def perform_correspondence_analysis(data_frame):
mca = prince.MCA()
mca = prince.MCA(n_components=2,
n_iter=3,
copy=True,
check_input=True,
engine='auto',
random_state=42)
ptumor_mca = mca.fit(data_frame)
ax = ptumor_mca.plot_coordinates(X=data_frame,
ax=None,
figsize=(10, 10),
show_row_points=False,
row_points_size=0,
show_row_labels=False,
show_column_points=True,
column_points_size=30,
show_column_labels=True,
legend_n_cols=1).legend(
loc='center left',
bbox_to_anchor=(1, 0.5))
plt.show()
def do_mca(self):
import prince
x_train, x_test, y_train, y_test = self.scale_data()
mca = prince.MCA(n_components=12, random_state=42)
x_train = mca.fit_transform(x_train)
x_test = mca.fit(x_test)
return x_train, x_test, y_train, y_test
def peformMCA(state):
global persondatadf, mca_res
cat_data = persondatadf[['SCHL', 'RAC1P', 'ESR', 'ST']]
if state > 0:
cat_data = cat_data[cat_data['ST'] == state]
cat_data = cat_data.sample(frac=0.1)
cat_data.drop(columns="ST", inplace=True)
cat_data['RAC1P'] = cat_data['RAC1P'].apply(lambda race: races.get(race))
cat_data['SCHL'] = cat_data['SCHL'].apply(lambda deg: degrees.get(deg))
cat_data['ESR'] = cat_data['ESR'].apply(lambda emp: employment.get(emp))
cat_data = cat_data.fillna("Unknown")
mca = prince.MCA(
n_components=2,
n_iter=3,
copy=True,
check_input=True,
engine='auto',
random_state=42
)
mca = mca.fit(cat_data)
mca_res = mca.column_coordinates(cat_data)
mca_res.reset_index(inplace=True)
types = {
"SCHL": 1,
"RAC1P": 2,
"ESR": 3
}
mca_res['type'] = mca_res['index'].apply(lambda idx: types.get(idx.split('_')[0]))
mca_res['index'] = mca_res['index'].apply(lambda idx: idx.split('_')[1])
mca_res.rename(columns={0: 'x', 1: 'y', index: 'cat'}, inplace=True)
def generate_mca(df, save_path=None):
"""
:param df: dataframe entered that contains categorical variables but can also contain numerical ones
:param save_path: path for saving the figure
:return:
"""
cat_feature_list = [
x for x in df.columns if x not in df._get_numeric_data().columns
]
df_cc_cat = df[cat_feature_list]
mca = prince.MCA(n_components=2,
n_iter=3,
copy=True,
check_input=True,
engine='auto',
random_state=42)
mca.fit(df_cc_cat.astype('category'))
mca.plot_coordinates(X=df_cc_cat.astype('category'),
ax=None,
figsize=(7, 7),
show_row_points=False,
row_points_size=30,
show_row_labels=False,
show_column_points=True,
column_points_size=40,
show_column_labels=True,
legend_n_cols=2)
if save_path is not None:
plt.savefig(save_path / Path('mca.png'))
plt.close('all')
def mca(self, df, cols):
"""
cols: list of categorical column names
Do a multiple correspondence analysis
"""
mca = prince.MCA(n_components=2,
n_iter=3,
copy=True,
check_input=True,
engine='auto')
mca.fit(df[cols])
fig, ax = plt.subplots(figsize=(10, 10))
mca.plot_coordinates(X=df[cols],
ax=ax,
show_row_points=True,
row_points_size=10,
show_row_labels=False,
show_column_points=True,
column_points_size=30,
show_column_labels=False,
legend_n_cols=1)
plt.show()
print("Explained inertia:", mca.explained_inertia_)
return mca
def test_row_cos2(self):
mca = prince.MCA(n_components=4, random_state=42)
mca.fit(self.X)
r_cos2 = mca.row_cos2()
self.assertEquals(r_cos2.shape, (6, 4))
pd.testing.assert_index_equal(r_cos2.index, mca.row_masses_.index)
self.assert_(np.all((r_cos2 >= 0) & (r_cos2 <= 1)), "All Cos2 should be between 0 and 1")
self.assert_(np.all(r_cos2.sum(axis=1) <= 1), "Cos2 across dimensions should be near 1")
def test_column_cos2(self):
mca = prince.MCA(n_components=4, random_state=42)
mca.fit(self.X)
c_cos2 = mca.column_cos2()
self.assertEquals(c_cos2.shape, (22, 4))
pd.testing.assert_index_equal(c_cos2.index, mca.col_masses_.index)
self.assert_(np.all((c_cos2 >= 0) & (c_cos2 <= 1)), "All Cos2 should be between 0 and 1")
# Should be really <= 1., but account for floating precision error
self.assert_(np.all(c_cos2.sum(axis=1) <= 1.000001), "Cos2 across dimensions should be near 1")
def categorical_MCA(self, X, n_components=4, n_iter=1000):
X = X.copy()
cat_data, non_cat_data = self.categorize_data(X)
mca = prince.MCA(n_components=n_components, n_iter=n_iter)
cat_reduced = mca.fit_transform(cat_data)
cat_reduced.columns = [
