def testKMeans(self):
data = DataRetriever("../Datasets/metadata.json")
data.retrieveData("computerHardware")
kValue = 15
t = Timer()
t.start()
mediods = KMediods(data.getDataSet(), data.getDataClass(),
data.getDescreteAttributes(),
data.getContinuousAttributes(),
data.getPredictionType(), kValue, 100)
t.stop()
print(f"Time: {t}")
print(mediods)
mediods.to_csv('kmedoids.csv', index=False)
maxItter = 100
kValue = 78
# These are only used for image segmentation and abalone
# frac = .25
# random_state = 69
# kValue = m.floor(frac * kValue)
dataSetUnNormalized = data.getDataSet()
# dataSetUnNormalized[data.getDataClass()] = np.log(dataSetUnNormalized[data.getDataClass()] + 0.001) // This is for Forest Fires
sn = StandardNormalizer(dataSetUnNormalized[data.getContinuousAttributes()])
dataSetUnNormalized[data.getContinuousAttributes()] = sn.train_fit()
dataSetNormalized = dataSetUnNormalized
# dataSetNormalized = dataSetNormalized.sample(frac=frac, random_state=random_state)
# dataSetNormalized = dataSetNormalized.reset_index()
# dataSetNormalized = dataSetNormalized.drop(["idNumber"], axis=1) #// For Glass
medoids = KMediods(dataSetNormalized, data.getDataClass(),
data.getDescreteAttributes(),
data.getContinuousAttributes(), data.getPredictionType(),
kValue, maxItter)
medoids.to_csv('./CSVOutput/' + "normalized" + dataSetName +
'MedoidsClustered.csv',
index=False)
print(f"CSV for " + dataSetName + " has been created!")
train_set = train_set.reset_index(drop=True)
# This line is used to normalize the data for Forest Fires
# dataset[dataRetriever.getDataClass()] = np.log(dataset[dataRetriever.getDataClass()]+0.1)
maxIter = 1
learning_rate = 1e-3
batch_size = 0.01
metrics = []
fold = 0
test_set = test_set.reset_index(drop=True)
train_set = train_set.reset_index(drop=True)
ohe = OneHotEncoder()
discrete_attr = dataRetriever.getDescreteAttributes()
if dataRetriever.getDataClass() in discrete_attr:
discrete_attr.remove(dataRetriever.getDataClass())
train_set = ohe.train_fit(train_set, discrete_attr)
test_set = ohe.fit(test_set)
# Normalize Data
sn = StandardNormalizer(train_set[dataRetriever.getContinuousAttributes()])
train_set[dataRetriever.getContinuousAttributes()] = sn.train_fit()
test_set[dataRetriever.getContinuousAttributes()] = sn.fit(test_set[dataRetriever.getContinuousAttributes()])
# Train network and change architecture in respect to data set
nn = NeuralNetwork(train_set, 2, [6,16], dataRetriever.getPredictionType(), dataRetriever.getDataClass())
fitness_matrix, average_fitness = nn._particle_swarm_optimize(70, max_iter=500)
def run_driver(current_data_set,
mutation_rate=0.5,
maxIter=1000,
batch_size=0.6,
population_size=110,
network_architecture=[15],
pb_actor=None):
cost_func = {
"breastCancer": "bin_cross",
"glass": "log_cosh",
"soybeanSmall": "log_cosh",
"abalone": "log_cosh",
"forestFires": "log_cosh",
"computerHardware": "log_cosh"
}
title_text = r"""
______ __ _ ___ __ _ __ __
/ ____/___ ____ ___ / /_ (_)_____ / / / /____ _ ____ _____ (_)/ /_ / /_ ____ ___ _____
/ / __ / _ \ / __ \ / _ \ / __// // ___/ / /| / / // __ `// __ \ / ___// // __// __ \ / __ `__ \ / ___/
/ /_/ // __// / / // __// /_ / // /__ / ___ / / // /_/ // /_/ // / / // /_ / / / // / / / / /(__ )
\____/ \___//_/ /_/ \___/ \__//_/ \___/ /_/ |_//_/ \__, / \____//_/ /_/ \__//_/ /_//_/ /_/ /_//____/
/____/
"""
output_json = {}
# ====================== Adjustable Variables ==============================
# current_data_set = "abalone"
# mutation_rate = .5
# maxIter = 10
# batch_size = .6
# population_size = 110
# network_architecture = []
# ===========================================================================
output_json["parameters"] = {
