def calc_abs_corr(self):
"""
Calculate the distance matrix using a correlation approach for every column in self.ops_base_perf_vals
"""
# -- no normalisation in here as the best performing features have been picked already, potentially using normalisation
self.similarity_array,sort_ind,_ = idtop.calc_perform_corr_mat(self.ops_base_perf_vals,norm=None,
max_feat = self.ops_base_perf_vals.shape[1])
self.similarity_array_op_ids = self.good_perf_op_ids[sort_ind]
def calc_abs_corr(self):
"""
Calculate the distance matrix using a correlation approach for every column in self.ops_base_perf_vals
"""
# -- no normalisation in here as the best performing features have been picked already, potentially using normalisation
self.similarity_array, sort_ind, _ = idtop.calc_perform_corr_mat(
self.ops_base_perf_vals,
norm=None,
max_feat=self.ops_base_perf_vals.shape[1])
self.similarity_array_op_ids = self.good_perf_op_ids[sort_ind]
def plot_arr_dendrogram_bak(abs_corr_array, names):
"""
Compute dendrogram and create a plot plotting dendrogram and abs_corr_array
Parameters:
----------
abs_corr_array : ndarray
array containing the correlation matrix
names : list
list of strings containing the names of the operations in abs_corr_array in the
corresponding order.
Returns:
--------
index : list
list of indices used to reorder the correlation matrix
"""
figsize = (10, 10)
rect_dendro = [0.25, 0.76, 0.65, 0.23]
rect_matrix = [0.25, 0.1, 0.65, 0.65]
rect_color = [0.91, 0.1, 0.02, 0.65]
# Compute and plot dendrogram.
fig = plt.figure(figsize=figsize)
axdendro = fig.add_axes(rect_dendro)
corr_linkage = idtop.calc_linkage(abs_corr_array)[0]
corr_dendrogram = hierarchy.dendrogram(corr_linkage, orientation='top')
axdendro.set_xticks([])
axdendro.set_yticks([])
# Plot distance matrix.
axmatrix = fig.add_axes(rect_matrix)
index = corr_dendrogram['leaves']
abs_corr_array = abs_corr_array[index, :]
abs_corr_array = abs_corr_array[:, index]
im = axmatrix.matshow(abs_corr_array,
aspect='auto',
origin='upper',
vmin=0,
vmax=1)
axmatrix.set_xticks([])
axmatrix.set_yticks(range(len(index)))
axmatrix.set_yticklabels(np.array(names)[index])
# Plot colorbar.
axcolor = fig.add_axes(rect_color)
plt.colorbar(im, cax=axcolor)
#fig.savefig('/home/philip/work/reports/feature_importance/data/correlation_plots/problem_space/dendr_{:d}_Norm.png'.format(len(index)))
return index
def calc_hierch_cluster(self,t = 0.2, criterion='distance' ):
"""
Calculate the clustering using hierachical clustering
Parameters:
-----------
t : float
The threshold to apply when forming flat clusters.
criterion : str, optional
The criterion to use in forming flat clusters.
"""
self.linkage = idtop.calc_linkage(self.similarity_array)[0]
self.cluster_inds = hierarchy.fcluster(self.linkage, t = t, criterion=criterion)
# -- map index to op_id and create list of lists representing clusters
self.cluster_op_id_list = [[] for x in xrange(self.cluster_inds.max())]
for i,cluster_ind in enumerate(self.cluster_inds):
self.cluster_op_id_list[cluster_ind-1].append(self.similarity_array_op_ids[i])
def plot_arr_dendrogram_bak(abs_corr_array,names):
"""
Compute dendrogram and create a plot plotting dendrogram and abs_corr_array
Parameters:
----------
abs_corr_array : ndarray
array containing the correlation matrix
names : list
list of strings containing the names of the operations in abs_corr_array in the
corresponding order.
