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# This is temporary fix to import module from parent folder |
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# It will be removed when package is published on PyPI |
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import sys |
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sys.path.append('../') |
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# End of fix |
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import random |
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import logging |
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from NiaPy.algorithms.basic import BatAlgorithm |
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from NiaPy.benchmarks import Griewank |
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logging.basicConfig() |
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logger = logging.getLogger('examples') |
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logger.setLevel('INFO') |
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# For reproducive results |
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random.seed(1234) |
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class MyBenchmark(object): |
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def __init__(self): |
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self.Lower = -11 |
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self.Upper = 11 |
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def function(self): |
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def evaluate(D, sol): |
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val = 0.0 |
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for i in range(D): |
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val = val + sol[i] * sol[i] |
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return val |
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return evaluate |
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# example using custom benchmark "MyBenchmark" |
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logger.info('Running with custom MyBenchmark...') |
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for i in range(10): |
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Algorithm = BatAlgorithm(10, 40, 10000, 0.5, 0.5, 0.0, 2.0, MyBenchmark()) |
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Best = Algorithm.run() |
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logger.info(Best) |
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# example using predifined benchmark function |
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# available benchmarks are: |
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# - griewank |
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# - rastrigin |
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# - rosenbrock |
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# - sphere |
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logger.info('Running with default Griewank benchmark...') |
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griewank = Griewank() |
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for i in range(10): |
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Algorithm = BatAlgorithm(10, 40, 10000, 0.5, 0.5, 0.0, 2.0, griewank) |
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Best = Algorithm.run() |
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logger.info(Best) |
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logger.info( |
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'Running with default Griewank benchmark - should be the same as previous implementataion...') |
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for i in range(10): |
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Algorithm = BatAlgorithm(10, 40, 10000, 0.5, 0.5, 0.0, 2.0, 'griewank') |
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Best = Algorithm.run() |
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logger.info(Best) |
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# example with changed griewank's lower and upper bounds |
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logger.info('Running with Griewank with changed Upper and Lower bounds...') |
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griewank = Griewank(-50, 50) |
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for i in range(10): |
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Algorithm = BatAlgorithm(10, 40, 10000, 0.5, 0.5, 0.0, 2.0, griewank) |
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Best = Algorithm.run() |
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logger.info(Best) |
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NiaOrg /
NiaPy