"mutation_rate": mutation_rate,
"population_size": population_size,
"network_architecture": network_architecture,
"cost_func": cost_func[current_data_set],
"maxIter": maxIter,
"batch_size": batch_size
}
# ================ Data pre-processing =================================================
dataRetriever = DataRetriever("../../Datasets/metadata.json")
dataRetriever.retrieveData(current_data_set)
dataset = dataRetriever.getDataSet().dropna()
discrete_attr = dataRetriever.getDescreteAttributes()
cont_attributes = dataRetriever.getContinuousAttributes()
# This line is used to normalize the data for Forest Fires
if current_data_set == "forestFires":
discrete_attr.remove('month')
discrete_attr.remove('day')
dataset['month'] = (pd.to_datetime(dataset.month,
format='%b').dt.month) - 1
dataset["day"] = dataset['day'].apply(
lambda x: list(calendar.day_abbr).index(x.capitalize()))
dataset["month_sin"] = np.sin(dataset['month'])
dataset["month_cos"] = np.sin(dataset['month'])
dataset["day_sin"] = np.sin(dataset['day'])
dataset["day_cos"] = np.sin(dataset['day'])
dataset = dataset.drop('day', axis=1)
dataset = dataset.drop('month', axis=1)
cont_attributes.append('month_sin')
cont_attributes.append('month_cos')
cont_attributes.append('day_sin')
cont_attributes.append('day_cos')
dataset[dataRetriever.getDataClass()] = np.log(
dataset[dataRetriever.getDataClass()] + 0.000001)
elif current_data_set == "computerHardware":
discrete_attr.remove('venderName')
discrete_attr.remove('modelName')
dataset = dataset.drop('venderName', axis=1)
dataset = dataset.drop('modelName', axis=1)
dataset = dataset.reset_index(drop=True)
if dataRetriever.getDataClass() in discrete_attr:
discrete_attr.remove(dataRetriever.getDataClass())
# ======================= Train Neural Network ================
print(title_text)
fold = 0
metrics = []
for test_set, train_set in KFolds(dataset, 10):
fold += 1
fitness_file = f"../DataDump/GA/{current_data_set}_layer{len(network_architecture)}_fold{fold}_fitness.csv"
output_file = f"../DataDump/GA/{current_data_set}_layer{len(network_architecture)}_fold{fold}_output.csv"
metrics.append(
multiprocess_func.remote(test_set,
train_set,
fold,
fitness_file,
output_file,
dataRetriever,
cost_func[current_data_set],
current_data_set,
mutation_rate,
maxIter,
batch_size,
population_size,
network_architecture,
pb_actor=None))
metrics = ray.get(metrics)
print(metrics)
print("Average Performance: ", np.asarray(metrics).mean())
output_json["Metrics"] = metrics
output_json["Average"] = np.asarray(metrics, dtype=np.float64).mean()
output_json["Std"] = np.asarray(metrics, dtype=np.float64).std()
with open(
f"../DataDump/GA_{current_data_set}_layer{len(network_architecture)}.json",
'w') as f:
json.dump(output_json, f, indent=4)
def network_tuner(*nodes_per_hidden_layer):
"""
This function is used to calcuate the optimal network architecture
The user should input the dataset they would like to operate with and change the performance metric in accordance to the data set type IE regression or classification
"""
MSEs = []
bestNetwork = {}
learning_rate = 0.0001
maxItter = 500
batch_size = .5
dataRetriever = DataRetriever("../Datasets/metadata.json")
dataRetriever.retrieveData("glass")
dataset = dataRetriever.getDataSet().dropna()
dataset = dataset.reset_index(drop=True)
# This line is used to normalize the data for Forest Fires
# dataset[dataRetriever.getDataClass()] = np.log(dataset[dataRetriever.getDataClass()]+0.1)
dataset[dataRetriever.getContinuousAttributes()] = (dataset[dataRetriever.getContinuousAttributes()]-dataset[dataRetriever.getContinuousAttributes()].mean())/dataset[dataRetriever.getContinuousAttributes()].std()