Returns:
--------
index : list
list of indices used to reorder the correlation matrix
"""
figsize=(10,10)
rect_dendro = [0.25,0.76,0.65,0.23]
rect_matrix = [0.25,0.1,0.65,0.65]
rect_color = [0.91,0.1,0.02,0.65]
# Compute and plot dendrogram.
fig = plt.figure(figsize=figsize)
axdendro = fig.add_axes(rect_dendro)
corr_linkage = idtop.calc_linkage(abs_corr_array)[0]
corr_dendrogram = hierarchy.dendrogram(corr_linkage, orientation='top')
axdendro.set_xticks([])
axdendro.set_yticks([])
# Plot distance matrix.
axmatrix = fig.add_axes(rect_matrix)
index = corr_dendrogram['leaves']
abs_corr_array = abs_corr_array[index,:]
abs_corr_array = abs_corr_array[:,index]
im = axmatrix.matshow(abs_corr_array, aspect='auto', origin='upper',vmin=0,vmax=1)
axmatrix.set_xticks([])
axmatrix.set_yticks(range(len(index)))
axmatrix.set_yticklabels(np.array(names)[index])
# Plot colorbar.
axcolor = fig.add_axes(rect_color)
plt.colorbar(im, cax=axcolor)
#fig.savefig('/home/philip/work/reports/feature_importance/data/correlation_plots/problem_space/dendr_{:d}_Norm.png'.format(len(index)))
return index
def calc_hierch_cluster(self, t=0.2, criterion='distance'):
"""
Calculate the clustering using hierachical clustering
Parameters:
-----------
t : float
The threshold to apply when forming flat clusters.
criterion : str, optional
The criterion to use in forming flat clusters.
"""
self.linkage = idtop.calc_linkage(self.similarity_array)[0]
self.cluster_inds = hierarchy.fcluster(self.linkage,
t=t,
criterion=criterion)
# -- map index to op_id and create list of lists representing clusters
self.cluster_op_id_list = [[] for x in xrange(self.cluster_inds.max())]
for i, cluster_ind in enumerate(self.cluster_inds):
self.cluster_op_id_list[cluster_ind - 1].append(
self.similarity_array_op_ids[i])
# -- Load the data
all_classes_avg = np.load(all_classes_avg_out_path)
op_id_good = np.load(op_id_good_path)
# -- Mask NaN entires
all_classes_avg_good = np.ma.masked_invalid(all_classes_avg[:, op_id_good])
# -- load a reference HCTSA_loc.mat containing all op_ids
import modules.misc.PK_matlab_IO as mIO
op_ref_HCTSA_path = '/home/philip/work/OperationImportanceProject/results/done/HCTSA_Beef.mat'
op, = mIO.read_from_mat_file(op_ref_HCTSA_path, ['Operations'],
is_from_old_matlab=True)
max_feat = 50
# -- calculate the correlation
abs_corr_array, sort_good_ind, all_classes_avg_good_norm = idtop.calc_perform_corr_mat(
all_classes_avg_good, norm='z-score', max_feat=max_feat)
# -- save the op id's in order of performance (first entry = best performance)
np.save(op_id_order_path, op_id_good[sort_good_ind])
# -- sort the permutation vector that would sort the data array containing the good operations only
np.save(sort_good_ind_path, sort_good_ind)
# -- extract the top feature names
names = hlp.ind_map_subset(op['id'], op['name'],
op_id_good[sort_good_ind][:max_feat])
# -- Calculate the measures to be plotted
problems_succ = (~all_classes_avg_good[:, sort_good_ind[:max_feat]].mask).sum(
axis=0)
u_stat_mean = all_classes_avg_good_norm[:,
sort_good_ind[:max_feat]].mean(axis=0)
def plot_arr_dendrogram(abs_corr_array,
names,
max_dist_cluster,
measures=None):
"""
Compute dendrogram and create a plot plotting dendrogram and abs_corr_array
Parameters:
----------
abs_corr_array : ndarray
array containing the correlation matrix
names : list
list of strings containing the names of the operations in abs_corr_array in the
corresponding order.
max_dist_cluster : float
Maximum distance in the clusters
measures : ndarray (n_measures x abs_corr_array.shape[0])
Array containing measures to be plotted on top of the matrix. Positions corresponding positions
of operations in abs_corr_array.