"MCA_{}".format(i + 1) for i, v in enumerate(cat_reduced.columns)
]
return pd.concat([cat_reduced, non_cat_data], axis=1)
def prince_mca(X, facet1n2_sample_ids, facet1_sample_ids, facet2_sample_ids,
pairID, unique_samples, unique_facets):
facet1_trunc = facet1[0:15]
facet2_trunc = facet2[0:15]
outF.write('Started prince_mca module...' + '\n')
df = pd.DataFrame(data=X, index=unique_samples, columns=unique_facets)
mca = prince.MCA(df, n_components=2)
v = mca.n_rows
row_principal_coordinates = mca.row_principal_coordinates
row_principal_coordinates.columns = ['x', 'y']
# adding info to df for graph drawing
row_principal_coordinates.index.name = 'id'
row_principal_coordinates['Attribute'] = 0
row_principal_coordinates.loc[
row_principal_coordinates.index.isin(facet1_sample_ids),
'Attribute'] = facet1
row_principal_coordinates.loc[
row_principal_coordinates.index.isin(facet2_sample_ids),
'Attribute'] = facet2
row_principal_coordinates.loc[
row_principal_coordinates.index.isin(facet1n2_sample_ids),
'Attribute'] = 'both'
# adds column describing spot frequency for depth visualisation
# row_principal_coordinates['s'] = row_principal_coordinates.groupby(['x','y']).transform('count')
print(row_principal_coordinates.groupby(['x', 'y']).transform('count'))
sys.exit()
# # To see data input
# print(row_principal_coordinates)
mcaname = str('data/plots/mca_' + str(pairID) + '.dat')
row_principal_coordinates.to_csv(mcaname)
# try:
# # producing 3D dimension reduction for mancluster.py (generally turned off in mancluster too)
# mca3 = prince.MCA(df, n_components=3)
# mca3_df = mca3.row_principal_coordinates
# mca3_df.columns = ['x', 'y', 'z']
# mca3_df.index.name = 'id'
# mca3_df.loc[mca3_df.index.isin(facet1_sample_ids), 'Attribute'] = facet1
# mca3_df.loc[mca3_df.index.isin(facet2_sample_ids), 'Attribute'] = facet2
# mca3_df.loc[mca3_df.index.isin(facet1n2_sample_ids), 'Attribute'] = 'both'
# mca3_df['s'] = mca3_df.groupby(['x','y', 'z']).transform('count')
# mca3name = str('data/plots/mca3d_' + str(pairID) + '.dat')
# mca3_df.to_csv(mca3name)
# except ValueError: # an unknown issue which rarely occurs to reproduce run phenotypes and phenotype
# continue
return (row_principal_coordinates, mcaname)
def MCA(X):
#X = pd.read_csv('https://archive.ics.uci.edu/ml/machine-learning-databases/balloons/adult+stretch.data')
#X.columns = ['Color', 'Size', 'Action', 'Age', 'Inflated']
print(X.head())
mca = prince.MCA()
mca = mca.fit(X) # same as calling ca.fs_r(1)
mca = mca.transform(
X) # same as calling ca.fs_r_sup(df_new) for *another* test set.
return mca
def dimension_reduction_pca_mca(self, df):
### MCA - Categorical features
print("--------------------------")
print(df.head())
cat_cols = []
if self.one_hot is True:
cat_cols = self.encoders.get_feature_names(
self.categorical_features_initial) + ["exist_closed"]
else:
cat_cols = self.categorical_features_final
print(cat_cols)
# If my_mca is None, it means it is df_train. So we fit my_mca
n_comp = len(cat_cols)
if self.my_mca is None:
self.my_mca = prince.MCA(n_components=n_comp)
self.my_mca.fit(df[cat_cols])
cols = []
for i in range(n_comp):
cols += ["MCA_" + str(i + 1)]
print(df[cat_cols].shape)
print(self.my_mca)
aux_mca = self.my_mca.transform(df[cat_cols])
aux_mca.columns = cols
df = df.drop(cat_cols, axis=1)
df = df.join(aux_mca)
## PCA - Numerical features
# If my_pca is 0, it means it is df_train. So we fit my_pca
num_cols = self.numerical_features_final
n_comp = len(num_cols)
print(num_cols)
if self.my_pca is None:
self.my_pca = PCA(n_components=n_comp)
self.my_pca.fit(df[num_cols])
cols = []
for i in range(n_comp):
cols += ["PCA_" + str(i + 1)]
print(df.head())
print(num_cols)
aux_pca = pd.DataFrame(self.my_pca.transform(df[num_cols]),
columns=cols)
df = df.drop(num_cols, axis=1)
df = df.join(aux_pca)
print(self.my_pca.explained_variance_ratio_)
print(df.head())
return df
def MCAX(data, cat_columns):
"""
cat_columns: list of categorical columns
"""
X = data[[cat_columns]]
print(X.head())
mca = prince.MCA()
mca = mca.fit(X) # same as calling ca.fs_r(1)
mca = mca.transform(
X) # same as calling ca.fs_r_sup(df_new) for *another* test set.
