def randproj(tx, ty, rx, ry):
compressor = RandomProjection(tx[1].size)
newtx = compressor.fit_transform(tx)
compressor = RandomProjection(tx[1].size)
newrx = compressor.fit_transform(rx)
em(newtx, ty, newrx, ry, add="wRPtr", times=10)
km(newtx, ty, newrx, ry, add="wRPtr", times=10)
nn(newtx, ty, newrx, ry, add="wRPtr")
def best_rp_nba(self):
dh = data_helper()
X_train, X_test, y_train, y_test = dh.get_nba_data()
scl = RobustScaler()
X_train_scl = scl.fit_transform(X_train)
X_test_scl = scl.transform(X_test)
rp = GaussianRandomProjection(n_components=X_train_scl.shape[1])
X_train_transformed = rp.fit_transform(X_train_scl, y_train)
X_test_transformed = rp.transform(X_test_scl)
## top 2
kurt = kurtosis(X_train_transformed)
i = kurt.argsort()[::-1]
X_train_transformed_sorted = X_train_transformed[:, i]
X_train_transformed = X_train_transformed_sorted[:,0:2]
kurt = kurtosis(X_test_transformed)
i = kurt.argsort()[::-1]
X_test_transformed_sorted = X_test_transformed[:, i]
X_test_transformed = X_test_transformed_sorted[:,0:2]
# save
filename = './' + self.save_dir + '/nba_rp_x_train.txt'
pd.DataFrame(X_train_transformed).to_csv(filename, header=False, index=False)
filename = './' + self.save_dir + '/nba_rp_x_test.txt'
pd.DataFrame(X_test_transformed).to_csv(filename, header=False, index=False)
filename = './' + self.save_dir + '/nba_rp_y_train.txt'
pd.DataFrame(y_train).to_csv(filename, header=False, index=False)
filename = './' + self.save_dir + '/nba_rp_y_test.txt'
pd.DataFrame(y_test).to_csv(filename, header=False, index=False)
def project_points(points, dim=None):
if dim is None:
dim = 5
#dim = min(max(int(np.log(len(points))), 2), 15)
proj = GaussianRandomProjection(n_components=dim)
return proj.fit_transform(points)
def test_fixed_state_transformer():
random_state = check_random_state(0)
X = random_state.rand(500, 100)
# Check that setting the random_seed is equivalent to set the
# random_state
transf = GaussianRandomProjection(n_components=5, random_state=0)
fixed_transf = FixedStateTransformer(GaussianRandomProjection(n_components=5), random_seed=0)
assert_array_almost_equal(fixed_transf.fit_transform(X), transf.fit_transform(X))
# Check that set_params doesn't modify the results
fixed_transf = FixedStateTransformer(GaussianRandomProjection(n_components=5, random_state=None))
fixed_transf2 = FixedStateTransformer(GaussianRandomProjection(random_state=1, n_components=5))
assert_array_almost_equal(fixed_transf.fit_transform(X), fixed_transf2.fit_transform(X))
# Check that it work when there is no random_state
fixed_transf = FixedStateTransformer(IdentityProjection())
assert_array_almost_equal(fixed_transf.fit_transform(X), X)
X.reset_index(inplace=True, drop=True)
Y.reset_index(inplace=True, drop=True)
# Handling outliers
# Y[Y > 150] = Y.quantile(0.99)
pca = PCA(n_components=5)
ica = FastICA(n_components=5, max_iter=1000)
tsvd = TruncatedSVD(n_components=5)
gp = GaussianRandomProjection(n_components=5)
sp = SparseRandomProjection(n_components=5, dense_output=True)
x_pca = pd.DataFrame(pca.fit_transform(X))
x_ica = pd.DataFrame(ica.fit_transform(X))
x_tsvd = pd.DataFrame(tsvd.fit_transform(X))
x_gp = pd.DataFrame(gp.fit_transform(X))
x_sp = pd.DataFrame(sp.fit_transform(X))
x_pca.columns = ["pca_{}".format(i) for i in x_pca.columns]
x_ica.columns = ["ica_{}".format(i) for i in x_ica.columns]
x_tsvd.columns = ["tsvd_{}".format(i) for i in x_tsvd.columns]
x_gp.columns = ["gp_{}".format(i) for i in x_gp.columns]
x_sp.columns = ["sp_{}".format(i) for i in x_sp.columns]
X = pd.concat((X, x_pca), axis=1)
X = pd.concat((X, x_ica), axis=1)
X = pd.concat((X, x_tsvd), axis=1)
X = pd.concat((X, x_gp), axis=1)
X = pd.concat((X, x_sp), axis=1)
x_test_pca = pd.DataFrame(pca.transform(X_Test))
def em_rp(X, y, n, dataset):
print("---- EM + RP ----")
rp = GaussianRandomProjection(n_components=n)
X_new = rp.fit_transform(X)
em_silhouette = []
vmeasure_score = []
adjusted_rand = []
mutual_in_score = []
homogenity = []
completeness = []
list_k = list(range(2, 15))
start = time.time()
for i in list_k:
i_start = time.time()
print("CLUSTER :", i)
em = GaussianMixture(n_components=i,
n_init=10,
max_iter=500,
random_state=0).fit(X_new)
preds = em.predict(X_new)
silhouette = silhouette_score(X_new, preds)
em_silhouette.append(silhouette)
print("Silhouette score : {}".format(silhouette))
ad_rand = adjusted_rand_score(y, preds)
adjusted_rand.append(ad_rand)
print("Adjusted random score : {}".format(ad_rand))
mutual_info = mutual_info_score(y, preds)
mutual_in_score.append(mutual_info)
print("Adjusted mutual info score : {}".format(mutual_info))
h**o = homogeneity_score(y, preds)
homogenity.append(h**o)
print("Homogeneity score: {}".format(h**o))
comp = completeness_score(y, preds)
completeness.append(comp)
print("Completeness score : {}".format(comp))
v_measure = v_measure_score(y, preds)
vmeasure_score.append(v_measure)
print("V-measure score : {}".format(v_measure))
print("BIC : {}".format(em.bic(X_new)))
print("Log-likelihood score : {}".format(em.score(X_new)))
i_end = time.time()
print("Time for this iteration :", (i_end - i_start))
print("-" * 100)
end = time.time()
print("TOTAL TIME", (end - start))
plt.style.use('seaborn')
plt.title('EM Clustering on RP', fontsize=16, y=1.03)
plt.plot(list_k, em_silhouette, '-o', label='Silhouette score')
plt.plot(list_k, adjusted_rand, '-o', label='Adjusted Random score')
plt.plot(list_k, mutual_in_score, '-o', label='Mutual Info score')
plt.plot(list_k, homogenity, '-o', label='Homogenity score')
plt.plot(list_k, completeness, '-o', label='Completeness score')
plt.plot(list_k, vmeasure_score, '-o', label='V-measure score')
plt.xlabel('Number of clusters')
plt.ylabel('Metrics score')
plt.legend()
filename = 'EM_RP_' + dataset + '.png'
plt.savefig(filename)
plt.clf()
file_2.write("ICA_kurt2")
for i in range(0, len(kurt2)):
file_2.write(";")
file_2.write("%1.9f" % kurt2[i])
file_2.write("\n")
############################## RP ##############################
grp = GaussianRandomProjection(random_state=5)
error_rate_1 = np.zeros(np.shape(data1_X)[1])
for i in range(0, np.shape(data1_X)[1]):
grp.set_params(n_components=i + 1)
DT1 = tree.DecisionTreeClassifier(criterion='gini',
min_samples_leaf=0.005)
error_rate_1[i] = sum(
DT1.fit(grp.fit_transform(data1_X), data1_Y).predict(
grp.fit_transform(data1_X)) == data1_Y) * 1.0 / n1
print i + 1
i1 = np.argmax(error_rate_1) + 1
grp.set_params(n_components=i1)
recon1 = range(0,
2) #pairwiseDistCorr(grp.fit_transform(data1_X), data1_X)
error_rate_2 = np.zeros(np.shape(data2_X)[1])
for i in range(0, np.shape(data2_X)[1]):
grp.set_params(n_components=i + 1)
DT2 = tree.DecisionTreeClassifier(criterion='gini',
min_samples_leaf=0.005)
error_rate_2[i] = sum(
DT2.fit(grp.fit_transform(data2_X), data2_Y).predict(
grp.fit_transform(data2_X)) == data2_Y) * 1.0 / n2
import numpy as np from sklearn.random_projection import GaussianRandomProjection from sklearn import datasets, svm random_state = np.random.RandomState(0) X = random_state.randn(10, 10000) print(X.dtype) X = np.array(X, dtype='float32') print(X.dtype) transformer = GaussianRandomProjection() X_new = transformer.fit_transform(X) print(X_new.dtype) print(X.shape, X_new.shape) iris = datasets.load_iris() clf = svm.SVC(gamma='auto') clf.fit(iris.data, iris.target) print(clf.predict(iris.data[:3])) clf.fit(iris.data, iris.target_names[iris.target]) print(clf.predict(iris.data[:3]))
markersize=3)
plt.xticks(())
plt.yticks(())
plt.title('Labels mapped on the ICA-reduced 2D graph')
fig.savefig('figures/gender_em_ICA_rankings.png')
plt.close(fig)
# # ##########################################################################
print("RP - kmeans")
for n in nrange:
transformer = GaussianRandomProjection(n_components=n)
reduced_data = transformer.fit_transform(df_x)
print("N:", n)
kmeans = KMeans(init='k-means++', n_clusters=10, n_init=10)
kmeans.fit(reduced_data)
correct = 0
for i in range(10):
d = defaultdict(int)
for index, row in df.iterrows():
if row[label] == float(i):
lab = kmeans.predict([reduced_data[index]])
d[lab[0]] += 1
if d: correct += max(d.values())
def random(X, K):
grp = GaussianRandomProjection(n_components=K)
X_red = grp.fit_transform(X)
X_red = normalizer.fit_transform(X_red)
return X_red
alpha = 20.