Returns:
--------
index : list
list of indices used to reorder the correlation matrix
"""
figsize = (18, 12)
#figsize=(46.81,33.11)
rect_measures = [0.25, 0.8075, 0.5, 0.15]
rect_dendro = [0.755, 0.02, 0.15, 0.94]
rect_matrix = [0.175, 0.02, 0.55, 0.94]
rect_color = [0.92, 0.02, 0.02, 0.94]
# Compute and plot dendrogram.
fig = plt.figure(figsize=figsize)
axdendro = fig.add_axes(rect_dendro)
corr_linkage = idtop.calc_linkage(abs_corr_array)[0]
corr_dendrogram = hierarchy.dendrogram(corr_linkage,
orientation='left',
color_threshold=max_dist_cluster)
#axdendro.set_xticks([])
axdendro.set_yticks([])
axdendro.axvline(max_dist_cluster, ls='--', c='k')
axdendro.set_xlabel('correlation distance')
# Plot distance matrix.
axmatrix = fig.add_axes(rect_matrix)
index = corr_dendrogram['leaves']
abs_corr_array = abs_corr_array[index, :]
abs_corr_array = abs_corr_array[:, index]
# -- plot the correlation matrix
vmin = round(np.min(abs_corr_array), 1)
vmax = 1
numSteps = (vmax - vmin) * 20 # steps of 0.05 in correlation
im = axmatrix.matshow(abs_corr_array,
aspect='auto',
origin='lower',
vmin=vmin,
vmax=vmax,
cmap=mpl.pyplot.cm.get_cmap('turbo', numSteps))
axmatrix.set_xticks([])
axmatrix.set_yticks(range(len(index)))
#axmatrix.set_yticklabels(np.array(names)[index],fontsize=5)
axmatrix.set_yticklabels(np.array(names)[index],
fontsize=5.6) #,rotation =45)
# Plot colorbar.
axcolor = fig.add_axes(rect_color)
cbar = plt.colorbar(im, cax=axcolor)
cbar.set_label('Pearson correlation')
# Plot the quality measures
'''axmeasure = fig.add_axes(rect_measures)
axmeasure.xaxis.set_ticklabels([])
axmeasure.scatter(np.arange(0,measures.shape[-1])+0.5,measures[0,index])
axmeasure.set_xlim([0,measures.shape[-1]])
axmeasure.set_ylabel('problems calculated')
axmeasure.yaxis.label.set_color('b')
[label.set_color('b') for label in axmeasure.get_yticklabels()]
axmeasure2 = axmeasure.twinx()
axmeasure2.plot(np.arange(0,measures.shape[-1])+0.5,measures[1,index],color='r')
axmeasure2.set_xlim([0,measures.shape[-1]])
[label.set_color('r') for label in axmeasure2.get_yticklabels()]
axmeasure2.set_ylabel('avg classification accuracy')
axmeasure2.yaxis.label.set_color('r')'''
# -----------------------------------------------------------------
# -- calculate and plot clusters ----------------------------------
# -----------------------------------------------------------------
#cluster_ind = hierarchy.fcluster(link_arr, t=cluster_t, criterion=cluster_criterion)
cluster_ind = hierarchy.fcluster(corr_linkage,
t=max_dist_cluster,
criterion='distance')
# -- plot delimiters for measures
cluster_bounds = np.hstack((-1, np.nonzero(np.diff(
cluster_ind[index]))[0], abs_corr_array.shape[0] - 1)) + 1
'''for bound in cluster_bounds:
axmeasure.axvline(bound,linestyle='--',color='k')'''
# -- calculate the locations for the cluster squares
patch_bounds = cluster_bounds - .5
patch_sizes = np.diff(patch_bounds)
cluter_square_params = tuple(
((patch_bounds[i], patch_bounds[i]), patch_sizes[i], patch_sizes[i])
for i in range(len(patch_sizes)))
for cluster_square_param in cluter_square_params:
axmatrix.add_patch(
mpl.patches.Rectangle(cluster_square_param[0],
cluster_square_param[1],
cluster_square_param[2],
fill=0,
ec='w',
lw=2))
# -----------------------------------------------------------------
# -- calculate and plot best features -----------------------------
# -----------------------------------------------------------------
best_features_marker = []
for (i, j) in zip(cluster_bounds[:-1], cluster_bounds[1:]):
measures_dendr = measures[1, index]
best_features_marker.append(i + np.argmin(measures_dendr[i:j]))
axmatrix.scatter(best_features_marker, best_features_marker, color='w')
axmatrix.set_xlim([-0.5, abs_corr_array.shape[0] - 0.5])
axmatrix.set_ylim([-0.5, abs_corr_array.shape[0] - 0.5])
[(text.set_color('k'), text.set_weight('bold'))
for i, text in enumerate(axmatrix.get_yticklabels())
if i in best_features_marker]
return index
problem_names_path = intermediate_data_root + 'problem_names.npy'
measures_problems_path = intermediate_data_root + 'measure_problems.npy'
# -- Load the data
all_classes_avg = np.load(all_classes_avg_out_path)
op_id_order = np.load(op_id_order_path)
op_id_good = np.load(op_id_good_path)
max_feat = 50
max_corr_dist = 0.2
# # -- mask all nan values and take top 200 features
# all_classes_avg_top = np.ma.masked_invalid(all_classes_avg[:,op_id_order[:100]])
# # -- calculate the z-score of the u stat array
# all_classes_avg_top = ((all_classes_avg_top.T - np.ma.mean(all_classes_avg_top,axis=1)) / np.ma.std(all_classes_avg_top,axis=1)).T
