def calc_perf(y_test, y_test_scores, P_test, U, U_0, U_1, U_np, lin_model, X_test, model_name):
print('logistic regression evaluation...')
performance = list(evaluate_performance_sim(y_test, y_test_scores, P_test))
print('calculating emd...')
performance.append(emd_method(U_0, U_1))
print('calculating consistency...')
performance.append(get_consistency(U_np, lin_model, n_neighbors=k_nbrs, based_on=X_ori_np))
print('calculating stat diff...')
performance.append(stat_diff(X_test, P_test, lin_model))
print('calculating equal odds...')
performance.append(equal_odds(X_test, y_test, P_test, lin_model))
make_cal_plot(X_test, y_test, P_test, lin_model, model_name)
return performance
def test_in_one(n_dim,
batch_size,
n_iter,
C,
alpha,
compute_emd=True,
k_nbrs=3,
emd_method=emd_samples):
global X, P, y, df, X_test
reps = {}
X_no_p = df.drop(['Y', 'P'], axis=1).values
# declare variables
X = torch.tensor(X).float()
P = torch.tensor(P).long()
# train-test split
data_train, data_test = split_data_np(
(X.data.cpu().numpy(), P.data.cpu().numpy(), y), 0.7)
X_train, P_train, y_train = data_train
X_test, P_test, y_test = data_test
X_train_no_p = X_train[:, :-1]
X_test_no_p = X_test[:, :-1]
X_u = X[P == 1]
X_n = X[P == 0]
# AE.
model_ae = FairRep(len(X[0]), n_dim)
train_rep(model_ae,
0.01,
X,
P,
n_iter,
10,
batch_size,
alpha=0,
C_reg=0,
compute_emd=compute_emd,
adv=False,
verbose=True)
# AE_P.
model_ae_P = FairRep(len(X[0]) - 1, n_dim - 1)
train_rep(model_ae_P,
0.01,
X_no_p,
P,
n_iter,
10,
batch_size,
alpha=0,
C_reg=0,
compute_emd=compute_emd,
adv=False,
verbose=True)
# NFR.
model_name = 'compas_Original'
model_nfr = FairRep(len(X[0]), n_dim)
X = torch.tensor(X).float()
P = torch.tensor(P).long()
train_rep(model_nfr,
0.01,
X,
P,
n_iter,
10,
batch_size,
alpha=alpha,
C_reg=0,
compute_emd=compute_emd,
adv=True,
verbose=True)
results = {}
print('begin testing.')
X_ori_np = X.data.cpu().numpy()
# Original.
print('logistic regression on the original...')
lin_model, y_test_scores, performance = get_model_preds(
X_train, y_train, P_train, X_test, y_test, P_test, model_name)
y_hats[model_name] = get_preds_on_full_dataset(X, lin_model)
reps[model_name] = None
performance.append(emd_method(X_n, X_u))
performance.append(
get_consistency(X.data.cpu().numpy(), lin_model, n_neighbors=k_nbrs))
performance.append(stat_diff(X.data.cpu().numpy(), P, lin_model))
performance.append(equal_odds(X.data.cpu().numpy(), y, P, lin_model))
make_cal_plot(X.data.cpu().numpy(), y, P, lin_model, model_name)
results[model_name] = performance
# Original-P.
model_name = 'compas_Original-P'
print('logistic regression on the original-P')
lin_model, y_test_scores, performance = get_model_preds(
X_train_no_p, y_train, P_train, X_test_no_p, y_test, P_test,
model_name)
y_hats[model_name] = get_preds_on_full_dataset(X[:, :-1], lin_model)
reps[model_name] = None
performance.append(emd_method(X_n[:, :-1], X_u[:, :-1]))
print('calculating consistency...')
performance.append(
get_consistency(X[:, :-1].data.cpu().numpy(),
lin_model,
n_neighbors=k_nbrs))
print('calculating stat diff...')