epsilon1 = alpha / (noise_std * noise_std) + np.log(1 / delta) / (alpha - 1)
print(epsilon1)
gaussian_graph_noise = np.random.normal(0, noise_std,
citeseer_graph_copy2.shape)
citeseer_graph_copy2 += gaussian_graph_noise
graph_proj_2 = clf_proj.fit_transform(citeseer_graph_copy2)
##### baseline 4: gradient descent + gradient perturbation
##### the proposed method: random projection + add Gaussian noise to the graph adjacency matrix directly
#d = 10
d = 30
fraction = 8.
rand_proj = GaussianRandomProjection(n_components=d)
graph_randn_proj = rand_proj.fit_transform(citeseer_graph)
noise_std = fraction * np.sqrt(1 / d)
graph_randn_proj += np.random.normal(0.0,
noise_std,
size=graph_randn_proj.shape)
quad_base, r = qr(graph_randn_proj)
#graph_randn_svd = quad_base[:,:3*no_labels]
graph_randn_svd = graph_randn_proj
#graph_randn_svd = singlepass_evd(citeseer_graph,d)
#alpha = 2.5
#epsilon_renyi = np.max([2*(d/2*np.log((3+fraction)/(2+fraction)) + d/(2*(alpha-1))*np.log((3+fraction)/(alpha*(3+fraction) - (alpha-1)*(2+fraction)))),2*(d/2*np.log((2+fraction)/(3+fraction)) + d/(2*(alpha-1))*np.log((2+fraction)/(alpha*(2+fraction) - (alpha-1)*(3+fraction))))])
#epsilon1 = epsilon_renyi + np.log(1/delta)/(alpha-1)
#print(epsilon1)
'''
d = 10
X_ica = X_r
plt.figure()
colors = ["b", "g", "r", "c", "m", "y", "k"]
lw = 2
for color, i in zip(colors, [4, 8]):
plt.scatter(X_r[y == i, 0], X_r[y == i, 1], color=color, alpha=.8, lw=lw, label=i)
plt.legend(loc='best', shadow=False, scatterpoints=1)
plt.title('ICA of Wine Quality dataset')
#################################################
# Random Projection feature transformation
rca = GaussianRandomProjection(n_components=11, random_state=10)
X_r = rca.fit_transform(X)
X_rca = X_r
plt.figure()
colors = ["b", "g", "r", "c", "m", "y", "k"]
lw = 2
for color, i in zip(colors, [4, 8]):
plt.scatter(X_r[y == i, 0], X_r[y == i, 1], color=color, alpha=.8, lw=lw, label=i)
plt.legend(loc='best', shadow=False, scatterpoints=1)
plt.title('Random Projection of Wine Quality dataset')
#################################################
# Univariate feature selection (K best)
from sklearn.feature_selection import chi2
def get_rp(data, tdata, num_classes):
rp = GaussianRandomProjection(n_components=num_classes)
pdata = rp.fit_transform(data)
ptdata = rp.fit_transform(tdata)
return pdata, ptdata
def run_random_projection(data, num_components):
clf = GaussianRandomProjection(n_components=num_components,
random_state=seed)
return clf.fit_transform(data)
((maxAccuracy * 100), treesNo))
# # Random Projection
# In[6]:
from sklearn.ensemble import RandomForestClassifier
n_comp = 12
# GaussianRandomProjection
from sklearn.random_projection import GaussianRandomProjection
grp = GaussianRandomProjection(n_components=n_comp, eps=0.1, random_state=420)
grp_results_train = grp.fit_transform(df_train)
grp_results_test = grp.transform(testData)
treesNo = 141
model = RandomForestClassifier(n_estimators=treesNo)
model.fit(grp_results_train, y_train)
score = model.score(grp_results_test, y_test)
print("GaussianRandomProjection with random forest accuracy = %.2f%%" %
(score * 100))
# SparseRandomProjection
from sklearn.random_projection import SparseRandomProjection
srp = SparseRandomProjection(n_components=n_comp,
dense_output=True,
def nn2(xs, ys, xs_test, ys_test, n_components, clf_constructor):
ks = [0 for _ in range(10)]
cataccs = [0 for _ in range(10)]
ys = [to_categorical(ys[0]), to_categorical(ys[1])]
ys_test = [to_categorical(ys_test[0]), to_categorical(ys_test[1])]
for i in range(2):
shape = np.shape(xs[i])[1]
n_components[i] = shape
model = utils.create_adult_model(
shape, 2) if i == 0 else utils.create_wine_model(shape, 5)
model.fit(xs[i][:10000],
ys[i][:10000],
batch_size=50,
epochs=10,
verbose=False)
cataccs[i] = model.evaluate(xs_test[i], ys_test[i],
verbose=False)[1] * 100
for k in range(2, 11):
try:
clf = clf_constructor(n_clusters=k)
except:
clf = clf_constructor(n_components=k)
for i in range(2):
pca = PCA(n_components=n_components[2 + i])
transformed = pca.fit_transform(xs[i])
transformed_test = pca.transform(xs_test[i])
predict = to_categorical(clf.fit_predict(transformed[:10000]))
predict_test = to_categorical(clf.predict(
transformed_test[:10000]))
input_dims = [n_components[2 + i], k]
model = utils.create_mi_adult_model(
input_dims, 2) if i == 0 else utils.create_mi_wine_model(
input_dims, 5)
model.fit([transformed[:10000], predict],
ys[i][:10000],
batch_size=50,
epochs=10,
verbose=False)
catacc = model.evaluate([transformed_test, predict_test],
ys_test[i],
verbose=False)[1] * 100
if catacc > cataccs[2 + i]:
ks[2 + i] = k
cataccs[2 + i] = catacc
ica = FastICA(n_components=n_components[4 + i])
transformed = ica.fit_transform(xs[i])
transformed_test = ica.transform(xs_test[i])
predict = to_categorical(clf.fit_predict(transformed[:10000]))
predict_test = to_categorical(clf.predict(
transformed_test[:10000]))
input_dims = [n_components[4 + i], k]
model = utils.create_mi_adult_model(
input_dims, 2) if i == 0 else utils.create_mi_wine_model(
input_dims, 5)
model.fit([transformed[:10000], predict],
ys[i][:10000],
batch_size=50,
epochs=10,
verbose=False)
catacc = model.evaluate([transformed_test, predict_test],
ys_test[i],
verbose=False)[1] * 100
if catacc > cataccs[4 + i]:
ks[4 + i] = k
cataccs[4 + i] = catacc
if i == 1:
rp = GaussianRandomProjection(eps=0.95)
transformed = rp.fit_transform(xs[i])
transformed_test = rp.transform(xs_test[i])
predict = to_categorical(clf.fit_predict(transformed[:10000]))
predict_test = to_categorical(
clf.predict(transformed_test[:10000]))
input_dims = [np.shape(transformed)[1], k]
model = utils.create_mi_wine_model(input_dims, 5)
model.fit([transformed[:10000], predict],
ys[i][:10000],
batch_size=50,
epochs=10,
verbose=False)
catacc = model.evaluate([transformed_test, predict_test],
ys_test[i],
verbose=False)[1] * 100
if catacc > cataccs[6 + i]:
ks[6 + i] = k
cataccs[6 + i] = catacc
encoder, vae = utils.create_vae(
np.shape(xs[i])[1], n_components[8 + i])
vae.fit(xs[i], batch_size=50, epochs=10, verbose=False)
