2022-01-16 16:06:58 +01:00
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import numpy as np
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import skfuzzy as fuzz
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from skfuzzy import control as ctrl
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2022-01-23 08:42:40 +01:00
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def get_fuzzy_response(request_params, objects_list):
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2022-01-16 16:06:58 +01:00
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# Stworzenie uniwersum
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production_year = ctrl.Antecedent(np.arange(1960, 2022, 1), 'production_year')
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mileage = ctrl.Antecedent(np.arange(0, 500000, 1), 'mileage')
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engine_capacity = ctrl.Antecedent(np.arange(0.7, 8.2, 0.1), 'engine_capacity')
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2022-01-23 08:42:40 +01:00
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combustion = ctrl.Antecedent(np.arange(4.0, 15.0, 0.1), 'combustion')
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2022-01-16 16:06:58 +01:00
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# Tworzenie funkcji rozmytych
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production_year['low'] = fuzz.trimf(production_year.universe, [1960, 1960, 2001])
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production_year['mid'] = fuzz.trimf(production_year.universe, [1960, 2001, 2022])
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production_year['high'] = fuzz.trimf(production_year.universe, [2017, 2022, 2022])
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mileage['low'] = fuzz.trimf(mileage.universe, [0, 0, 50000])
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mileage['mid'] = fuzz.trimf(mileage.universe, [0, 300000, 500000])
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mileage['high'] = fuzz.trimf(mileage.universe, [300000, 500000, 500000])
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engine_capacity['low'] = fuzz.trimf(engine_capacity.universe, [0.7, 0.7, 1.2])
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engine_capacity['mid'] = fuzz.trimf(engine_capacity.universe, [1.2, 2.0, 8.2])
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engine_capacity['high'] = fuzz.trimf(engine_capacity.universe, [5.0, 8.2, 8.2])
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combustion['low'] = fuzz.trimf(combustion.universe, [4.0, 4.0, 6.0])
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combustion['mid'] = fuzz.trimf(combustion.universe, [4.0, 8.0, 15.0])
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combustion['high'] = fuzz.trimf(combustion.universe, [8.5, 15.0, 15.0])
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2022-01-23 08:42:40 +01:00
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# Obliczanie przynaleznosci danego obiektu do podanych danych kwerendy i tworzenie przefiltrowanej listy
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end_object_list = []
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for i in objects_list:
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comparator = []
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if 'production_year' in request_params:
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comparator.append(fuzz.interp_membership(production_year.universe, production_year[str(request_params['production_year'])].mf, i['production_year']))
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if 'mileage' in request_params:
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comparator.append(fuzz.interp_membership(mileage.universe, mileage[str(request_params['mileage'])].mf, i['mileage']))
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if 'engine_capacity' in request_params:
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comparator.append(fuzz.interp_membership(engine_capacity.universe, engine_capacity[str(request_params['engine_capacity'])].mf, i['engine_capacity']))
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if 'combustion' in request_params:
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comparator.append(fuzz.interp_membership(combustion.universe, combustion[str(request_params['combustion'])].mf, i['combustion']))
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if min(comparator) > 0.75:
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end_object_list.append(object)
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return end_object_list
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2022-01-16 16:06:58 +01:00
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