def validate(model, infile_base, passes, bits):
'''
Trains a model on 0.zip...3.zip and evaluates it on 4.zip.
Args:
model - the model to validate with
infile_base - bare input data name without path or extension
pases - number of passes over data in training
bits - the feature space shoul be of dimension 2**bits
Output:
prints AUC score on 4.zip
'''
for k in range(passes):
print 'Pass %d' % k
for file_num in range(4):
train_set_name = '%s.%d' % (infile_base, file_num)
print 'loading training file: ' + train_set_name
x, y = util.load_sparse(train_set_name, n_features=2**bits, verbose=False)
model.partial_fit(x, y, classes=[0., 1.])
val_set_name = infile_base + '.4'
print 'loading validation set...'
x, y = util.load_sparse(val_set_name, n_features=2**bits, verbose=False)
dv = model.decision_function(x)
score = roc_auc_score(y, dv)
print 'AUC: %.4f' % score
def validate(model, infile_base, passes, bits):
'''
Trains a model on 0.zip...3.zip and evaluates it on 4.zip.
Args:
model - the model to validate with
infile_base - bare input data name without path or extension
pases - number of passes over data in training
bits - the feature space shoul be of dimension 2**bits
Output:
prints AUC score on 4.zip
'''
for k in range(passes):
print 'Pass %d' % k
for file_num in range(4):
train_set_name = '%s.%d' % (infile_base, file_num)
print 'loading training file: ' + train_set_name
x, y = util.load_sparse(train_set_name,
n_features=2**bits,
verbose=False)
model.partial_fit(x, y, classes=[0., 1.])
val_set_name = infile_base + '.4'
print 'loading validation set...'
x, y = util.load_sparse(val_set_name, n_features=2**bits, verbose=False)
dv = model.decision_function(x)
score = roc_auc_score(y, dv)
print 'AUC: %.4f' % score
def avg_validate(n_models, base_model, infile_base, passes, bits):
'''
Runs a batch of linear models over 0.zip to 3.zip, with the input files
presented to each in a random order. Produces a prediction by averaging.
Prints out the AUC score of the average prediction on 4.zip.
Args:
n_models - the number of models to produce
base_model - a model that is cloned to produce the models
infile_base - bare input data name without path or extension
pases - number of passes over data in training
bits - the feature space shoul be of dimension 2**bits
Output:
prints AUC score on 4.zip
'''
models = []
orders = []
l = range(4)
for k in range(n_models):
model_k = base_model.__class__()
model_k.set_params(**base_model.get_params())
models.append(model_k)
random.shuffle(l)
orders.append(l[:])
model_orders = zip(models, orders)
for k in range(passes):
print 'Pass %d' % k
for (m, order) in model_orders:
for file_num in order:
train_set_name = '%s.%d' % (infile_base, file_num)
print 'loading training file: ' + train_set_name
x, y = util.load_sparse(train_set_name,
n_features=2**bits,
verbose=False)
m.partial_fit(x, y, classes=[0., 1.])
val_set_name = infile_base + '.4'
print 'loading validation set...'
x, y = util.load_sparse(val_set_name, n_features=2**bits, verbose=False)
dvs = np.zeros((len(y), n_models))
for (k, m) in enumerate(models):
dvs[:, k] = m.decision_function(x)
dv = dvs.mean(axis=1)
score = roc_auc_score(y, dv)
print 'AUC: %.4f' % score
def avg_run_all(n_models, base_model, infile_base, passes, bits, submit_id):
'''
Runs a batch of linear models over the data, with the input files presented
to each in a random order. Writes a submission based on the models averaged
predictions.
Args:
n_models - the number of models to produce
base_model - a model that is cloned to produce the models
infile_base - bare input data name without path or extension
pases - number of passes over data in training
bits - the feature space shoul be of dimension 2**bits
submit_id - the result is written as submissions/submission_<submit_id>.csv
Writes:
A submission at paths.SUBMIT/submisssion_<submit_id>.csv
'''
models = []
orders = []
l = range(5)
for k in range(n_models):
model_k = base_model.__class__()
model_k.set_params(**base_model.get_params())
models.append(model_k)
random.shuffle(l)
orders.append(l[:])
model_orders = zip(models, orders)
for k in range(passes):
print 'Pass %d' % k
for (m, order) in model_orders:
for file_num in order:
train_set_name = '%s.%d' % (infile_base, file_num)
print 'loading training file: ' + train_set_name
x, y = util.load_sparse(train_set_name,
n_features=2**bits,
verbose=False)
m.partial_fit(x, y, classes=[0., 1.])
test_set_name = infile_base + '.5'
print 'loading test set...'
x, y = util.load_sparse(test_set_name, n_features=2**bits, verbose=False)
dvs = np.zeros((len(y), n_models))
for (k, m) in enumerate(models):
dvs[:, k] = m.decision_function(x)
dv = dvs.mean(axis=1)
util.write_submission(dv, submit_id)
def avg_validate(n_models, base_model, infile_base, passes, bits):
'''
Runs a batch of linear models over 0.zip to 3.zip, with the input files
presented to each in a random order. Produces a prediction by averaging.