print(mca)
return mca
def OneHotEncode(self, data, column):
encoder = ce.OneHotEncoder(cols=[column], return_df=True)
return encoder.fit_transform(data)
# High Cardinality of Features
def FeatureHasher(selfself, data, column, components):
encoder = ce.HashingEncoder(cols=column, n_components=components)
return encoder.fit_transform(data)
def LabelEncoding(self, data, column):
encoder = ce.OrdinalEncoder(cols=[column], return_df=True)
return encoder.fit_transform(data)
# High Cardinality of Features
def BinaryEncoder(self, data, column):
encoder = ce.BinaryEncoder(cols=[column], return_df=True)
return encoder.fit_transform(data)
def feature_encode(self, data):
l = []
for col in data.columns:
n = data.groupby([col])
if n.ngroups > 10000:
continue
if n.ngroups < 10000 and n.ngroups > 1000:
l.append(self.BinaryEncoder(data, col, 25))
continue
if n.ngroups < 1000 and n.groups > 10:
l.append(self.FeatureHasher(data, col, 15))
continue
def Type_Conversion(Stats_Master):
PCA_Master = Stats_Master.copy()
PCA_Type = PCA_Master[['Type_1', 'Type_2']].fillna(value='None')
mca = prince.MCA(n_components=15,
n_iter=100,
copy=False,
engine='auto',
random_state=42)
Typed_MCA = mca.fit(PCA_Type)
print(np.sum(Typed_MCA.explained_inertia_))
mca_Components = Typed_MCA.U_
df = pd.DataFrame(mca_Components, index=mca_Components[:, 0]).reset_index()
df = df.drop(columns=['index'])
return df
def do_preprocess_3(df, target_col_name, plots_path, suffix):
# ------------------------------------------------------------------------------------ #
# Do data pre-processing with second approach of dimensionality reduction by taking
# finding the similarity between various levels with clustering technique and using
# the cluster numbers instead of the actual levels.
# ------------------------------------------------------------------------------------ #
# Drop a few columns as they should not have any influence on the target
# ------------------------------------------------------------------------------------ #
df = drop_cols(df, ["userid", "doctorid", "transdate"])
logging.info(df.describe())
logging.info(df.dtypes)
# Since all the columns are categorical attributes convert to the appropriate
# categorical type
for col in df.columns:
df[col] = df[col].astype('category')
logging.info('Dimensionality Reduction with MCA')
mca = prince.MCA(df, n_components=1100)
# logging.info('principal components are :: '+str(mca.categorical_columns))
# logging.info('principal components are :: ' + str(mca.column_component_contributions))
# logging.info('principal components are :: ' + str(mca.column_correlations))
# logging.info('principal components are :: ' + str(mca.column_cosine_similarities))
print('MCA is :: ', mca)
logging.info('principal components are :: ' + str(mca.eigenvalues))
logging.info('column_correlations are :: ' + str(mca.column_correlations))
logging.info('cumulative_explained_inertia are :: ' +
str(mca.cumulative_explained_inertia))
logging.info('explained_inertia are :: ' + str(mca.explained_inertia))
logging.info('cumulative_explained_inertia are :: ' +
str(mca.row_cosine_similarities))
logging.info(' row_principal_coordinates are :: ' +
str(mca.row_principal_coordinates))
# logging.info('principal components are :: ' + str(mca.column_standard_coordinates))
# mca.plot_rows(show_points=True, show_labels=False, ellipse_fill=True)
# mca.plot_relationship_square()
mca.plot_cumulative_inertia(threshold=0.8)
# plt.savefig(str(plots_path) + 'MCA_Analysis_Cumulative_Inertia_'+suffix + '.png')
print(mca.head())
logging.info("Pre-processed data frame :: ")
logging.info(df.describe())
logging.info(df.dtypes)
def do_MCA(X, n_components=10):
'''
Performs multiple correspondance analysis on X
'''
warnings.filterwarnings("ignore", category=FutureWarning)
# run the MCA using prince
mca = prince.MCA(n_components=n_components)
