def AL(path, response, sensitive, atr, demo_option, r, b, alpha, rnd,
data_option, flag_demo):
demo_test = []
demo_cset = []
_Xl, _Xl_s, n, m, _yl, _Xu, _Xu_s, _yu, _Xt, _Xt_s, _yt, _Cset, _Cset_s, _Cset_y = pr.data_prep(
path, response, sensitive, atr, r, rnd, data_option, flag_demo)
overall_score = []
# train the model for the first time
clf = LogisticRegression(solver='liblinear').fit(_Xl, _yl)
theta = clf.coef_.T
for Iter in range(b):
u = len(_Xu)
E_corr = np.zeros(u)
# print("Iteration:", Iter)
a = alpha[min(10, math.floor(Iter / int(b / 11)))]
# print(a)
score = clf.score(_Xt, _yt)
overall_score = np.append(overall_score, score)
# print("test score is:", score)
demo_test = np.append(
demo_test, dm.Demo(_Xt, _Xt_s, _yt, clf=clf, option=demo_option))
probas_val = clf.predict_proba(_Xu)
e = (-probas_val * np.log2(probas_val)).sum(axis=1)
e_all = (e)
selection = np.argsort(e_all)[::-1][0]
_Xl = np.append(_Xl, [_Xu[selection]], axis=0)
_Xl_s = np.append(_Xl_s, [_Xu_s[selection]], axis=0)
_yl = np.append(_yl, [_yu[selection]], axis=0)
clf = LogisticRegression(solver='liblinear').fit(_Xl, _yl)
_Xu = np.delete(_Xu, selection, 0)
_yu = np.delete(_yu, selection, 0)
return demo_test, _Xl, _Xl_s, _yl, clf, overall_score
def FAL(path, response, sensitive, atr, demo_option, r, b, alpha, rnd,
data_option, flag_demo, k):
_Xl, _Xl_s, n, m, _yl, _Xu, _Xu_s, _yu, _Xt, _Xt_s, _yt, _Cset, _Cset_s, _Cset_y = pr.data_prep(
path, response, sensitive, atr, r, rnd, data_option, flag_demo)
overall_score = np.zeros(b)
Time = np.zeros(b)
demo = np.zeros(b)
# train the model for the first time
clf = LogisticRegression(solver='liblinear').fit(_Xl, _yl)
theta = clf.coef_.T
covXS = np.cov(
np.concatenate((_Xu, _Xu_s.reshape(_Xu_s.shape[0], 1)),
1).T)[0:m, -1].reshape(m, 1)
fbc.init(_Xl, _yl, covXS, theta)
t1 = time()
for Iter in range(b):
u = len(_Xu)
ECov = np.zeros(u)
# record stats to be reported -- these lines are added for the purpose of experiments and are not part of the algorithm
a = alpha[min(10, math.floor(Iter / int(b / 11)))]
overall_score[Iter] = clf.score(_Xt, _yt)
demo[Iter] = dm.Demo(_Xt, _Xt_s, _yt, clf=clf, option=demo_option)
#compute the entropy and expected covariance improvement
probas_val = clf.predict_proba(_Xu)
e = (-probas_val * np.log2(probas_val)).sum(axis=1)
covYS1 = np.dot(covXS.transpose(), theta)[0, 0]
idx = np.argsort(e)[::-1][0:k]
ECov = np.zeros(k)
for j in range(0, len(idx)):
tmp = clf.predict_proba(_Xu[idx[j]].reshape(1, -1)).reshape(-1, 1)
ECov[j] = fbc.efi(_Xu[idx[j]], tmp)
# find the argmax and add label it
selection = idx[np.argsort(ECov)[::-1][0]]
_Xl_tmp = np.append(_Xl, [_Xu[selection]], axis=0)
_yl_tmp = np.append(_yl, [_yu[selection]], axis=0)
clf_tmp = LogisticRegression(solver='liblinear').fit(_Xl_tmp, _yl_tmp)
theta_tmp = clf_tmp.coef_.T
covYS2 = np.dot(covXS.transpose(), theta_tmp)[0, 0]
#replicate the points that improves unfairness reduction after labeling them