Prints out the AUC score of the average prediction on 4.zip.
Args:
n_models - the number of models to produce
base_model - a model that is cloned to produce the models
infile_base - bare input data name without path or extension
pases - number of passes over data in training
bits - the feature space shoul be of dimension 2**bits
Output:
prints AUC score on 4.zip
'''
models = []
orders = []
l = range(4)
for k in range(n_models):
model_k = base_model.__class__()
model_k.set_params(**base_model.get_params())
models.append(model_k)
random.shuffle(l)
orders.append(l[:])
model_orders = zip(models, orders)
for k in range(passes):
print 'Pass %d' % k
for (m, order) in model_orders:
for file_num in order:
train_set_name = '%s.%d' % (infile_base, file_num)
print 'loading training file: ' + train_set_name
x, y = util.load_sparse(train_set_name, n_features=2**bits, verbose=False)
m.partial_fit(x, y, classes=[0., 1.])
val_set_name = infile_base + '.4'
print 'loading validation set...'
x, y = util.load_sparse(val_set_name, n_features=2**bits, verbose=False)
dvs = np.zeros((len(y), n_models))
for (k, m) in enumerate(models):
dvs[:, k] = m.decision_function(x)
dv = dvs.mean(axis=1)
score = roc_auc_score(y, dv)
print 'AUC: %.4f' % score
def avg_run_all(n_models, base_model, infile_base, passes, bits, submit_id):
'''
Runs a batch of linear models over the data, with the input files presented
to each in a random order. Writes a submission based on the models averaged
predictions.
Args:
n_models - the number of models to produce
base_model - a model that is cloned to produce the models
infile_base - bare input data name without path or extension
pases - number of passes over data in training
bits - the feature space shoul be of dimension 2**bits
submit_id - the result is written as submissions/submission_<submit_id>.csv
Writes:
A submission at paths.SUBMIT/submisssion_<submit_id>.csv
'''
models = []
orders = []
l = range(5)
for k in range(n_models):
model_k = base_model.__class__()
model_k.set_params(**base_model.get_params())
models.append(model_k)
random.shuffle(l)
orders.append(l[:])
model_orders = zip(models, orders)
for k in range(passes):
print 'Pass %d' % k
for (m, order) in model_orders:
for file_num in order:
train_set_name = '%s.%d' % (infile_base, file_num)
print 'loading training file: ' + train_set_name
x, y = util.load_sparse(train_set_name, n_features=2**bits, verbose=False)
m.partial_fit(x, y, classes=[0., 1.])
test_set_name = infile_base + '.5'
print 'loading test set...'
x, y = util.load_sparse(test_set_name, n_features=2**bits, verbose=False)
dvs = np.zeros((len(y), n_models))
for (k, m) in enumerate(models):
dvs[:, k] = m.decision_function(x)
dv = dvs.mean(axis=1)
util.write_submission(dv, submit_id)
def test(model, infile_base, bits):
'''
Predicts on 5.zip with the provided model.
Args:
model - the model to predict with
infile_base - bare input data name without path or extension
bits - the feature space shoul be of dimension 2**bits
Returns:
predictions on 5.zip
'''
test_set_name = infile_base + '.5'
print 'loading test set...'
x, _ = util.load_sparse(test_set_name, n_features=2**bits, verbose=False)
dv = model.decision_function(x)
return dv
def test(model, infile_base, bits):
'''
Predicts on 5.zip with the provided model.
Args:
model - the model to predict with
infile_base - bare input data name without path or extension
bits - the feature space shoul be of dimension 2**bits
Returns:
predictions on 5.zip
'''
test_set_name = infile_base + '.5'
print 'loading test set...'
x, _ = util.load_sparse(test_set_name, n_features=2**bits, verbose=False)
dv = model.decision_function(x)
return dv
def train(model, infile_base, passes, bits):
'''
Trains a model on 0.zip...4.zip.
Args:
model - the model to train
infile_base - bare input data name without path or extension
pases - number of passes over data in training
bits - the feature space shoul be of dimension 2**bits
Side-effects:
model is trained
'''
for k in range(passes):
print 'Pass %d' % k
for file_num in range(5):
train_set_name = '%s.%d' % (infile_base, file_num)
print 'loading training file: ' + train_set_name
x, y = util.load_sparse(train_set_name, n_features=2**bits, verbose=False)
model.partial_fit(x, y, classes=[0., 1.])
def train(model, infile_base, passes, bits):
'''
Trains a model on 0.zip...4.zip.
Args:
model - the model to train
infile_base - bare input data name without path or extension
pases - number of passes over data in training
bits - the feature space shoul be of dimension 2**bits
Side-effects:
model is trained
'''
for k in range(passes):
print 'Pass %d' % k
for file_num in range(5):
train_set_name = '%s.%d' % (infile_base, file_num)
print 'loading training file: ' + train_set_name
x, y = util.load_sparse(train_set_name,
n_features=2**bits,
verbose=False)
model.partial_fit(x, y, classes=[0., 1.])