mca = mca.fit(X)
# individual loadings onto components
mca.ind_scores = mca.row_coordinates(X).values
# edge loadings onto components
edge_scores = mca.column_coordinates(X).values
# exclude every other row (the zero loadings)
mca.edge_scores = edge_scores[1::2, :]
return mca
def SampleAndMCA():
FIELDS = {
'Council District': True,
'Report Day': True,
'Clearance Day': True,
'Highest NIBRS/UCR Offense Description': True,
'GO Location Zip': True,
'_id': False,
"Clearance Status": True
}
connection = MongoClient(MONGODB_HOST, MONGODB_PORT)
collection = connection[DBS_NAME][COLLECTION_NAME]
projects = collection.find(projection=FIELDS)
sample = []
cnt = 0
limit = 10000
for project in projects:
if (cnt < limit):
sample.append(project)
else:
idx = random.randint(0, cnt + 1)
if (idx < limit):
sample[idx] = project
cnt = cnt + 1
df = pd.DataFrame(sample)
mca = prince.MCA(df, n_components=2)
fig1, ax1 = mca.plot_cumulative_inertia()
fig3, ax3 = mca.plot_rows_columns()
fig4, ax4 = mca.plot_relationship_square()
plt.show()
return json.dumps("Sampling and Multiple Component Analysis done")
def test_plot_show_column_labels(self):
mca = prince.MCA(n_components=2)
mca.fit(self.X)
ax = mca.plot_coordinates(self.X, show_column_labels=True)
self.assertTrue(isinstance(ax, mpl.axes.Axes))
def test_pandas_dataframe(self):
mca = prince.MCA(n_components=2)
self.assertTrue(isinstance(mca.fit(self.X), prince.MCA))
self.assertTrue(isinstance(mca.transform(self.X), pd.DataFrame))
def test_numpy_array(self):
mca = prince.MCA(n_components=2)
self.assertTrue(isinstance(mca.fit(self.X.to_numpy()), prince.MCA))
self.assertTrue(
isinstance(mca.transform(self.X.to_numpy()), pd.DataFrame))
df = pd.read_csv('data/datalab_persona_run1_with_scale_cat_classless.csv')
df2 = pd.read_csv('data/datalab_persona_run1_with_scale_cat.csv')
df_class = df2['class'].values
cols = ['g' if x=='smoker' else 'b' for x in df_class]
# df = pd.read_csv('data/ogm.csv')
# cols = [x for x in df2.columns.values if
# x not in ['Age Next at DOC', 'Height', 'Weight', 'Annual Salary', 'Travel %']]
# df = pd.get_dummies(df)
mca = prince.MCA(df, n_components=-1)
# Set the axes you want to examine below, i.e. which component pair you are interested in - (0, 1)
vals = mca.row_principal_coordinates
print(len(vals))
vals=vals.values
plt.scatter(vals[:,0], vals[:,1], c=cols)
mca = prince.MCA(df2, n_components=-1)
# Set the axes you want to examine below, i.e. which component pair you are interested in - (0, 1)
def test_eigenvalues_are_corrected(self):
mca = prince.MCA(n_components=4, random_state=42)
mca.fit(self.X)
self.assertEquals(mca.K, 10)
np.testing.assert_allclose(mca.eigenvalues_, [.7004, .0123, .0003, 0 ], atol=0.0001)
tend_doy = pd.to_datetime(row['tend']).dayofyear
#calculate the median DOY
doy_mean = int((tstart_doy + tend_doy) / 2)
doy_mean_year.append(doy_mean)
doy_mean_year = np.asarray(doy_mean_year)
doy_mean_year = doy_mean_year.reshape(-1, 1)
# Encoding mean DOY with detection
enc = OneHotEncoder(handle_unknown='ignore')
enc.fit(doy_mean_year)
doy_mean_enc = enc.transform(doy_mean_year).toarray()
# MCA of detected DOYs
mca = prince.MCA()
mca = mca.fit(doy_mean_enc)
mca = mca.transform(doy_mean_enc)
mca_doy = np.array(mca)
####################################################################
## Stacking of variables of each features:
# - number of detections
# - avg intensity
# - started month of detection
stack = np.column_stack((det_int, mca_doy))
# Principal Component Analysis (PCA)
# Reducing the dimensions of stack from four to two
pca = PCA(n_components=2)
principal_comp = pca.fit_transform(stack)
def test_total_inertia(self):
mca = prince.MCA(n_components=4, random_state=42)
mca.fit(self.X)
np.testing.assert_almost_equal(mca.total_inertia_, 0.7130, 4)
def visualizePoints_comparison(self,