if abs(covYS2) - abs(covYS1) < 0:
_Xl = np.append(_Xl, [_Xu[selection]], axis=0)
_yl = np.append(_yl, [_yu[selection]], axis=0)
_Xl_s = np.append(_Xl_s, [_Xu_s[selection]], axis=0)
_Xl = np.append(_Xl, [_Xu[selection]], axis=0)
_yl = np.append(_yl, [_yu[selection]], axis=0)
_Xl_s = np.append(_Xl_s, [_Xu_s[selection]], axis=0)
# update the model
clf = LogisticRegression(solver='liblinear').fit(_Xl, _yl)
theta = clf.coef_.T
fbc.updateAggs(_Xu[selection], _yu[selection], theta)
_Xu = np.delete(_Xu, selection, 0)
_yu = np.delete(_yu, selection, 0)
_Xu_s = np.delete(_Xu_s, selection, 0)
ECov = ECov[:-1]
Time[Iter] = time() - t1
return demo, _Xl, _Xl_s, _yl, theta, clf, overall_score
def FAL(path, response, sensitive, atr, demo_option, r, b, alpha, rnd,
data_option):
_Xl, _Xl_s, n, m, _yl, _Xu, _Xu_s, _yu, _Xt, _Xt_s, _yt, _Cset, _Cset_s, _Cset_y = pr.data_prep(
path, response, sensitive, atr, r, rnd, data_option)
overall_score = np.zeros(b)
demo = np.zeros(b)
# train the model for the first time
clf = LogisticRegression(solver='liblinear').fit(_Xl, _yl)
theta = clf.coef_.T
covXS = np.cov(
np.concatenate((_Xu, _Xu_s.reshape(_Xu_s.shape[0], 1)),
1).T)[0:m, -1].reshape(m, 1)
fbc.init(_Xl, _yl, covXS, theta)
for Iter in range(b):
u = len(_Xu)
ECov = np.zeros(u)
# record stats to be reported -- these lines are added for the purpose of experiments and are not part of the algorithm
a = alpha[min(10, math.floor(Iter / int(b / 11)))]
overall_score[Iter] = clf.score(_Xt, _yt)
demo[Iter] = dm.Demo(_Xt, _Xt_s, _yt, clf=clf, option=demo_option)
#compute the entropy and expected covariance improvement for all instances in U
probas_val = clf.predict_proba(_Xu)
e = (-probas_val * np.log2(probas_val)).sum(axis=1)
covYS = np.dot(covXS.transpose(), theta)[0, 0]
for j in range(0, u):
tmp = clf.predict_proba(_Xu[j].reshape(1, -1)).reshape(-1, 1)
ECov[j] = fbc.efi(_Xu[j], tmp)
Emax = ECov.max()
Emin = ECov.min()
# normalize the values
if Emax > Emin: ECov = (ECov - Emin) / (Emax - Emin)
emin = e[0:u].min()
emax = e[0:u].max()
if emax > emin: e = (e[0:u] - emin) / (emax - emin)
e_all = a * e + (1 - a) * ECov
# find the argmax and label it
selection = np.argsort(e_all)[::-1][0]
_Xl = np.append(_Xl, [_Xu[selection]], axis=0)
_yl = np.append(_yl, [_yu[selection]], axis=0)
# update the model and U
clf = LogisticRegression(solver='liblinear').fit(_Xl, _yl)
theta = clf.coef_.T
fbc.updateAggs(_Xu[selection], _yu[selection], theta)
_Xu = np.delete(_Xu, selection, 0)
_yu = np.delete(_yu, selection, 0)
ECov = ECov[:-1]
return demo, _Xl, theta, overall_score
def RL(path,response,sensitive,atr,demo_option,r,b,alpha,rnd,data_option,flag_demo):
demo_test=[]
_Xl,_Xl_s,n,m,_yl,_Xu,_Xu_s,_yu,_Xt,_Xt_s,_yt,_Cset,_Cset_s,_Cset_y=pr.data_prep(path,response,sensitive,atr,r,rnd,data_option,flag_demo)
index = np.arange(len(_Xu))
rnd_id = np.random.choice(index,b)
_Xl = np.append(_Xl,_Xu[rnd_id],axis=0)
_Xl_s = np.append(_Xl_s,_Xu_s[rnd_id],axis=0)