transformed = encoder.predict(xs[i], verbose=False)
transformed_test = encoder.predict(xs_test[i], verbose=False)
predict = to_categorical(clf.fit_predict(transformed[:10000]))
predict_test = to_categorical(clf.predict(
transformed_test[:10000]))
input_dims = [n_components[8 + i], k]
model = utils.create_mi_adult_model(
input_dims, 2) if i == 0 else utils.create_mi_wine_model(
input_dims, 5)
model.fit([transformed[:10000], predict],
ys[i][:10000],
batch_size=50,
epochs=10,
verbose=False)
catacc = model.evaluate([transformed_test, predict_test],
ys_test[i],
verbose=False)[1] * 100
if catacc > cataccs[8 + i]:
ks[8 + i] = k
cataccs[8 + i] = catacc
plot.style.use('seaborn-darkgrid')
plot.title(f'Influence of feature transformation on the NN accuracy')
color = []
for _ in range(5):
color.append('tab:blue')
color.append('tab:orange')
x = []
count = 1
for _ in range(5):
x.append(count)
count += 0.5
x.append(count)
count += 1
plot.bar(x, cataccs, color=color, width=0.75)
x = []
count = 1.25
for _ in range(5):
x.append(count)
count += 1.5
plot.xticks(x, ['None', 'PCA', 'ICA', 'RP', 'VAE'])
plot.xlabel('Feature transformation method')
plot.ylabel('Categorical accuracy (%)')
plot.show()
def nn_benchmark(xs, ys, n_components):
ys = [to_categorical(ys[0]), to_categorical(ys[1])]
none_samples = [[], []]
pca_samples = [[], []]
ica_samples = [[], []]
rp_samples = [[], []]
vae_samples = [[], []]
trials = 7
for _ in range(trials):
for i in range(2):
shape = np.shape(xs[i])[1]
n_components[i] = shape
model = utils.create_adult_model(
shape, 2) if i == 0 else utils.create_wine_model(shape, 5)
start = time.time()
model.fit(xs[i][:10000],
ys[i][:10000],
batch_size=50,
epochs=10,
verbose=False)
none_samples[i].append(time.time() - start)
for i in range(2):
dim = n_components[2 + i]
pca = PCA(n_components=dim)
transformed = pca.fit_transform(xs[i])
model = utils.create_adult_model(
dim, 2) if i == 0 else utils.create_wine_model(dim, 5)
start = time.time()
model.fit(transformed[:10000],
ys[i][:10000],
batch_size=50,
epochs=10,
verbose=False)
pca_samples[i].append(time.time() - start)
dim = n_components[4 + i]
ica = FastICA(n_components=dim)
transformed = ica.fit_transform(xs[i])
model = utils.create_adult_model(
dim, 2) if i == 0 else utils.create_wine_model(dim, 5)
start = time.time()
model.fit(transformed[:10000],
ys[i][:10000],
batch_size=50,
epochs=10,
verbose=False)
ica_samples[i].append(time.time() - start)
if i == 1:
rp = GaussianRandomProjection(eps=0.95)
transformed = rp.fit_transform(xs[i])
dim = np.shape(transformed)[1]
model = utils.create_wine_model(dim, 5)
start = time.time()
model.fit(transformed[:10000],
ys[i][:10000],
batch_size=50,
epochs=10,
verbose=False)
rp_samples[i].append(time.time() - start)
dim = n_components[8 + i]
encoder, vae = utils.create_vae(np.shape(xs[i])[1], dim)
vae.fit(xs[i], batch_size=50, epochs=10, verbose=False)
transformed = encoder.predict(xs[i], verbose=False)
model = utils.create_adult_model(
dim, 2) if i == 0 else utils.create_wine_model(dim, 5)
start = time.time()
model.fit(transformed[:10000],
ys[i][:10000],
batch_size=50,
epochs=10,
verbose=False)
vae_samples[i].append(time.time() - start)
times = [
np.mean(none_samples[0]),
np.mean(none_samples[1]),
np.mean(pca_samples[0]),
np.mean(pca_samples[1]),
np.mean(ica_samples[0]),
np.mean(ica_samples[1]), 0,
np.mean(rp_samples[1]),
np.mean(vae_samples[0]),
np.mean(vae_samples[1])
]
times_err = [
np.std(none_samples[0]) / 2,
np.std(none_samples[1]) / 2,
np.std(pca_samples[0]) / 2,
np.std(pca_samples[1]) / 2,
np.std(ica_samples[0]) / 2,
np.std(ica_samples[1]) / 2, 0,
np.std(rp_samples[1]) / 2,
np.std(vae_samples[0]) / 2,
np.std(vae_samples[1]) / 2
]
plot.style.use('seaborn-darkgrid')
plot.title(f'Influence of feature transformation on the NN training time')
color = []
for _ in range(5):
color.append('tab:blue')
color.append('tab:orange')
x = []
count = 1
for _ in range(5):
x.append(count)
count += 0.5
x.append(count)
count += 1
plot.bar(x, times, color=color, width=0.75, yerr=times_err)
x = []
count = 1.25
for _ in range(5):
x.append(count)
count += 1.5
plot.xticks(x, ['None', 'PCA', 'ICA', 'RP', 'VAE'])
plot.xlabel('Feature transformation method')
plot.ylabel('Average training time (s)')
plot.show()
def gen_features(train, val, test):
train = pd.DataFrame(train)
val = pd.DataFrame(val)
test = pd.DataFrame(test)
# cat_cols = ['city', 'bd', 'gender', 'registered_via', 'registration_init_year',
# 'registration_init_month', 'registration_init_date', 'payment_method_id', 'payment_plan_days',
# 'plan_list_price', 'actual_amount_paid', 'is_auto_renew', 'is_cancel',
# 'transaction_date_year', 'transaction_date_month', 'transaction_date_date',
# 'membership_expire_date_year',
# 'membership_expire_date_month', 'membership_expire_date_date', 'membership_transaction_gap',
# 'cancel_times',
# 'auto_renew_count', 'plan_net_worth', 'user_date_year', 'user_date_month',
# 'user_date_date']
# con_cols = [x for x in train.columns if x not in cat_cols and x not in ['msno', 'is_churn']]
# train[cat_cols] = train[cat_cols].astype('object')
# test[cat_cols] = test[cat_cols].astype('object')
# val[cat_cols] = val[cat_cols].astype('object')
#
# for col in cat_cols:
# train[col].fillna(value=train[col].mode()[0], inplace=True)
# test[col].fillna(value=test[col].mode()[0], inplace=True)
# val[col].fillna(value=val[col].mode()[0], inplace=True)
# for col in con_cols:
# train[col].fillna(value=train[col].mean(), inplace=True)
# test[col].fillna(value=test[col].mean(), inplace=True)
# val[col].fillna(value=val[col].mean(), inplace=True)
#
# for c in train.columns:
# if train[c].dtype == 'object':
# lbl = LabelEncoder()
# lbl.fit(list(train[c].values) + list(test[c].values))
# train[c] = lbl.transform(list(train[c].values))
# test[c] = lbl.transform(list(test[c].values))
n_comp = 15
drop_list = []
test_drop_list = []
print(train.drop(drop_list, axis=1).shape, test.drop(test_drop_list, axis=1).shape)
print('tSVD', datetime.now() - start)
# tSVD
tsvd = TruncatedSVD(n_components=n_comp)