# abs_corr_array = np.abs(np.ma.corrcoef(all_classes_avg_top, rowvar=0))
# -- calculate the correlation array with respect to performance and mask nan.
abs_corr_array, sort_good_ind, all_classes_avg_good_norm = idtop.calc_perform_corr_mat(
all_classes_avg[:, op_id_good], norm='z-score', max_feat=max_feat)
all_classes_avg_top = np.ma.masked_invalid(
all_classes_avg[:, op_id_good][:, sort_good_ind[:max_feat]])
# -- calculate the linkage for the correlation
corr_linkage = idtop.calc_linkage(abs_corr_array)[0]
# -- extract operation names --- ------------------------------------------
# -- load a reference HCTSA_loc.mat containing all op_ids
op_ref_HCTSA_path = '/home/philip/work/OperationImportanceProject/results/done/HCTSA_Beef.mat'
op, = mIO.read_from_mat_file(op_ref_HCTSA_path, ['Operations'],
is_from_old_matlab=True)
top_id = op_id_good[sort_good_ind][:max_feat]
names = hlp.ind_map_subset(op['id'], op['name'],
op_id_good[sort_good_ind][:max_feat])
problem_names_path = intermediate_data_root+'problem_names.npy'
measures_problems_path = intermediate_data_root+'measure_problems.npy'
# -- Load the data
all_classes_avg = np.load(all_classes_avg_out_path)
op_id_order = np.load(op_id_order_path)
op_id_good = np.load(op_id_good_path)
max_feat = 50
max_corr_dist = 0.2
# # -- mask all nan values and take top 200 features
# all_classes_avg_top = np.ma.masked_invalid(all_classes_avg[:,op_id_order[:100]])
# # -- calculate the z-score of the u stat array
# all_classes_avg_top = ((all_classes_avg_top.T - np.ma.mean(all_classes_avg_top,axis=1)) / np.ma.std(all_classes_avg_top,axis=1)).T
# abs_corr_array = np.abs(np.ma.corrcoef(all_classes_avg_top, rowvar=0))
# -- calculate the correlation array with respect to performance and mask nan.
abs_corr_array,sort_good_ind,all_classes_avg_good_norm = idtop.calc_perform_corr_mat(all_classes_avg[:,op_id_good],norm='z-score', max_feat = max_feat)
all_classes_avg_top = np.ma.masked_invalid(all_classes_avg[:,op_id_good][:,sort_good_ind[:max_feat]])
# -- calculate the linkage for the correlation
corr_linkage = idtop.calc_linkage(abs_corr_array)[0]
# -- extract operation names --- ------------------------------------------
# -- load a reference HCTSA_loc.mat containing all op_ids
op_ref_HCTSA_path = '/home/philip/work/OperationImportanceProject/results/done/HCTSA_Beef.mat'
op, = mIO.read_from_mat_file(op_ref_HCTSA_path,['Operations'],is_from_old_matlab = True)
top_id = op_id_good[sort_good_ind][:max_feat]
names = hlp.ind_map_subset(op['id'], op['name'], op_id_good[sort_good_ind][:max_feat])
# -- extract problem names --- ------------------------------------------
reg_ex = re.compile('.*\/HCTSA_(.*)_N_70_100_reduced.mat')
def plot_arr_dendrogram(abs_corr_array,names,max_dist_cluster,measures = None):
"""
Compute dendrogram and create a plot plotting dendrogram and abs_corr_array
Parameters:
----------
abs_corr_array : ndarray
array containing the correlation matrix
names : list
list of strings containing the names of the operations in abs_corr_array in the
corresponding order.
max_dist_cluster : float
Maximum distance in the clusters
measures : ndarray (n_measures x abs_corr_array.shape[0])
Array containing measures to be plotted on top of the matrix. Positions corresponding positions
of operations in abs_corr_array.