_yl=np.append(_yl,_yu[rnd_id],axis=0)
clf = LogisticRegression(solver= 'liblinear').fit(_Xl, _yl)
theta = clf.coef_.T
score=clf.score(_Xt,_yt)
demo_test=np.append(demo_test,dm.Demo(_Xt,_Xt_s,_yt,clf=clf,option=demo_option))
return demo_test,_Xl,clf,score
def AL(path, response, sensitive, atr, demo_option, r, b, alpha, rnd,
data_option):
demo_test = []
demo_cset = []
_Xl, _Xl_s, n, m, _yl, _Xu, _Xu_s, _yu, _Xt, _Xt_s, _yt, _Cset, _Cset_s, _Cset_y = pr.data_prep(
path, response, sensitive, atr, r, rnd, data_option)
overall_score = []
# train the model for the first time
clf = LogisticRegression(solver='liblinear').fit(_Xl, _yl)
theta = clf.coef_.T
for Iter in range(b):
u = len(_Xu)
E_corr = np.zeros(u)
a = alpha[min(10, math.floor(Iter / int(b / 11)))]
# record stats to be reported -- these lines are added for the purpose of experiments and are not part of the algorithm
score = clf.score(_Xt, _yt)
overall_score = np.append(overall_score, score)
demo_test = np.append(
demo_test, dm.Demo(_Xt, _Xt_s, _yt, clf=clf, option=demo_option))
#compute the entropy for all instances in U
probas_val = clf.predict_proba(_Xu)
e = (-probas_val * np.log2(probas_val)).sum(axis=1)
e_all = (e)
# find the argmax and label it
selection = np.argsort(e_all)[::-1][0]
_Xl = np.append(_Xl, [_Xu[selection]], axis=0)
_Xl_s = np.append(_Xl_s, [_Xu_s[selection]], axis=0)
_yl = np.append(_yl, [_yu[selection]], axis=0)
# update the model and U
clf = LogisticRegression(solver='liblinear').fit(_Xl, _yl)
_Xu = np.delete(_Xu, selection, 0)
_yu = np.delete(_yu, selection, 0)
return demo_test, _Xl, _Xl_s, _yl, clf, overall_score
def RL(path, response, sensitive, atr, demo_option, r, b, alpha, rnd,
data_option, flag_demo):
demo_test = []
f1score = []
_Xl, _Xl_s, n, m, _yl, _Xu, _Xu_s, _yu, _Xt, _Xt_s, _yt, _Cset, _Cset_s, _Cset_y = pr.data_prep(
path, response, sensitive, atr, r, rnd, data_option, flag_demo)
index = np.arange(len(_Xu))
rnd_id = np.random.choice(index, b)
_Xl = np.append(_Xl, _Xu[rnd_id], axis=0)
_Xl_s = np.append(_Xl_s, _Xu_s[rnd_id], axis=0)
_yl = np.append(_yl, _yu[rnd_id], axis=0)
clf = DemographicParityClassifier(sensitive_cols=-1,
covariance_threshold=0.5)
_Xl_with_s = np.append(_Xl, _Xl_s[:, None], axis=1)
clf.fit(_Xl_with_s, _yl)
_Xt_with_s = np.append(_Xt, _Xt_s[:, None], axis=1)
_Cset_with_s = np.append(_Cset, _Cset_s[:, None], axis=1)
score = clf.score(_Xt_with_s, _yt)
demo_test = demo_test = dm.Demo(_Xt_with_s,
_Xt_s,
_yt,
clf=clf,
option=demo_option)
return demo_test, _Xl, _Xl_s, _yl, clf, score, f1score
def FAL(path, response, sensitive, atr, demo_option, r, b, alpha, rnd,
data_option, flag_demo):
demo_test = []
demo_cset = []
Time = np.zeros(b)
_Xl, _Xl_s, n, m, _yl, _Xu, _Xu_s, _yu, _Xt, _Xt_s, _yt, _Cset, _Cset_s, _Cset_y = pr.data_prep(
path, response, sensitive, atr, r, rnd, data_option, flag_demo)
overall_score = []
f1score = []
# train the model for the first time
clf = LogisticRegression(solver='liblinear').fit(_Xl, _yl)
