Implementación de Red de Bayes sin utilizar librerias externas
Project description
Red de Byaes
Implementación de Red de Bayes en python sin utilizar librerias externas. Angel Higueros - 20460
Ejemplo de uso
from Nodo, RedBayes import redbayes_higuerps
def main():
cloudy = Nodo("Cloudy", [], {(True,): 0.5, (False,): 0.5})
sprinkler = Nodo("Sprinkler", [cloudy], {(True, True): 0.1, (True, False): 0.5, (False, True): 0.9, (False, False): 0.5})
rain = Nodo("Rain", [cloudy], {(True, True): 0.8, (True, False): 0.2, (False, True): 0.2, (False, False): 0.8})
wet = Nodo("Wet grass", [rain, sprinkler], {
(True, True, True): 0.99, (True, True, False): 0.9, (True, False, True): 0.9, (True, False, False): 0,
(False, True, True): 0.01, (False, True, False): 0.1, (False, False, True): 0.01, (False, False, False): 1})
red = RedBayesiana([cloudy, sprinkler, rain, wet])
evidencias = {"Sprinkler": True, "Cloudy": False, "Rain": True, "Wet grass": True}
p_sintomas = red.calcular_probabilidad(evidencias)
print("Probabilidad conjunta: ", p_sintomas)
p_marginal = red.obtener_probabilidad_marginal(sprinkler, evidencias)
print("Probabilidad marginal de sprinkler: ", p_marginal)
p_condicional = red.obtener_probabilidad_condicional(wet, evidencias)
print("Probabilidad condicional de Wet Grass dado Sprinkler: ", p_condicional)
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