Sn_inst,
datapoints,
fig2,
position,
reductionMethod="pca",
training=False):
from sklearn import decomposition
count_inst = self.explain_indices.index(Sn_inst)
n_inst = int(Sn_inst)
instTmp2 = Orange.data.Instance(self.explain_dataset.domain,
self.explain_dataset[count_inst])
c = self.classifier(instTmp2, False)
labelledInstance = deepcopy(instTmp2)
X = datapoints.X
y = datapoints.Y
if reductionMethod == "pca":
pca = decomposition.PCA(n_components=3)
pca.fit(X)
X = pca.transform(X)
istance_transformed = pca.transform([labelledInstance.x])
elif reductionMethod == "mca":
import pandas as pd
import prince
dataK = []
for k in range(0, len(datapoints)):
dataK.append(datapoints[k].list)
columnsA = [i.name for i in datapoints.domain.variables]
if datapoints.domain.metas != ():
for i in range(0, len(datapoints.domain.metas)):
columnsA.append(datapoints.domain.metas[i].name)
data = pd.DataFrame(data=dataK, columns=columnsA)
columnsA = [i.name for i in datapoints.domain.attributes]
Xa = data[columnsA]
y = datapoints.Y
mca = prince.MCA(n_components=3,
n_iter=3,
copy=True,
check_input=True,
engine='auto',
random_state=42)
mca.fit(Xa)
X = mca.transform(Xa)
istance_transformed = mca.transform([[
labelledInstance[i].value
for i in labelledInstance.domain.attributes
]])
elif reductionMethod == "t-sne":
from sklearn.manifold import TSNE
XX = np.vstack([X, labelledInstance.x])
label_istance = float(max(list(self.map_names_class.keys())) + 1)
yy = np.concatenate((y, np.array([label_istance])))
tsne = TSNE(n_components=2, random_state=0)
tsne.fit(XX)
XX = tsne.fit_transform(XX)
else:
print("Reduction method available: pca, t-sne, selected",
reductionMethod)
label_istance = float(max(list(self.map_names_class.keys())) + 1)
y_l = y.astype(int)
labelMapNames = self.map_names_class.items()
instance_label_name = self.map_names_class[int(labelledInstance.y)]
if reductionMethod == "pca" or reductionMethod == "mca":
XX = np.vstack([X, istance_transformed])
yy = np.concatenate((y, np.array([label_istance])))
ax = fig2.add_subplot(1, 2, position, projection='3d')
# ax = Axes3D(fig, rect=[0, 0, .7, 1], elev=48, azim=134)
sc = ax.scatter(XX[:, 0],
XX[:, 1],
XX[:, 2],
c=yy,
cmap="Spectral",
edgecolor='k')
ax.w_xaxis.set_ticklabels([])
ax.w_yaxis.set_ticklabels([])
ax.w_zaxis.set_ticklabels([])
label_values = list(np.unique(y_l))
label_values.append(int(label_istance))
else:
ax = fig2.add_subplot(1, 2, position)
sc = ax.scatter(XX[:, 0], XX[:, 1], c=yy, cmap="tab10")
ax.xaxis.set_ticklabels([])
ax.yaxis.set_ticklabels([])
label_values = list(np.unique(yy.astype(int)))
colors = [sc.cmap(sc.norm(i)) for i in label_values]
custom_lines = [
plt.Line2D([], [],
ls="",
marker='.',
mec='k',
mfc=c,
mew=.1,
ms=20) for c in colors
]
d2 = dict(labelMapNames)
d2[int(label_istance)] = instance_label_name + "_i"
labelMapNames_withInstance = d2.items()
newdict = {
k: dict(labelMapNames_withInstance)[k]
for k in label_values
}
ax.legend(custom_lines, [lt[1] for lt in newdict.items()],
loc='center left',
bbox_to_anchor=(0.9, .5),
fontsize='x-small')
return fig2
def test_explained_inertia(self):
mca = prince.MCA(n_components=4, random_state=42)
mca.fit(self.X)
self.assertEquals(mca.J, 22)
np.testing.assert_allclose(mca.explained_inertia_, [.9519, .0168, .0004, 0 ], atol=0.0001)
def showNearestNeigh_type_2(self,
Sn_inst,
fig2,
position,
reductionMethod="pca",
training=False):
from sklearn import decomposition
count_inst = self.explain_indices.index(Sn_inst)
n_inst = int(Sn_inst)
# Plottarla con un colore diverso
instTmp2 = Orange.data.Instance(self.explain_dataset.domain,
self.explain_dataset[count_inst])
c = self.classifier(instTmp2, False)
small_dataset_len = 150
if self.training_dataset_len < small_dataset_len:
self.starting_K = max(
int(self.mappa_class[self.map_names_class[c[0]]] *