t1 = time()
for Iter in range(b):
u = len(_Xu)
E_corr = np.zeros(u)
# print("Iteration:", Iter)
a = alpha[min(10, math.floor(Iter / int(b / 11)))]
score = clf.score(_Xt, _yt)
overall_score = np.append(overall_score, score)
y_pred = clf.predict(_Xt)
demo_test = np.append(
demo_test, dm.Demo(_Xt, _Xt_s, _yt, clf=clf, option=demo_option))
demo_cset = dm.Demo(_Cset,
_Cset_s,
_Cset_y,
clf=clf,
option=demo_option)
probas_val = clf.predict_proba(_Xu)
e = (-probas_val * np.log2(probas_val)).sum(axis=1)
for j in range(0, u):
f_tmp = []
for k in range(0, 2):
_Xl_tmp = np.append(_Xl, [_Xu[j]], axis=0)
_yl_tmp = np.append(_yl, [k], axis=0)
clf_tmp = LogisticRegression(solver='liblinear').fit(
_Xl_tmp, _yl_tmp)
f_tmp = np.append(
f_tmp,
dm.Demo(_Cset,
_Cset_s,
_Cset_y,
clf=clf_tmp,
option=demo_option))
f_tmp[np.isnan(f_tmp)] = 0
p = clf.predict_proba(_Xu)[j][0]
E_corr[j] = (f_tmp).dot([p, 1 - p])
E_corr_scaled = ((E_corr.max() - E_corr) /
(E_corr.max() - E_corr.min()))
E_corr_scaled[np.isnan(E_corr_scaled)] = 0
e_all = ((e[0:u] - e[0:u].min()) / (e[0:u].max() - e[0:u].min()))
e_all = a * e_all + (1 - a) * E_corr_scaled
selection = np.argsort(e_all)[::-1][0]
_Xl = np.append(_Xl, [_Xu[selection]], axis=0)
_Xl_s = np.append(_Xl_s, [_Xu_s[selection]], axis=0)
_yl = np.append(_yl, [_yu[selection]], axis=0)
clf = LogisticRegression(solver='liblinear').fit(_Xl, _yl)
_Xu = np.delete(_Xu, selection, 0)
_yu = np.delete(_yu, selection, 0)
_Xu_s = np.delete(_Xu_s, selection, 0)
Time[Iter] = time() - t1
return demo_test, _Xl, _Xl_s, _yl, clf, overall_score, f1score, Time
def FAL(path, response, sensitive, atr, demo_option, r, b, alpha, rnd,
data_option, flag_demo, kk):
demo_test = []
demo_cset = []
Time = np.zeros(b)
_Xl, _Xl_s, n, m, _yl, _Xu, _Xu_s, _yu, _Xt, _Xt_s, _yt, _Cset, _Cset_s, _Cset_y = pr.data_prep(
path, response, sensitive, atr, r, rnd, data_option, flag_demo)
overall_score = []
f1score = []
# train the model for the first time
clf = LogisticRegression(solver='liblinear').fit(_Xl, _yl)
t1 = time()
for Iter in range(b):
u = len(_Xu)
# print("Iteration:", Iter)
a = alpha[min(10, math.floor(Iter / int(b / 11)))]
score = clf.score(_Xt, _yt)
overall_score = np.append(overall_score, score)
y_pred = clf.predict(_Xt)
demo_test = np.append(
demo_test, dm.Demo(_Xt, _Xt_s, _yt, clf=clf, option=demo_option))
demo_cset1 = dm.Demo(_Cset,
_Cset_s,
_Cset_y,
clf=clf,
option=demo_option)
probas_val = clf.predict_proba(_Xu)
e = (-probas_val * np.log2(probas_val)).sum(axis=1)
idx = np.argsort(e)[::-1][0:kk]
E_corr = np.zeros(kk)
demo_f = np.zeros((kk, 2))
for j in range(0, len(idx)):
f_tmp = []
for k in range(0, 2):
_Xl_tmp = np.append(_Xl, [_Xu[idx[j]]], axis=0)
_yl_tmp = np.append(_yl, [k], axis=0)
clf_tmp = LogisticRegression(solver='liblinear').fit(
_Xl_tmp, _yl_tmp)
f_tmp = np.append(
f_tmp,
dm.Demo(_Cset,
_Cset_s,
_Cset_y,
clf=clf_tmp,
option=demo_option))
f_tmp[np.isnan(f_tmp)] = 0
demo_f[j] = f_tmp