tsvd_results_train = tsvd.fit_transform(train.drop(drop_list, axis=1))
tsvd_results_val= tsvd.transform(val.drop(test_drop_list, axis=1))
tsvd_results_test = tsvd.transform(test.drop(test_drop_list, axis=1))
print('PCA', datetime.now() - start)
# PCA
pca = PCA(n_components=n_comp)
pca2_results_train = pca.fit_transform(train.drop(drop_list, axis=1))
pca2_results_val = pca.transform(val.drop(test_drop_list, axis=1))
pca2_results_test = pca.transform(test.drop(test_drop_list, axis=1))
print('ICA', datetime.now() - start)
# ICA
ica = FastICA(n_components=n_comp, max_iter=10000)
ica2_results_train = ica.fit_transform(train.drop(drop_list, axis=1))
ica2_results_val = ica.transform(val.drop(test_drop_list, axis=1))
ica2_results_test = ica.transform(test.drop(test_drop_list, axis=1))
print('GRP', datetime.now() - start)
# GRP
grp = GaussianRandomProjection(n_components=n_comp, eps=0.1)
grp_results_train = grp.fit_transform(train.drop(drop_list, axis=1))
grp_results_val = grp.transform(val.drop(test_drop_list, axis=1))
grp_results_test = grp.transform(test.drop(test_drop_list, axis=1))
print('SRP', datetime.now() - start)
# SRP
srp = SparseRandomProjection(n_components=n_comp, dense_output=True)
srp_results_train = srp.fit_transform(train.drop(drop_list, axis=1))
srp_results_val = srp.transform(val.drop(test_drop_list, axis=1))
srp_results_test = srp.transform(test.drop(test_drop_list, axis=1))
# MCA
# res_mca = MCA(train, ncp=n_comp, graph = FALSE)
# save columns list before adding the decomposition components
usable_columns = list(set(train.columns) - set(drop_list))
# Append decomposition components to datasets
for i in range(1, n_comp + 1):
train['pca_' + str(i)] = pca2_results_train[:, i - 1]
val['pca_' + str(i)] = pca2_results_val[:, i - 1]
test['pca_' + str(i)] = pca2_results_test[:, i - 1]
train['ica_' + str(i)] = ica2_results_train[:, i - 1]
val['ica_' + str(i)] = ica2_results_val[:, i - 1]
test['ica_' + str(i)] = ica2_results_test[:, i - 1]
train['tsvd_' + str(i)] = tsvd_results_train[:, i - 1]
val['tsvd_' + str(i)] = tsvd_results_val[:, i - 1]
test['tsvd_' + str(i)] = tsvd_results_test[:, i - 1]
train['grp_' + str(i)] = grp_results_train[:, i - 1]
val['grp_' + str(i)] = grp_results_val[:, i - 1]
test['grp_' + str(i)] = grp_results_test[:, i - 1]
train['srp_' + str(i)] = srp_results_train[:, i - 1]
val['srp_' + str(i)] = srp_results_val[:, i - 1]
test['srp_' + str(i)] = srp_results_test[:, i - 1]
return train, val, test
import numpy as np
from sklearn.random_projection import GaussianRandomProjection
import pandas as pd
from sklearn import metrics
balance_data = pd.read_csv('seeds.csv', sep=',', header=None)
X = balance_data.values[:, 0:6]
Y = balance_data.values[:, 7]
for i in range(1, 7):
gaussian = GaussianRandomProjection(n_components=6)
new_X = gaussian.fit_transform(X)
np.savetxt('GAUSSIAN' + str(i) + '.csv', new_X)
def gaussianRP(data, orig_dimension, new_dimension):
rp = GaussianRandomProjection(n_components=new_dimension)
return rp.fit_transform(data)
# PCA
pca = PCA(n_components=n_comp) # random_state=400)
pca2_results_train = pca.fit_transform(train.drop(["y"], axis=1))
pca2_results_test = pca.transform(test)
# ICA
ica = FastICA(n_components=n_comp) #, random_state=400)
ica2_results_train = ica.fit_transform(train.drop(["y"], axis=1))
ica2_results_test = ica.transform(test)
# GRP
grp = GaussianRandomProjection(n_components=n_comp,
eps=0.007,
random_state=400)
grp_results_train = grp.fit_transform(train.drop(["y"], axis=1))
grp_results_test = grp.transform(test)
# SRP
srp = SparseRandomProjection(n_components=n_comp,
dense_output=True,
random_state=400)
srp_results_train = srp.fit_transform(train.drop(["y"], axis=1))
srp_results_test = srp.transform(test)
# Append decomposition components to datasets
for i in range(1, n_comp + 1):
train['pca_' + str(i)] = pca2_results_train[:, i - 1]
test['pca_' + str(i)] = pca2_results_test[:, i - 1]
train['ica_' + str(i)] = ica2_results_train[:, i - 1]
s = node.label() + ' ' + node.parent().label() + ' ' + node.parent(
).parent().label()
col.append(mapo[s])
fm = sparse.csr_matrix(([1] * len(col), ([0] * len(col), col)),
shape=(1, len(mapo)))
O[node.label()].append(fm)
for tree in tqdm(config.train, desc='NAACL collect'):
for node in tree.postorder():
collect(node)
rp = GaussianRandomProjection(n_components=500, random_state=42)
newI, newO = dict(), dict()
for k, v in tqdm(I.items(), desc='PCA/RP inside'):
newI[config.nonterminal_map[k]] = rp.fit_transform(sparse.vstack(v))
for k, v in tqdm(O.items(), desc='PCA/RP outside'):
newO[config.nonterminal_map[k]] = rp.fit_transform(sparse.vstack(v))
config.I = newI
config.O = newO
del M, counti, counto, mapi, mapo, I, O
transform_trees(config.train)
cnt = Counter()
for tree in config.train:
for node in tree.postorder():
Inode[node] = config.I[node.label()][cnt[node.label()]]
Onode[node] = config.O[node.label()][cnt[node.label()]]
cnt[node.label()] += 1
def gen_feature(train, test):
train = pd.DataFrame(train)
test = pd.DataFrame(test)
n_comp = 15
drop_list = []
test_drop_list = []
print(train.drop(drop_list, axis=1).shape, test.drop(test_drop_list, axis=1).shape)
print('tSVD', datetime.now() - start)
# tSVD
tsvd = TruncatedSVD(n_components=n_comp)
tsvd_results_train = tsvd.fit_transform(train.drop(drop_list, axis=1))
tsvd_results_test = tsvd.transform(test.drop(test_drop_list, axis=1))
print('PCA', datetime.now() - start)
# PCA
pca = PCA(n_components=n_comp)
pca2_results_train = pca.fit_transform(train.drop(drop_list, axis=1))
pca2_results_test = pca.transform(test.drop(test_drop_list, axis=1))
print('ICA', datetime.now() - start)
# ICA
ica = FastICA(n_components=n_comp, max_iter=10000)
ica2_results_train = ica.fit_transform(train.drop(drop_list, axis=1))
ica2_results_test = ica.transform(test.drop(test_drop_list, axis=1))
print('GRP', datetime.now() - start)
# GRP
grp = GaussianRandomProjection(n_components=n_comp, eps=0.1)
grp_results_train = grp.fit_transform(train.drop(drop_list, axis=1))
grp_results_test = grp.transform(test.drop(test_drop_list, axis=1))