self.training_dataset_len), self.K)
if training == True:
Kneighbors_data, removeToDo = genNeighborsInfoTraining(
self.training_dataset, self.NearestNeighborsAll,
self.explain_dataset.X[count_inst], n_inst, self.starting_K,
self.unique_filename, self.classifier)
else:
Kneighbors_data, removeToDo = gen_neighbors_info(
self.training_dataset,
self.NearestNeighborsAll,
self.explain_dataset[count_inst],
self.starting_K,
self.unique_filename,
self.classifier,
save=False)
X = Kneighbors_data.X
y = Kneighbors_data.Y
labelledInstance = deepcopy(instTmp2)
if reductionMethod == "pca":
pca = decomposition.PCA(n_components=3)
pca.fit(X)
X = pca.transform(X)
istance_transformed = pca.transform([labelledInstance.x])
elif reductionMethod == "mca":
import pandas as pd
import prince
dataK = []
for k in range(0, len(Kneighbors_data)):
dataK.append(Kneighbors_data[k].list)
columnsA = [i.name for i in Kneighbors_data.domain.variables]
if Kneighbors_data.domain.metas != ():
for i in range(0, len(Kneighbors_data.domain.metas)):
columnsA.append(Kneighbors_data.domain.metas[i].name)
data = pd.DataFrame(data=dataK, columns=columnsA)
columnsA = [i.name for i in Kneighbors_data.domain.attributes]
Xa = data[columnsA]
y = Kneighbors_data.Y
mca = prince.MCA(n_components=3,
n_iter=3,
copy=True,
check_input=True,
engine='auto',
random_state=42)
mca.fit(Xa)
X = mca.transform(Xa)
istance_transformed = mca.transform([[
labelledInstance[i].value
for i in labelledInstance.domain.attributes
]])
elif reductionMethod == "t-sne":
from sklearn.manifold import TSNE
XX = np.vstack([X, labelledInstance.x])
label_istance = float(max(list(self.map_names_class.keys())) + 1)
yy = np.concatenate((y, np.array([label_istance])))
tsne = TSNE(n_components=2, random_state=0)
tsne.fit(XX)
XX = tsne.fit_transform(XX)
else:
print("Reduction method available: pca, t-sne, selected",
reductionMethod)
label_istance = float(max(list(self.map_names_class.keys())) + 1)
y_l = y.astype(int)
labelMapNames = self.map_names_class.items()
instance_label_name = self.map_names_class[int(labelledInstance.y)]
if reductionMethod == "pca" or reductionMethod == "mca":
XX = np.vstack([X, istance_transformed])
yy = np.concatenate((y, np.array([label_istance])))
ax = fig2.add_subplot(1, 2, position, projection='3d')
# ax = Axes3D(fig, rect=[0, 0, .7, 1], elev=48, azim=134)
sc = ax.scatter(XX[:, 0],
XX[:, 1],
XX[:, 2],
c=yy,
cmap="Spectral",
edgecolor='k')
ax.w_xaxis.set_ticklabels([])
ax.w_yaxis.set_ticklabels([])
ax.w_zaxis.set_ticklabels([])
label_values = list(np.unique(y_l))
label_values.append(int(label_istance))
ax.set_title(self.classifier_name.upper())
else:
ax = fig2.add_subplot(1, 2, position)
sc = ax.scatter(XX[:, 0], XX[:, 1], c=yy, cmap="tab10")
ax.xaxis.set_ticklabels([])
ax.yaxis.set_ticklabels([])
label_values = list(np.unique(yy.astype(int)))
ax.set_title(self.classifier_name.upper())
colors = [sc.cmap(sc.norm(i)) for i in label_values]
d2 = dict(labelMapNames)
d2[int(label_istance)] = instance_label_name + "_i"
labelMapNames_withInstance = d2.items()
newdict = {
k: dict(labelMapNames_withInstance)[k]
for k in label_values
}
# ax.legend(custom_lines, [lt[1] for lt in newdict.items()],
# loc='center left', bbox_to_anchor=(0.9, .5), fontsize = 'x-small')
return fig2, newdict, colors
def dim_reduce_init(y,
n_clusters,
k,
r,
nj,
var_distrib,
use_famd=False,
seed=None):
''' Perform dimension reduction into a continuous r dimensional space and determine
the init coefficients in that space
y (numobs x p ndarray): The observations containing categorical variables
n_clusters (int): The number of clusters to look for in the data
k (1d array): The number of components of the latent Gaussian mixture layers
r (int): The dimension of latent variables
nj (p 1darray): For binary/count data: The maximum values that the variable can take.