p = clf.predict_proba(_Xu)[idx[j]][0]
E_corr[j] = (f_tmp).dot([p, 1 - p])
# find the argmax and add label it
selection = idx[np.argsort(E_corr)[::1][0]]
demo_cset2 = demo_f[np.argsort(E_corr)[::1][0], int(_yu[selection])]
#replicate the points that improves unfairness reduction after labeling them
if demo_cset2 - demo_cset1 < 0:
_Xl = np.append(_Xl, [_Xu[selection]], axis=0)
_yl = np.append(_yl, [_yu[selection]], axis=0)
_Xl_s = np.append(_Xl_s, [_Xu_s[selection]], axis=0)
_Xl = np.append(_Xl, [_Xu[selection]], axis=0)
_Xl_s = np.append(_Xl_s, [_Xu_s[selection]], axis=0)
_yl = np.append(_yl, [_yu[selection]], axis=0)
clf = LogisticRegression(solver='liblinear').fit(_Xl, _yl)
_Xu = np.delete(_Xu, selection, 0)
_yu = np.delete(_yu, selection, 0)
_Xu_s = np.delete(_Xu_s, selection, 0)
Time[Iter] = time() - t1
return demo_test, _Xl, _Xl_s, _yl, clf, overall_score, f1score
def FAL(path, response, sensitive, atr, demo_option, r, b, alpha, rnd,
data_option):
demo_test = []
demo_cset = []
_Xl, _Xl_s, n, m, _yl, _Xu, _Xu_s, _yu, _Xt, _Xt_s, _yt, _Cset, _Cset_s, _Cset_y = pr.data_prep(
path, response, sensitive, atr, r, rnd, data_option)
overall_score = []
# train the model for the first time
clf = LogisticRegression(solver='liblinear').fit(_Xl, _yl)
for Iter in range(b):
u = len(_Xu)
E_corr = np.zeros(u)
a = alpha[min(10, math.floor(Iter / int(b / 11)))]
# record stats to be reported -- these lines are added for the purpose of experiments and are not part of the algorithm
score = clf.score(_Xt, _yt)
overall_score = np.append(overall_score, score)
demo_test = np.append(
demo_test, dm.Demo(_Xt, _Xt_s, _yt, clf=clf, option=demo_option))
demo_cset = dm.Demo(_Cset,
_Cset_s,
_Cset_y,
clf=clf,
option=demo_option)
#compute the entropy and expected fairness for all instances in U
probas_val = clf.predict_proba(_Xu)
e = (-probas_val * np.log2(probas_val)).sum(axis=1)
for j in range(0, u):
f_tmp = []
for k in range(0, 2):
_Xl_tmp = np.append(_Xl, [_Xu[j]], axis=0)
_yl_tmp = np.append(_yl, [k], axis=0)
clf_tmp = LogisticRegression(solver='liblinear').fit(
_Xl_tmp, _yl_tmp)
f_tmp = np.append(
f_tmp,
dm.Demo(_Cset,
_Cset_s,
_Cset_y,
clf=clf_tmp,
option=demo_option))
f_tmp[np.isnan(f_tmp)] = 0
p = clf.predict_proba(_Xu)[j][0]
E_corr[j] = (f_tmp).dot([p, 1 - p])
# normalize the values
E_corr_scaled = ((E_corr.max() - E_corr) /
(E_corr.max() - E_corr.min()))
E_corr_scaled[np.isnan(E_corr_scaled)] = 0
e_all = ((e[0:u] - e[0:u].min()) / (e[0:u].max() - e[0:u].min()))
e_all = a * e_all + (1 - a) * E_corr_scaled
# find the argmax and label it
selection = np.argsort(e_all)[::-1][0]
_Xl = np.append(_Xl, [_Xu[selection]], axis=0)
_Xl_s = np.append(_Xl_s, [_Xu_s[selection]], axis=0)
_yl = np.append(_yl, [_yu[selection]], axis=0)
# update the model and U
clf = LogisticRegression(solver='liblinear').fit(_Xl, _yl)
_Xu = np.delete(_Xu, selection, 0)
_yu = np.delete(_yu, selection, 0)
return demo_test, _Xl, _Xl_s, _yl, clf, overall_score