print('SRP', datetime.now() - start)
# SRP
srp = SparseRandomProjection(n_components=n_comp, dense_output=True)
srp_results_train = srp.fit_transform(train.drop(drop_list, axis=1))
srp_results_test = srp.transform(test.drop(test_drop_list, axis=1))
# MCA
# res_mca = MCA(train, ncp=n_comp, graph = FALSE)
# save columns list before adding the decomposition components
usable_columns = list(set(train.columns) - set(drop_list))
# Append decomposition components to datasets
for i in range(1, n_comp + 1):
train['pca_' + str(i)] = pca2_results_train[:, i - 1]
test['pca_' + str(i)] = pca2_results_test[:, i - 1]
train['ica_' + str(i)] = ica2_results_train[:, i - 1]
test['ica_' + str(i)] = ica2_results_test[:, i - 1]
train['tsvd_' + str(i)] = tsvd_results_train[:, i - 1]
test['tsvd_' + str(i)] = tsvd_results_test[:, i - 1]
train['grp_' + str(i)] = grp_results_train[:, i - 1]
test['grp_' + str(i)] = grp_results_test[:, i - 1]
train['srp_' + str(i)] = srp_results_train[:, i - 1]
test['srp_' + str(i)] = srp_results_test[:, i - 1]
return train, test
def perform_feature_engineering(train, test, config):
for c in train.columns:
if (len(train[c].value_counts()) == 2):
if (train[c].mean() < config['SparseThreshold']):
del train[c]
del test[c]
col = list(test.columns)
if config['ID'] != True:
col.remove('ID')
# tSVD
if (config['tSVD'] == True):
tsvd = TruncatedSVD(n_components=config['n_comp'])
tsvd_results_train = tsvd.fit_transform(train[col])
tsvd_results_test = tsvd.transform(test[col])
for i in range(1, config['n_comp'] + 1):
train['tsvd_' + str(i)] = tsvd_results_train[:, i - 1]
test['tsvd_' + str(i)] = tsvd_results_test[:, i - 1]
# PCA
if (config['PCA'] == True):
pca = PCA(n_components=config['n_comp'])
pca2_results_train = pca.fit_transform(train[col])
pca2_results_test = pca.transform(test[col])
for i in range(1, config['n_comp'] + 1):
train['pca_' + str(i)] = pca2_results_train[:, i - 1]
test['pca_' + str(i)] = pca2_results_test[:, i - 1]
# ICA
if (config['ICA'] == True):
ica = FastICA(n_components=config['n_comp'])
ica2_results_train = ica.fit_transform(train[col])
ica2_results_test = ica.transform(test[col])
for i in range(1, config['n_comp'] + 1):
train['ica_' + str(i)] = ica2_results_train[:, i - 1]
test['ica_' + str(i)] = ica2_results_test[:, i - 1]
# GRP
if (config['GRP'] == True):
grp = GaussianRandomProjection(n_components=config['n_comp'], eps=0.1)
grp_results_train = grp.fit_transform(train[col])
grp_results_test = grp.transform(test[col])
for i in range(1, config['n_comp'] + 1):
train['grp_' + str(i)] = grp_results_train[:, i - 1]
test['grp_' + str(i)] = grp_results_test[:, i - 1]
# SRP
if (config['SRP'] == True):
srp = SparseRandomProjection(n_components=config['n_comp'],
dense_output=True,
random_state=420)
srp_results_train = srp.fit_transform(train[col])
srp_results_test = srp.transform(test[col])
for i in range(1, config['n_comp'] + 1):
train['srp_' + str(i)] = srp_results_train[:, i - 1]
test['srp_' + str(i)] = srp_results_test[:, i - 1]
if config['magic'] == True:
magic_mat = train[['ID', 'X0', 'y']]
magic_mat = magic_mat.groupby(['X0'])['y'].mean()
magic_mat = pd.DataFrame({
'X0': magic_mat.index,
'magic': list(magic_mat)
})
mean_magic = magic_mat['magic'].mean()
train = train.merge(magic_mat, on='X0', how='left')
test = test.merge(magic_mat, on='X0', how='left')
test['magic'] = test['magic'].fillna(mean_magic)
return train, test
import sys from sklearn.random_projection import SparseRandomProjection, GaussianRandomProjection import numpy as np in_dim = int(sys.argv[1]) out_dim = int(sys.argv[2]) out_file = sys.argv[3] # dummy data X = np.zeros((2, in_dim), dtype=float) g = GaussianRandomProjection(out_dim) g.fit_transform(X) # random mat, transpose() from (out_d, int_d) to (in_d, out_d) random_mat = g.components_.transpose() random_mat.dump(out_file)
def retdata():
# load data into dataframe
window_size = 7
df = pd.read_csv('ds.csv')
df = df.drop('Unnamed: 0', 1)
# add data part to dataframe
df['datepart'] = pd.DatetimeIndex(pd.to_datetime(df['time'])).date
# split dataframe up into the variable where we want the sum and where we want the mean
means = ['mood', 'circumplex.valence', 'circumplex.arousal']
df2 = df[df['variable'].isin(means)]
df = df[~df['variable'].isin(means)]
# create 2 different dataframes with different aggfunc and merge them
pt1 = pd.pivot_table(df,
values='value',
index=['id', 'datepart'],
aggfunc='sum',
columns='variable').reset_index() # 1973 rows
pt2 = pd.pivot_table(df2,
values='value',
index=['id', 'datepart'],
aggfunc='mean',
columns='variable').reset_index() # 1973 rows
pt = pd.merge(pt1,
pt2,
how='left',
left_on=['id', 'datepart'],
right_on=['id', 'datepart'])
# remove rows with no mood, valence, and arousal value--1268 rows
ptcl1 = pt[np.isfinite(pt.mood)] # 1268 rows
ptcl2 = ptcl1[np.isfinite(ptcl1['circumplex.valence'])] # 1266 rows
ptcl3 = ptcl2[np.isfinite(ptcl2['circumplex.arousal'])] # 1266 rows
ptcl3['weekday'] = pd.to_datetime(ptcl3['datepart']).dt.weekday_name
le = sklearn.preprocessing.LabelEncoder()
ptcl3['weekday'] = le.fit_transform(ptcl3['weekday'])
ptcl3 = ptcl3.sort_values(by=['id', 'datepart'])
new_feature_list = ['id', 'datepart', 'weekday', 'mood_']
for feature_name in ptcl3.columns:
if feature_name not in ['id', 'datepart', 'sms', 'call', 'weekday']:
# new_feature_list.append((feature_name + 'PrevDay'))
new_feature_list.append((feature_name + 'MeanPrevDays'))
new_feature_list.append((feature_name + 'Gradient'))
new_feature_list.append((feature_name + 'Log'))
elif feature_name not in ['id', 'datepart', 'weekday']:
# new_feature_list.append((feature_name + 'PrevDay'))
new_feature_list.append((feature_name + 'SumPrevDays'))
new_feature_list.append((feature_name + 'Gradient'))
the_df = pd.DataFrame()
# the_df.columns = the_df.loc[0,:]
# the_df = the_df.drop(0)
# the_df = the_df.fillna(0)
ptcl3 = ptcl3.fillna(0)
# add previous day's mood
id_set = list(OrderedDict.fromkeys(ptcl3['id']))
for person in id_set:
persondf = ptcl3[ptcl3['id'] == person]
