Is this a data issue, or a model issue? A Keras binary classification model
$begingroup$
I've been trying to create a binary classification model that predicts wether there will be a train delay based on the train and time. Here is a link to the data
The issue I'm having is that my accuracy goes to 94.07 in the first 5 epochs. Meanwhile, my class prediction will always be 0 and never 1.
From what I understand, this is "Accuracy Paradox". A symptom of Class Imbalance. To combat this, I implemented Kfold.
kfold = StratifiedKFold(n_splits=10,shuffle=True)
cvs_scores =
for train,test in kfold.split(X,Y):
history = model.fit(X[train],Y[train],epochs=50,batch_size=15, shuffle = False, verbose = 1)
scores = model.evaluate(X[test],Y[test],verbose=0)
print("%s: %.2f%%" % (model.metrics_names[1],scores[1]*100))
cvs_scores.append(scores[1] * 100)
print("%.2f%% (+/- %.2f%%)" % (numpy.mean(cvs_scores),numpy.std(cvs_scores)))
No luck. Still had the same issue as before.
Here is how I import my data:
raw_data = pd.read_csv('MTA_DELAY_DATA_DUMP - Sheet1.csv')
X = raw_data.iloc[1:-2,0:2].dropna().values
Y = raw_data.iloc[1:-2,2:3].dropna().astype(int).values
My Model:
model = Sequential()
model.add(Dense(32, kernel_initializer='uniform', activation='relu',input_dim =2))
model.add(Dense(16, kernel_initializer='uniform', activation='relu'))
model.add(Dense(8, kernel_initializer='uniform', activation='relu'))
model.add(Dense(1, kernel_initializer='uniform', activation='sigmoid'))
model.compile(loss='binary_crossentropy', optimizer=Adam(lr=0.001),metrics=['accuracy'])
history = model.fit(X,Y,epochs=150,batch_size=15, shuffle = False, verbose = 1)
I tried assigning class weights to balance the data out. Even manually deleting 0's in the data, but nothing seems to result in accurate predictions. Am I doing something wrong in the model, or is this simply data that cannot be utilized by machine learning?
machine-learning deep-learning keras dataset data-cleaning
asked 1 min ago
PavlovsCatPavlovsCat
1
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$begingroup$
I've been trying to create a binary classification model that predicts wether there will be a train delay based on the train and time. Here is a link to the data
The issue I'm having is that my accuracy goes to 94.07 in the first 5 epochs. Meanwhile, my class prediction will always be 0 and never 1.
From what I understand, this is "Accuracy Paradox". A symptom of Class Imbalance. To combat this, I implemented Kfold.
kfold = StratifiedKFold(n_splits=10,shuffle=True)
cvs_scores =
for train,test in kfold.split(X,Y):
history = model.fit(X[train],Y[train],epochs=50,batch_size=15, shuffle = False, verbose = 1)
scores = model.evaluate(X[test],Y[test],verbose=0)
print("%s: %.2f%%" % (model.metrics_names[1],scores[1]*100))
cvs_scores.append(scores[1] * 100)
print("%.2f%% (+/- %.2f%%)" % (numpy.mean(cvs_scores),numpy.std(cvs_scores)))
No luck. Still had the same issue as before.
Here is how I import my data:
raw_data = pd.read_csv('MTA_DELAY_DATA_DUMP - Sheet1.csv')
X = raw_data.iloc[1:-2,0:2].dropna().values
Y = raw_data.iloc[1:-2,2:3].dropna().astype(int).values
My Model:
model = Sequential()
model.add(Dense(32, kernel_initializer='uniform', activation='relu',input_dim =2))
model.add(Dense(16, kernel_initializer='uniform', activation='relu'))
model.add(Dense(8, kernel_initializer='uniform', activation='relu'))
model.add(Dense(1, kernel_initializer='uniform', activation='sigmoid'))
model.compile(loss='binary_crossentropy', optimizer=Adam(lr=0.001),metrics=['accuracy'])
history = model.fit(X,Y,epochs=150,batch_size=15, shuffle = False, verbose = 1)
I tried assigning class weights to balance the data out. Even manually deleting 0's in the data, but nothing seems to result in accurate predictions. Am I doing something wrong in the model, or is this simply data that cannot be utilized by machine learning?
machine-learning deep-learning keras dataset data-cleaning
asked 1 min ago
PavlovsCatPavlovsCat
1
New contributor
PavlovsCat is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
I've been trying to create a binary classification model that predicts wether there will be a train delay based on the train and time. Here is a link to the data
The issue I'm having is that my accuracy goes to 94.07 in the first 5 epochs. Meanwhile, my class prediction will always be 0 and never 1.