For ordinal data: the number of different existing categories for each variable
var_distrib (p 1darray): An array containing the types of the variables in y
use_famd (Bool): Whether to the famd method (True) or not (False), to initiate the
first continuous latent variable. Otherwise MCA is used.
seed (None): The random state seed to use for the dimension reduction
---------------------------------------------------------------------------------------
returns (dict): All initialisation parameters
'''
L = len(k)
numobs = len(y)
S = np.prod(k)
#==============================================================
# Dimension reduction performed with MCA
#==============================================================
if type(y) != pd.core.frame.DataFrame:
raise TypeError('y should be a dataframe for prince')
if (np.array(var_distrib) == 'ordinal').all():
print('PCA init')
pca = prince.PCA(n_components = r[0], n_iter=3, rescale_with_mean=True,\
rescale_with_std=True, copy=True, check_input=True, engine='auto',\
random_state = seed)
z1 = pca.fit_transform(y).values
elif use_famd:
famd = prince.FAMD(n_components = r[0], n_iter=3, copy=True, check_input=False, \
engine='auto', random_state = seed)
z1 = famd.fit_transform(y).values
else:
# Check input = False to remove
mca = prince.MCA(n_components = r[0], n_iter=3, copy=True,\
check_input=False, engine='auto', random_state = seed)
z1 = mca.fit_transform(y).values
z = [z1]
y = y.values
#==============================================================
# Set the shape parameters of each data type
#==============================================================
y_bin = y[:, np.logical_or(var_distrib == 'bernoulli',\
var_distrib == 'binomial')].astype(int)
nj_bin = nj[np.logical_or(var_distrib == 'bernoulli',\
var_distrib == 'binomial')]
nb_bin = len(nj_bin)
y_ord = y[:, var_distrib == 'ordinal'].astype(float).astype(int)
nj_ord = nj[var_distrib == 'ordinal']
nb_ord = len(nj_ord)
y_categ = y[:, var_distrib == 'categorical']
nj_categ = nj[var_distrib == 'categorical']
nb_categ = len(nj_categ)
# Set y_count standard error to 1
y_cont = y[:, var_distrib == 'continuous']
# Before was np.float
y_cont = y_cont / np.std(y_cont.astype(float), axis=0, keepdims=True)
nb_cont = y_cont.shape[1]
#=======================================================
# Determining the Gaussian Parameters
#=======================================================
init = {}
eta = []
H = []
psi = []
paths_pred = np.zeros((numobs, L))
for l in range(L):
params = get_MFA_params(z[l], k[l], r[l:])
eta.append(params['eta'][..., n_axis])
H.append(params['H'])
psi.append(params['psi'])
z.append(params['z_nextl'])
paths_pred[:, l] = params['classes']
paths, nb_paths = np.unique(paths_pred, return_counts=True, axis=0)
paths, nb_paths = add_missing_paths(k, paths, nb_paths)
w_s = nb_paths / numobs
w_s = np.where(w_s == 0, 1E-16, w_s)
# Check all paths have been explored
if len(paths) != S:
raise RuntimeError('Real path len is', S, 'while the initial number', \
'of path was only', len(paths))
w_s = w_s.reshape(*k).flatten('C')
#=============================================================
# Enforcing identifiability constraints over the first layer
#=============================================================
H = diagonal_cond(H, psi)
Ez, AT = compute_z_moments(w_s, eta, H, psi)
eta, H, psi = identifiable_estim_DGMM(eta, H, psi, Ez, AT)
init['eta'] = eta
init['H'] = H
init['psi'] = psi
init['w_s'] = w_s # Probabilities of each path through the network
init['z'] = z
# The clustering layer is the one used to perform the clustering
# i.e. the layer l such that k[l] == n_clusters
clustering_layer = np.argmax(np.array(k) == n_clusters)
