1.0 / (self.Foods[i].Fitness + 0.01)
97		for i in range(self.FoodNumber)]
98		s = sum(self.Probs)
99		self.Probs = [self.Probs[i] / s for i in range(self.FoodNumber)]
100
101		def checkForBest(self, Solution):
102		if Solution.Fitness <= self.Best.Fitness:
103		self.Best = copy.deepcopy(Solution)
104
105		def run(self):
106		self.init()
107		FEs = self.FoodNumber
108		while FEs < self.nFES:
109		self.Best.toString()
110		for i in range(self.FoodNumber):
111		newSolution = copy.deepcopy(self.Foods[i])
112		param2change = int(rnd.random() * self.D)
113		neighbor = int(self.FoodNumber * rnd.random())
114		newSolution.Solution[param2change] = self.Foods[i].Solution[param2change] \
115		+ (-1 + 2 * rnd.random()) * \
116		(self.Foods[i].Solution[param2change] -
117		self.Foods[neighbor].Solution[param2change])
118		newSolution.repair()
119		newSolution.evaluate()
120		if newSolution.Fitness < self.Foods[i].Fitness:
121		self.checkForBest(newSolution)
122		self.Foods[i] = newSolution
123		self.Trial[i] = 0
124		else:
125		self.Trial[i] += 1
126		FEs += self.FoodNumber
127		self.CalculateProbs()
128		t, s = 0, 0
129		while t < self.FoodNumber:
130		if rnd.random() < self.Probs[s]:
131		t += 1
132		Solution = copy.deepcopy(self.Foods[s])
133		param2change = int(rnd.random() * self.D)
134		neighbor = int(self.FoodNumber * rnd.random())
135		while neighbor == s:
136		neighbor = int(self.FoodNumber * rnd.random())
137		Solution.Solution[param2change] = self.Foods[s].Solution[param2change] \
138		+ (-1 + 2 * rnd.random()) * (
139		self.Foods[s].Solution[param2change] -
140		self.Foods[neighbor].Solution[param2change])
141		Solution.repair()
142		Solution.evaluate()
143		FEs += 1
144		if Solution.Fitness < self.Foods[s].Fitness:
145		self.checkForBest(newSolution)
146		self.Foods[s] = Solution
147		self.Trial[s] = 0
148		else:
149		self.Trial[s] += 1
150		s += 1
151		if s == self.FoodNumber:
152		s = 0
153
154		mi = self.Trial.index(max(self.Trial))
155		if self.Trial[mi] >= self.Limit:
156		self.Foods[mi] = SolutionABC(self.D, self.Lower, self.Upper)
157		self.Foods[mi].evaluate()
158		FEs += 1
159		self.Trial[mi] = 0
160		return self.Best.Fitness
161

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ArtificialBeeColonyAlgorithm.run() C

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How to fix Long Method Complexity

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