for feature_name in persondf.columns:
if feature_name == 'mood':
persondf['mood_'] = persondf[
'mood'] # all original feature names will be removed, hence the new name
if feature_name not in [
'id', 'datepart', 'call', 'sms', 'weekday'
]:
# persondf[str(feature_name)+'PrevDay'] = persondf[feature_name].shift(1)
# persondf[str(feature_name)+'PrevDay'] = persondf[str(feature_name)+'PrevDay'].fillna(0)
persondf[str(feature_name) + 'MeanPrevDays'] = persondf[str(
feature_name)].rolling(window_size).mean()
persondf[str(feature_name) + 'Gradient'] = np.gradient(
persondf[str(feature_name)].rolling(window_size).mean())
persondf[str(feature_name) + 'Log'] = np.log(
persondf[str(feature_name)])
persondf[str(feature_name) + 'Log'][np.isneginf(
persondf[str(feature_name) + 'Log'])] = 0
persondf = persondf.drop(feature_name, 1)
elif feature_name not in [
'id', 'datepart', 'weekday'
]: # looking at the sum instead of the mean of the previous days for sms and call
# persondf[str(feature_name)+'PrevDay'] = persondf[feature_name].shift(1)
# persondf[str(feature_name)+'PrevDay'] = persondf[str(feature_name)+'PrevDay'].fillna(0)
persondf[str(feature_name) + 'SumPrevDays'] = persondf[str(
feature_name)].rolling(window_size).sum()
persondf[str(feature_name) + 'Gradient'] = np.gradient(
persondf[str(feature_name)].rolling(window_size).mean())
persondf = persondf.drop(feature_name, 1)
persondf = persondf[persondf['activityGradient'].notnull(
)] # arbritrary feature to remove the first 6 days
persondf = persondf.fillna(0)
pca = PCA(n_components=5)
tsvd = TruncatedSVD(n_components=5)
gp = GaussianRandomProjection(n_components=5)
sp = SparseRandomProjection(n_components=5, dense_output=True)
x_pca = pd.DataFrame(
pca.fit_transform(
persondf.drop(['mood_', 'id', 'datepart', 'weekday'], axis=1)))
x_tsvd = pd.DataFrame(
tsvd.fit_transform(
persondf.drop(['mood_', 'id', 'datepart', 'weekday'], axis=1)))
x_gp = pd.DataFrame(
gp.fit_transform(
persondf.drop(['mood_', 'id', 'datepart', 'weekday'], axis=1)))
x_sp = pd.DataFrame(
sp.fit_transform(
persondf.drop(['mood_', 'id', 'datepart', 'weekday'], axis=1)))
x_pca.columns = ["pca_{}".format(i) for i in x_pca.columns]
x_tsvd.columns = ["tsvd_{}".format(i) for i in x_tsvd.columns]
x_gp.columns = ["gp_{}".format(i) for i in x_gp.columns]
x_sp.columns = ["sp_{}".format(i) for i in x_sp.columns]
x_pca = x_pca.reset_index()
x_tsvd = x_tsvd.reset_index()
x_gp = x_gp.reset_index()
x_sp = x_sp.reset_index()
persondf = persondf.reset_index()
persondf = pd.concat((persondf, x_pca), axis=1)
persondf = pd.concat((persondf, x_tsvd), axis=1)
persondf = pd.concat((persondf, x_gp), axis=1)
persondf = pd.concat((persondf, x_sp), axis=1)
the_df = the_df.append(persondf)
the_df = the_df.fillna(0)
# replace null with 0 and reindex
cleandata = the_df.fillna(0)
cleandata.index = range(len(cleandata.values))
# clean up
del ptcl1, ptcl2, ptcl3, pt, pt1, pt2, df, df2, means
# get normalized datasets
cleandata = cleandata.drop(cleandata.columns[[60, 66, 72, 78]], axis=1)
normalizedwholeds = normalize(cleandata)
normalizedperuser = normalizeperuser(cleandata)
return normalizedwholeds, normalizedperuser, cleandata
n_outputs = 500
X = 3 + 5 * random_state.normal(size=(n_samples, n_outputs))
# Let's compute the sum of the variance in the orignal output space
var_origin = np.var(X, axis=0).sum()
# Let's compute the variance on a random subspace
all_n_components = np.array([1, 50, 100, 200, 400, 500])
n_repetitions = 10
distortion = np.empty((len(all_n_components), n_repetitions))
for i, n_components in enumerate(all_n_components):
for j in range(n_repetitions):
transformer = GaussianRandomProjection(n_components=n_components,
random_state=random_state)
X_subspace = transformer.fit_transform(X)
distortion[i, j] = np.var(X_subspace, axis=0).sum() / var_origin
# Let's plot the distortion as a function of the compression ratio
distortion_mean = distortion.mean(axis=1)
distortion_std = distortion.std(axis=1)
plt.figure()
plt.plot(all_n_components / n_outputs, distortion_mean, "o-", color="g")
plt.plot(all_n_components / n_outputs, np.ones_like(distortion_mean),
"--", color="r")
plt.fill_between(all_n_components / n_outputs,
distortion_mean - distortion_std,
distortion_mean + distortion_std, alpha=0.25, color="g")
plt.xlabel("n_components / n_outputs")
plt.ylabel('Distortion of the variance on a Gaussian subspace')
def ft_red_select(x,
y,
choice,
no_normalize,
dis_kept_features,
num_features=30):
"""
:param 'full_file_name', which is the full path name to the file in question that we wish to do dimensionality
reduction on
:return: the new reduced 'x' and 'y' components of the file to be later written to a new file
"""
#Normalize the data
if not no_normalize:
x = normalize(x)
#Given the argument choice of feature selection/reduction, creates the relevant object, fits the 'x' data to it,
#and reduces/transforms it to a lower dimensionality
new_x = []
print("Original 'x' shape:", np.shape(x))
if choice == "pca":
pca = PCA(n_components=num_features)
new_x = pca.fit_transform(x)
print("Explained variance = " +
str(round(sum(pca.explained_variance_) * 100, 2)) + "%")
elif choice == "grp":
grp = GaussianRandomProjection(n_components=num_features)
new_x = grp.fit_transform(x)
elif choice == "agglom":
agg = FeatureAgglomeration(n_clusters=num_features)
new_x = agg.fit_transform(x)
elif choice == "thresh":
#Below threshold gives ~26 components upon application
vt = VarianceThreshold(threshold=0.00015)
new_x = vt.fit_transform(x)
print("Explained variance = " +
str(round(sum(vt.variances_) * 100, 2)) + "%")
kept_features = list(vt.get_support(indices=True))
if dis_kept_features:
print("Kept features: ")
for i in kept_features:
print(col_names[i])
elif choice == "rf":
y_labels = [1 if s == "D" else 0 for s in y[:, 1]]
clf = RandomForestClassifier(n_estimators=10000,
random_state=0,
n_jobs=-1)
print("Fitting RF model....")
clf.fit(x, y_labels)
sfm = SelectFromModel(clf,
threshold=-np.inf,
max_features=num_features)
print("Selecting best features from model...")