init[
'classes'] = paths_pred[:,
clustering_layer] # 0 To change with clustering_layer_idx
#=======================================================
# Determining the coefficients of the GLLVM layer
#=======================================================
# Determining lambda_bin coefficients.
lambda_bin = np.zeros((nb_bin, r[0] + 1))
for j in range(nb_bin):
Nj = np.max(y_bin[:, j]) # The support of the jth binomial is [1, Nj]
if Nj == 1: # If the variable is Bernoulli not binomial
yj = y_bin[:, j]
z_new = z[0]
else: # If not, need to convert Binomial output to Bernoulli output
yj, z_new = bin_to_bern(Nj, y_bin[:, j], z[0])
lr = LogisticRegression()
if j < r[0] - 1:
lr.fit(z_new[:, :j + 1], yj)
lambda_bin[j, :j + 2] = np.concatenate(
[lr.intercept_, lr.coef_[0]])
else:
lr.fit(z_new, yj)
lambda_bin[j] = np.concatenate([lr.intercept_, lr.coef_[0]])
## Identifiability of bin coefficients
lambda_bin[:, 1:] = lambda_bin[:, 1:] @ AT[0][0]
# Determining lambda_ord coefficients
lambda_ord = []
for j in range(nb_ord):
Nj = len(np.unique(
y_ord[:, j], axis=0)) # The support of the jth ordinal is [1, Nj]
yj = y_ord[:, j]
ol = OrderedLogit()
ol.fit(z[0], yj)
## Identifiability of ordinal coefficients
beta_j = (ol.beta_.reshape(1, r[0]) @ AT[0][0]).flatten()
lambda_ord_j = np.concatenate([ol.alpha_, beta_j])
lambda_ord.append(lambda_ord_j)
# Determining the coefficients of the continuous variables
lambda_cont = np.zeros((nb_cont, r[0] + 1))
for j in range(nb_cont):
yj = y_cont[:, j]
linr = LinearRegression()
if j < r[0] - 1:
linr.fit(z[0][:, :j + 1], yj)
lambda_cont[j, :j + 2] = np.concatenate([[linr.intercept_],
linr.coef_])
else:
linr.fit(z[0], yj)
lambda_cont[j] = np.concatenate([[linr.intercept_], linr.coef_])
## Identifiability of continuous coefficients
lambda_cont[:, 1:] = lambda_cont[:, 1:] @ AT[0][0]
# Determining lambda_categ coefficients
lambda_categ = []
for j in range(nb_categ):
yj = y_categ[:, j]
lr = LogisticRegression(multi_class='multinomial')
lr.fit(z[0], yj)
## Identifiability of categ coefficients
beta_j = lr.coef_ @ AT[0][0]
lambda_categ.append(np.hstack([lr.intercept_[..., n_axis], beta_j]))
init['lambda_bin'] = lambda_bin
init['lambda_ord'] = lambda_ord
init['lambda_cont'] = lambda_cont
init['lambda_categ'] = lambda_categ
return init
cons_ultim_12(data_out.estrato.values[i], data_out.unidades_ant.values[i])
for i in range(len(data_out.estrato))
]
unidades_ultim_12 = np.reshape(unidades_ultim_12, ((-1, 13)))
unidades_ultim_12 = pd.DataFrame(
unidades_ultim_12, columns=["mes_t-" + str(12 - i) for i in range(13)])
print("[INFO] Data chunk 2 ...done")
## modificar estrato a valor numérico
data_out['estrato'] = data_out['estrato'].apply(lambda x: kwh_cost[x][1])
data_aux = data_out[['estrato', 'localidad', 'valor_ant']].copy()
data_aux.valor_ant = [(i - np.min(data_aux.valor_ant)) /
(np.max(data_aux.valor_ant) - np.min(data_aux.valor_ant))
for i in data_aux.valor_ant]
mca = pr.MCA(n_components=-1).fit_transform(data_aux.values)
gmm = GaussianMixture(n_components=4)
gmm.fit(mca)
labels = gmm.predict(mca)
### Modelo predictivo
### función para medir desempeño
def metrics(real, pred):
kappa = cohen_kappa_score(real, pred)
acc = accuracy_score(real, pred)
f1 = f1_score(real, pred)
prec = precision_score(real, pred)
recall = recall_score(real, pred)
import pandas as pd
import matplotlib.pyplot as plt
import prince
#########################################################################################################
df_dataAquitaine = pd.read_csv("/home/alauzettho/BOAMP/DataScience/data.csv")
df_dataAquitaine = df_dataAquitaine.drop(columns='Unnamed: 0')
print('------------------- DATA AQUITAINE IMPORTED -------------------')
#########################################################################################################
df = df_dataAquitaine[[
'CPV', 'CP', 'CLASSE_LIBELLE', 'CRITERES_ATTRIBUTION_1',
'CRITERES_ATTRIBUTION_2'
]]
df = df.dropna()
print(df.shape)
mca = prince.MCA(n_components=2,
n_iter=3,
copy=True,
check_input=True,
engine='auto',
random_state=42)
mca = mca.fit(df)
ax = mca.plot_coordinates(X=df, ax=None, figsize=(6, 6), \
show_row_points=True, row_points_size=10, show_row_labels=False, show_column_points=True, \
column_points_size=30, show_column_labels=False, legend_n_cols=1)
plt.show()
def test_column_contributions(self):
mca = prince.MCA(n_components=4, random_state=42)
mca.fit(self.X)
c_cont = mca.column_contributions()
pd.testing.assert_index_equal(c_cont.index, mca.col_masses_.index)
np.testing.assert_allclose(c_cont.sum(axis=0), [1., 1., 1., 1. ], atol=0.0001)