performance.append(stat_diff(X[:, :-1].data.cpu().numpy(), P, lin_model))
performance.append(
equal_odds(X[:, :-1].data.cpu().numpy(), y, P, lin_model))
make_cal_plot(X[:, :-1].data.cpu().numpy(), y, P, lin_model, model_name)
results[model_name] = performance
# use encoder
model_name = 'compas_AE'
U_0 = model_ae.encoder(X[P == 0]).data
U_1 = model_ae.encoder(X[P == 1]).data
U = model_ae.encoder(X).data
U_np = U.cpu().numpy()
data_train, data_test = split_data_np((U_np, P.data.cpu().numpy(), y), 0.7)
X_train, P_train, y_train = data_train
X_test, P_test, y_test = data_test
print('logistic regression on AE...')
lin_model = RandomForestClassifier()
lin_model.fit(X_train, y_train)
y_test_scores = sigmoid(
(X_test.dot(lin_model.coef_.T) + lin_model.intercept_).flatten())
y_hats[model_name] = get_preds_on_full_dataset(U, lin_model)
reps[model_name] = U
def calc_perf(y_test, y_test_scores, P_test, U, U_0, U_1, U_np, lin_model,
X_test, model_name):
print('logistic regression evaluation...')
performance = list(
evaluate_performance_sim(y_test, y_test_scores, P_test))
print('calculating emd...')
performance.append(emd_method(U_0, U_1))
print('calculating consistency...')
performance.append(
get_consistency(U_np,
lin_model,
n_neighbors=k_nbrs,
based_on=X_ori_np))
print('calculating stat diff...')
performance.append(stat_diff(X_test, P_test, lin_model))
print('calculating equal odds...')
performance.append(equal_odds(X_test, y_test, P_test, lin_model))
make_cal_plot(X_test, y_test, P_test, lin_model, model_name)
return performance
performance = calc_perf(y_test, y_test_scores, P_test, U, U_0, U_1, U_np,
lin_model, X_test, model_name)
results[model_name] = (performance)
# AE minus P
model_name = 'compas_AE_P'
U_0 = model_ae_P.encoder(X[:, :-1][P == 0]).data
U_1 = model_ae_P.encoder(X[:, :-1][P == 1]).data
U = model_ae_P.encoder(X[:, :-1]).data
print('ae-p emd afterwards: ' + str(emd_method(U_0, U_1)))
U_np = U.cpu().numpy()
data_train, data_test = split_data_np((U_np, P.data.cpu().numpy(), y), 0.7)
X_train, P_train, y_train = data_train
X_test, P_test, y_test = data_test
print('logistic regression on AE-P...')
lin_model = RandomForestClassifier()
lin_model.fit(X_train, y_train)
y_test_scores = sigmoid(
(X_test.dot(lin_model.coef_.T) + lin_model.intercept_).flatten())
y_hats[model_name] = get_preds_on_full_dataset(U, lin_model)
reps[model_name] = U
performance = calc_perf(y_test, y_test_scores, P_test, U, U_0, U_1, U_np,
lin_model, X_test, model_name)
results[model_name] = (performance)
model_name = 'compas_NFR'
U_0 = model_nfr.encoder(X[P == 0]).data
U_1 = model_nfr.encoder(X[P == 1]).data
U = model_nfr.encoder(X).data
print('nfr emd afterwards: ' + str(emd_method(U_0, U_1)))
U_np = U.cpu().numpy()
data_train, data_test = split_data_np((U_np, P.data.cpu().numpy(), y), 0.7)
X_train, P_train, y_train = data_train
X_test, P_test, y_test = data_test
print('logistic regression on NFR...')
lin_model = RandomForestClassifier()
lin_model.fit(X_train, y_train)
y_test_scores = sigmoid(
(X_test.dot(lin_model.coef_.T) + lin_model.intercept_).flatten())
y_hats[model_name] = get_preds_on_full_dataset(U, lin_model)
reps[model_name] = U
performance = calc_perf(y_test, y_test_scores, P_test, U, U_0, U_1, U_np,
lin_model, X_test, model_name)
results[model_name] = (performance)
return results, y_hats, reps