sfm.fit(x, y_labels)
kept_features = list(sfm.get_support(indices=True))
if dis_kept_features:
print("Kept features: ")
for i in kept_features:
print(col_names[i])
new_x = x[:, kept_features]
print("Reduced 'x' shape:", np.shape(new_x))
return new_x, y
# tSVD
tsvd = TruncatedSVD(n_components=n_comp, random_state=420)
tsvd_results = tsvd.fit_transform(train_test_p)
# PCA
pca = PCA(n_components=n_comp, random_state=420)
pca_results = pca.fit_transform(train_test_p)
# ICA
ica = FastICA(n_components=n_comp, random_state=420)
ica_results = ica.fit_transform(train_test_p)
# GRP
grp = GaussianRandomProjection(n_components=n_comp, eps=0.1, random_state=420)
grp_results = grp.fit_transform(train_test_p)
# SRP
srp = SparseRandomProjection(n_components=n_comp,
dense_output=True,
random_state=420)
srp_results = srp.fit_transform(train_test_p)
# save columns list before adding the decomposition components
usable_columns = train_test_p.columns
print train_test_p.shape
print tsvd_results.shape, type(tsvd_results)
# # Append decomposition components to datasets
for i in range(1, n_comp + 1):
plt.close()
Cancer_X, Cancer_y = ReadData.ReadCancerData()
Cancer_X = Cancer_X.iloc[:, :-1].values
Cancer_X = preprocessing.scale(Cancer_X)
Cancer_X_train, Cancer_X_test, Cancer_y_train, Cancer_y_test = train_test_split(Cancer_X, Cancer_y,random_state= 7641, test_size=0.2)
dims = range(2,30)
aa = defaultdict(dict)
for i,dim in product(range(10),dims):
rp = GaussianRandomProjection(random_state=i, n_components=dim)
aa[dim][i] = DistCorr(rp.fit_transform(Cancer_X_train), Cancer_X_train)
aa = pd.DataFrame(aa).T
mean_recon = aa.mean(axis=1).tolist()
fig, ax1 = plt.subplots()
ax1.plot(dims,mean_recon)
ax1.set_xlabel('Components')
ax1.set_ylabel('Pair Wise DisCorr')
plt.grid(linestyle='-', linewidth=1, axis = "x")
plt.title("Random Components Pair Wise DisCorr Cancer")
plt.savefig('Cancer_RP.png')
plt.show()
plt.close()
Cancer_RP = GaussianRandomProjection(n_components=13,random_state=7641).fit_transform(Cancer_X)
X_agg.head() # In[14]: from sklearn.decomposition import FactorAnalysis fa = FactorAnalysis(n_components=50, random_state=42) X_fa = fa.fit_transform(X) # In[15]: from sklearn.random_projection import GaussianRandomProjection grp = GaussianRandomProjection(n_components=50, random_state=42, eps=0.1) X_grp = grp.fit_transform(X) # In[16]: # from sklearn.decomposition import PCA # pca = PCA(n_components=100, random_state=42) # X_pca = pca.fit_transform(X) # In[17]: # from sklearn.decomposition import FastICA # ica = FastICA(n_components=15, random_state=42) # X_ica = ica.fit_transform(X)
def get_dc_feature(df_train,
df_test,
n_comp=12,
id_column=None,
label_column=None):
"""
构造分解特征
"""
train = df_train.copy()
test = df_test.copy()
if id_column:
train_id = train[id_column]
test_id = test[id_column]
train = drop_columns(train, [id_column])
test = drop_columns(test, [id_column])
if label_column:
train_y = train[label_column]
train = drop_columns(train, [label_column])
# tSVD
tsvd = TruncatedSVD(n_components=n_comp, random_state=420)
tsvd_results_train = tsvd.fit_transform(train)
tsvd_results_test = tsvd.transform(test)
# PCA
pca = PCA(n_components=n_comp, random_state=420)
pca2_results_train = pca.fit_transform(train)
pca2_results_test = pca.transform(test)
# ICA
ica = FastICA(n_components=n_comp, random_state=420)
ica2_results_train = ica.fit_transform(train)
ica2_results_test = ica.transform(test)
# GRP
grp = GaussianRandomProjection(n_components=n_comp,
eps=0.1,
random_state=420)
grp_results_train = grp.fit_transform(train)
grp_results_test = grp.transform(test)
# SRP
srp = SparseRandomProjection(n_components=n_comp,
dense_output=True,
random_state=420)
srp_results_train = srp.fit_transform(train)
srp_results_test = srp.transform(test)
# Append decomposition components to datasets
for i in range(1, n_comp + 1):
train['pca_' + str(i)] = pca2_results_train[:, i - 1]
test['pca_' + str(i)] = pca2_results_test[:, i - 1]
train['ica_' + str(i)] = ica2_results_train[:, i - 1]
test['ica_' + str(i)] = ica2_results_test[:, i - 1]
train['tsvd_' + str(i)] = tsvd_results_train[:, i - 1]
test['tsvd_' + str(i)] = tsvd_results_test[:, i - 1]
train['grp_' + str(i)] = grp_results_train[:, i - 1]
test['grp_' + str(i)] = grp_results_test[:, i - 1]
train['srp_' + str(i)] = srp_results_train[:, i - 1]
test['srp_' + str(i)] = srp_results_test[:, i - 1]
if id_column:
train[id_column] = train_id
test[id_column] = test_id
if label_column:
train[label_column] = train_y
return train, test
# In[155]: n_random_comp = 7 # In[156]: random_proj = GaussianRandomProjection(n_components=n_random_comp) # In[157]: X_random_proj = random_proj.fit_transform(X_scaled) # In[158]: df_random_proj=pd.DataFrame(data=X_random_proj,columns=['Random_projection'+str(i) for i in range(1,n_random_comp+1)]) # ### Running k-means on random projections # In[159]: km_sse= [] km_silhouette = []
tsvd_results_train = tsvd.fit_transform(train_df)
tsvd_results_test = tsvd.transform(test_df)
# PCA
pca = PCA(n_components=n_comp, random_state=420)
pca2_results_train = pca.fit_transform(train_df)
pca2_results_test = pca.transform(test_df)
# ICA
ica = FastICA(n_components=n_comp, random_state=420)
ica2_results_train = ica.fit_transform(train_df)
ica2_results_test = ica.transform(test_df)
# GRP
grp = GaussianRandomProjection(n_components=n_comp, eps=0.1, random_state=420)
grp_results_train = grp.fit_transform(train_df)
grp_results_test = grp.transform(test_df)
# SRP
srp = SparseRandomProjection(n_components=n_comp,
dense_output=True,
random_state=420)
srp_results_train = srp.fit_transform(train_df)
srp_results_test = srp.transform(test_df)
############
# write output
#############
print("Writing output...")