From what I understand, this is "Accuracy Paradox". A symptom of Class Imbalance. To combat this, I implemented Kfold.
kfold = StratifiedKFold(n_splits=10,shuffle=True)
cvs_scores =
for train,test in kfold.split(X,Y):
history = model.fit(X[train],Y[train],epochs=50,batch_size=15, shuffle = False, verbose = 1)
scores = model.evaluate(X[test],Y[test],verbose=0)
print("%s: %.2f%%" % (model.metrics_names[1],scores[1]*100))
cvs_scores.append(scores[1] * 100)
print("%.2f%% (+/- %.2f%%)" % (numpy.mean(cvs_scores),numpy.std(cvs_scores)))
No luck. Still had the same issue as before.
Here is how I import my data:
raw_data = pd.read_csv('MTA_DELAY_DATA_DUMP - Sheet1.csv')
X = raw_data.iloc[1:-2,0:2].dropna().values
Y = raw_data.iloc[1:-2,2:3].dropna().astype(int).values
My Model:
model = Sequential()
model.add(Dense(32, kernel_initializer='uniform', activation='relu',input_dim =2))
model.add(Dense(16, kernel_initializer='uniform', activation='relu'))
model.add(Dense(8, kernel_initializer='uniform', activation='relu'))
model.add(Dense(1, kernel_initializer='uniform', activation='sigmoid'))
model.compile(loss='binary_crossentropy', optimizer=Adam(lr=0.001),metrics=['accuracy'])
history = model.fit(X,Y,epochs=150,batch_size=15, shuffle = False, verbose = 1)
I tried assigning class weights to balance the data out. Even manually deleting 0's in the data, but nothing seems to result in accurate predictions. Am I doing something wrong in the model, or is this simply data that cannot be utilized by machine learning?
machine-learning deep-learning keras dataset data-cleaning
asked 1 min ago
PavlovsCatPavlovsCat
1
New contributor
PavlovsCat is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
I've been trying to create a binary classification model that predicts wether there will be a train delay based on the train and time. Here is a link to the data
The issue I'm having is that my accuracy goes to 94.07 in the first 5 epochs. Meanwhile, my class prediction will always be 0 and never 1.
From what I understand, this is "Accuracy Paradox". A symptom of Class Imbalance. To combat this, I implemented Kfold.
kfold = StratifiedKFold(n_splits=10,shuffle=True)
cvs_scores =
for train,test in kfold.split(X,Y):
history = model.fit(X[train],Y[train],epochs=50,batch_size=15, shuffle = False, verbose = 1)
scores = model.evaluate(X[test],Y[test],verbose=0)
print("%s: %.2f%%" % (model.metrics_names[1],scores[1]*100))
cvs_scores.append(scores[1] * 100)
print("%.2f%% (+/- %.2f%%)" % (numpy.mean(cvs_scores),numpy.std(cvs_scores)))
No luck. Still had the same issue as before.
Here is how I import my data:
raw_data = pd.read_csv('MTA_DELAY_DATA_DUMP - Sheet1.csv')
X = raw_data.iloc[1:-2,0:2].dropna().values
Y = raw_data.iloc[1:-2,2:3].dropna().astype(int).values
My Model:
model = Sequential()
model.add(Dense(32, kernel_initializer='uniform', activation='relu',input_dim =2))
model.add(Dense(16, kernel_initializer='uniform', activation='relu'))
model.add(Dense(8, kernel_initializer='uniform', activation='relu'))
model.add(Dense(1, kernel_initializer='uniform', activation='sigmoid'))
model.compile(loss='binary_crossentropy', optimizer=Adam(lr=0.001),metrics=['accuracy'])
history = model.fit(X,Y,epochs=150,batch_size=15, shuffle = False, verbose = 1)
I tried assigning class weights to balance the data out. Even manually deleting 0's in the data, but nothing seems to result in accurate predictions. Am I doing something wrong in the model, or is this simply data that cannot be utilized by machine learning?
machine-learning deep-learning keras dataset data-cleaning
machine-learning deep-learning keras dataset data-cleaning
asked 1 min ago
PavlovsCatPavlovsCat
1
New contributor
PavlovsCat is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 1 min ago
PavlovsCatPavlovsCat
1
New contributor
PavlovsCat is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 1 min ago
PavlovsCatPavlovsCat
1
New contributor
PavlovsCat is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 1 min ago
PavlovsCatPavlovsCat
1
asked 1 min ago
PavlovsCatPavlovsCat
1
1
New contributor
PavlovsCat is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
PavlovsCat is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
PavlovsCat is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
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