test_set = dataset.sample(frac=0.1, random_state=69)
train_set = dataset.drop(test_set.index)
test_set = test_set.reset_index(drop=True)
train_set = train_set.reset_index(drop=True)
ohe = OneHotEncoder()
discrete_attr = dataRetriever.getDescreteAttributes()
if dataRetriever.getDataClass() in discrete_attr:
discrete_attr.remove(dataRetriever.getDataClass())
datasetEncoded = ohe.train_fit(train_set, dataRetriever.getDescreteAttributes())
testEncoded = ohe.fit(test_set)
output = None
nn = NeuralNetwork(datasetEncoded, 0, [], dataRetriever.getPredictionType(), dataRetriever.getDataClass())
for i in range(maxItter):
# We don't call an inital feedforward because backpropagate starts with a feedforward call
# batch_size represents the number of data points per batch
output = nn._back_propagate(learning_rate=learning_rate, batch_size=batch_size)
final = nn.test(testEncoded.drop(dataRetriever.getDataClass(), axis=1))
output = nn._feed_forward(testEncoded.drop(dataRetriever.getDataClass(), axis=1), testing=True)
actual = testEncoded[dataRetriever.getDataClass()]
## ===================== Classification =================
correct = 0
acc = 0
for i, row in enumerate(final):
if row == actual.iloc[i]: correct += 1
# final = final.reshape(final.shape[0])
# MSE = ((actual-final)**2).mean()
# MSEs.append(MSE)
bestNetwork['network'] = nn
bestNetwork['acc'] = acc
bestNetwork['arc'] = [0]
# # ============================================
# # ============ Compare Acc to Most Common Class
values = test_set[dataRetriever.getDataClass()].value_counts()
# USED FOR CLASSIFICATION
# print(f'Accuracy: {acc}')
# print(f'Max Class Prior: {values.max()/values.sum()}')
# print(f"Class Distribution:\n{values}")
# print("Final: ", final)
# print("Actual: ", list(actual))
# print()
numOfLayer = len(nodes_per_hidden_layer)
print("Number of Hidden Layers: ", numOfLayer)
for layer in range(numOfLayer):
print(f"Layer Number: {layer + 1}")
combinations = list(itertools.product(*nodes_per_hidden_layer[:layer+1]))
for combo in combinations:
output = None
print("Node Combination: ",list(combo))
print(combo)
nn = NeuralNetwork(datasetEncoded, layer, list(combo), dataRetriever.getPredictionType(), dataRetriever.getDataClass())
for i in range(maxItter):
# We don't call an inital feedforward because backpropagate starts with a feedforward call
# batch_size represents the number of data points per batch
output = nn._back_propagate(learning_rate=learning_rate, batch_size=batch_size)
final = nn.test(testEncoded.drop(dataRetriever.getDataClass(), axis=1))
output = nn._feed_forward(testEncoded.drop(dataRetriever.getDataClass(), axis=1), testing=True)
actual = testEncoded[dataRetriever.getDataClass()]
## ===================== Classification =================
correct = 0
acc = 0
for i, row in enumerate(final):
if row == actual.iloc[i]: correct += 1
acc = correct/len(test_set)
# # # ============================================
# # # ============ Compare Acc to Most Common Class
values = test_set[dataRetriever.getDataClass()].value_counts()
# USED FOR CLASSIFICATION
# print(f'Accuracy: {acc}')
# print(f'Max Class Prior: {values.max()/values.sum()}')
# # print(f"Class Distribution:\n{values}")
# print("Final: ", final)
# print("Actual: ", list(actual))
# print()
if acc > bestNetwork['acc']:
bestNetwork['network'] = nn
bestNetwork['acc'] = acc
bestNetwork['arc'] = combo
# final = final.reshape(final.shape[0])
# MSE = ((actual-final)**2).mean()
# MSEs.append(MSE)
# if MSE < bestNetwork['acc']:
# bestNetwork['network'] = nn
# bestNetwork['acc'] = MSE
# bestNetwork['arc'] = combo
return bestNetwork#, MSEs