outputTrain = pd.DataFrame()
outputTest = pd.DataFrame()
# power_t : double, optional, default 0.5
# max_iter : int, optional, default 200
# shuffle : bool, optional, default True
# random_state : int, RandomState instance or None, optional, default None
# tol : float, optional, default 1e-4
# early_stopping : bool, default False
# validation_fraction : float, optional, default 0.1; only used if early_stopping True
clf = GaussianRandomProjection(
random_state=0,
n_components=20,
)
print(clf)
X_train = clf.fit_transform(X_train)
X_test = clf.fit_transform(X_test)
train_results = []
test_results = []
clf = MLPClassifier(
random_state=0,
hidden_layer_sizes=(100),
activation='relu',
solver='adam',
batch_size=100,
early_stopping=True,
beta_1=.001,
beta_2=.999,
)
tsvd_results_train = tsvd.fit_transform(train.drop(["y"], axis=1))
tsvd_results_test = tsvd.transform(test)
# PCA
pca = PCA(n_components=n_comp, random_state=420)
pca2_results_train = pca.fit_transform(train.drop(["y"], axis=1))
pca2_results_test = pca.transform(test)
# ICA
ica = FastICA(n_components=n_comp, random_state=420)
ica2_results_train = ica.fit_transform(train.drop(["y"], axis=1))
ica2_results_test = ica.transform(test)
# GRP
grp = GaussianRandomProjection(n_components=n_comp, eps=0.1, random_state=420)
grp_results_train = grp.fit_transform(train.drop(["y"], axis=1))
grp_results_test = grp.transform(test)
# SRP
srp = SparseRandomProjection(n_components=n_comp, dense_output=True, random_state=420)
srp_results_train = srp.fit_transform(train.drop(["y"], axis=1))
srp_results_test = srp.transform(test)
# Append decomposition components to datasets
for i in range(1, n_comp+1):
train['pca_' + str(i)] = pca2_results_train[:,i-1]
test['pca_' + str(i)] = pca2_results_test[:, i-1]
train['ica_' + str(i)] = ica2_results_train[:,i-1]
test['ica_' + str(i)] = ica2_results_test[:, i-1]
start_time = time.time()
# Load the data
from income_data import X, y, X_train, X_test, y_train, y_test
# Scale the data
scaler = StandardScaler()
scaler.fit(X)
X_train_std = scaler.transform(X)
X_test_std = scaler.transform(X)
X_toCluster = X_train_std
y_inputs = y
# Reduce Dimensionality (Randomized Projections)
projection = ProjectionAlgorithm(n_components=22)
X_toCluster = projection.fit_transform(X_toCluster)
######
# Run k-means clustering with 1:n clusters determine scores for each
######
scores = []
silhouette_avg = []
BIC = []
maxClusters = 100
minClusters = 1
for i in range(minClusters, maxClusters):
kmeans = KMeans(n_clusters=i + 1, random_state=0)
cluster_labels = kmeans.fit_predict(X_toCluster)
scores.append(kmeans.score(X_toCluster))
silhouette_avg.append(silhouette_score(X, cluster_labels))
BIC.append(compute_bic(kmeans, X_toCluster))
from load_mydata import LoadData
import math
mushroom = LoadData("mushroom")
data = scale(mushroom.data)
labels = np.array(mushroom.labels)
n_samples, n_features = data.shape
n_digits = len(np.unique(labels))
n_iter = 1000
print("n_digits: %d, \t n_samples %d, \t n_features %d"
% (n_digits, n_samples, n_features))
t0 = time()
rp = GaussianRandomProjection(n_components=20)
reduced_data = rp.fit_transform(data)
print("time spent: %0.3fs" % (time()-t0))
#reduced_data = data
# Plot the data
fig=plt.figure()
#plt.clf()
n_plots=9
h = 0.02
x_min, x_max = reduced_data[:, 0].min(), reduced_data[:, 0].max()
y_min, y_max = reduced_data[:, 1].min(), reduced_data[:, 1].max()
for index in range(1,n_plots+1):
vert=math.floor(math.sqrt(n_plots))
hori=n_plots/vert
fig.add_subplot(vert,hori,index)
i,j = 2*index-2, 2*index-1
# Perform Truncated Singular Value Decomposition (SVD) from sklearn.decomposition import TruncatedSVD as TruncSVD tsvd = TruncSVD(n_components=num_components, algorithm='randomized', random_state=0) tsvd_transformed_data_train = tsvd.fit_transform(sparse_trainData) tsvd_transformed_data_valid = tsvd.transform(sparse_validData) # Perform Randomized Principal Components Analysis (PCA) from sklearn.decomposition import RandomizedPCA as RPCA rpca = RPCA(n_components=num_components) rpca_transformed_data_train = rpca.fit_transform(dense_trainData) rpca_transformed_data_valid = rpca.transform(dense_validData) # Perform Gaussian Random Projection from sklearn.random_projection import GaussianRandomProjection as GaussRan grp = GaussRan(n_components=num_components) grp_transformed_data_train = grp.fit_transform(dense_trainData) grp_transformed_data_valid = grp.transform(dense_validData) # Perform Sparse Random Projection from sklearn.random_projection import SparseRandomProjection as SparseRan srp = SparseRan(n_components=num_components, random_state=0) srp_transformed_data_train = srp.fit_transform(dense_trainData) srp_transformed_data_valid = srp.transform(dense_validData) # Perform classification using 1-Nearest Neighbor Classifier from sklearn.neighbors import KNeighborsClassifier # Create a subset grid to plot performance against numbers of components tsvd_max = tsvd_transformed_data_train.shape[1] plot_subset = [] length_of_plot_subset = len(plot_subset)
import itertools
from scipy import linalg
import matplotlib as mpl
from sklearn import mixture
df = pd.read_csv('tic-tac-toe.data', sep=",", skiprows=0)
df = np.array(df)
print(df.shape, df.dtype)
dat = df[:, 0:9]
tar1 = df[:, 9]
X = dat
y = tar1
rp1 = GaussianRandomProjection(n_components=2)
X1 = rp1.fit_transform(X)
plt.figure()
for i in range(len(y)):
if y[i] == 0:
plt.scatter(X1[i, 0], X1[i, 1], color='r')
elif y[i] == 1:
plt.scatter(X1[i, 0], X1[i, 1], color='b')
plt.title('visualization of data in 2D (rp)-> tic-tac toe dataset')
plt.show()
r = np.array([7, 17, 37, 57, 77])
plt.figure()
for m in range(5):
x1 = []
# e1=[]
X = data.iloc[:, :41]
y = data.iloc[:, 41]
scaler = MinMaxScaler(feature_range=[0, 100])
from sklearn.preprocessing import StandardScaler
X_norm = StandardScaler().fit_transform(X)
###
pca = PCA(n_components=10, random_state=10)
X_r = pca.fit(X).transform(X)
X_pca = X_r
####
ica = FastICA(n_components=10, random_state=10)
X_r = ica.fit(X).transform(X)
X_ica = X_r
####
rca = GaussianRandomProjection(n_components=10, random_state=10)
X_r = rca.fit_transform(X_norm)
X_rca = X_r
####
svd = SVD(n_components=2)
X_r = svd.fit_transform(X_norm)
X_svd = X_r
clf = MLPClassifier(hidden_layer_sizes=(82, 82, 82),
alpha=0.316227766,
learning_rate_init=0.016,
random_state=0,
solver="lbfgs")
clusterer = KMeans(n_clusters=10, random_state=10).fit(X_pca)
y_kmeans = clusterer.labels_
X_df = pd.DataFrame(X_pca)
def Random_Projection(M, new_dim, prng):
proj = GaussianRandomProjection(n_components=new_dim, eps=0.1, random_state=None)
return proj.fit_transform(M)
int10 = int10 / max(int10)
df_non_obj_feats['binSum'] = df_non_obj_feats.apply(sum, 1)
df_non_obj_feats['binDec'] = int10
all_data_proc = pd.concat((df_obj_feats_freq, df_non_obj_feats), axis=1)
#%%
from sklearn.decomposition import PCA, FastICA
from sklearn.random_projection import GaussianRandomProjection
from sklearn.random_projection import SparseRandomProjection
n_comp = 12
# GRP
grp = GaussianRandomProjection(n_components=n_comp, eps=0.1, random_state=420)
grp_results = grp.fit_transform(all_data_proc)
# SRP
srp = SparseRandomProjection(n_components=n_comp, dense_output=True, random_state=420)
srp_results = srp.fit_transform(all_data_proc)
# PCA
pca = PCA(n_components=n_comp, random_state=420)
pca_results = pca.fit_transform(all_data_proc)
# ICA
ica = FastICA(n_components=n_comp, random_state=420)
ica_results = ica.fit_transform(all_data_proc)
for i in range(1, n_comp+1):
all_data_proc['pca_' + str(i)] = pca_results[:,i-1]
all_data_proc['ica_' + str(i)] = ica_results[:, i-1]
def gaussianRP(data):
rp = GaussianRandomProjection(n_components=new_dimension)
return rp.fit_transform(data)