Returns:
--------
index : list
list of indices used to reorder the correlation matrix
"""
figsize=(18,12)
#figsize=(46.81,33.11)
rect_measures = [0.25,0.8075,0.5,0.15]
rect_dendro = [0.755,0.05,0.15,0.75]
rect_matrix = [0.25,0.05,0.5,0.75]
rect_color = [0.92,0.05,0.02,0.75]
# Compute and plot dendrogram.
fig = plt.figure(figsize=figsize)
axdendro = fig.add_axes(rect_dendro)
corr_linkage = idtop.calc_linkage(abs_corr_array)[0]
corr_dendrogram = hierarchy.dendrogram(corr_linkage, orientation='left')
#axdendro.set_xticks([])
axdendro.set_yticks([])
axdendro.axvline(max_dist_cluster,ls='--',c='k')
# Plot distance matrix.
axmatrix = fig.add_axes(rect_matrix)
index = corr_dendrogram['leaves']
abs_corr_array = abs_corr_array[index,:]
abs_corr_array = abs_corr_array[:,index]
# -- plot the correlation matrix
im = axmatrix.matshow(abs_corr_array, aspect='auto', origin='lower',vmin=0,vmax=1)
axmatrix.set_xticks([])
axmatrix.set_yticks(range(len(index)))
#axmatrix.set_yticklabels(np.array(names)[index],fontsize=5)
axmatrix.set_yticklabels(np.array(names)[index])
# Plot colorbar.
axcolor = fig.add_axes(rect_color)
plt.colorbar(im, cax=axcolor)
# Plot the quality measures
axmeasure = fig.add_axes(rect_measures)
axmeasure.xaxis.set_ticklabels([])
axmeasure.scatter(np.arange(0,measures.shape[-1])+0.5,measures[0,index])
axmeasure.set_xlim([0,measures.shape[-1]])
axmeasure.set_ylabel('problems calculated')
axmeasure.yaxis.label.set_color('b')
[label.set_color('b') for label in axmeasure.get_yticklabels()]
axmeasure2 = axmeasure.twinx()
axmeasure2.plot(np.arange(0,measures.shape[-1])+0.5,measures[1,index],color='r')
axmeasure2.set_xlim([0,measures.shape[-1]])
[label.set_color('r') for label in axmeasure2.get_yticklabels()]
axmeasure2.set_ylabel('z-scored avg u-stat')
axmeasure2.yaxis.label.set_color('r')
# -----------------------------------------------------------------
# -- calculate and plot clusters ----------------------------------
# -----------------------------------------------------------------
#cluster_ind = hierarchy.fcluster(link_arr, t=cluster_t, criterion=cluster_criterion)
cluster_ind = hierarchy.fcluster(corr_linkage, t = max_dist_cluster, criterion='distance')
# -- plot delimiters for measures
cluster_bounds = np.hstack((-1,np.nonzero(np.diff(cluster_ind[index]))[0],abs_corr_array.shape[0]-1))+1
for bound in cluster_bounds:
axmeasure.axvline(bound,linestyle='--',color='k')
# -- calculate the locations for the cluster squares
patch_bounds = cluster_bounds - .5
patch_sizes = np.diff(patch_bounds)
cluter_square_params = tuple(((patch_bounds[i],patch_bounds[i]),patch_sizes[i],patch_sizes[i]) for i in range(len(patch_sizes)))
for cluster_square_param in cluter_square_params:
axmatrix.add_patch(mpl.patches.Rectangle(cluster_square_param[0],cluster_square_param[1],cluster_square_param[2],fill=0,ec='w',lw=2))
# -----------------------------------------------------------------
# -- calculate and plot best features -----------------------------
# -----------------------------------------------------------------
best_features_marker = []
for (i,j) in zip(cluster_bounds[:-1],cluster_bounds[1:]):
measures_dendr = measures[1,index]
best_features_marker.append(i+np.argmin(measures_dendr[i:j]))
axmatrix.scatter(best_features_marker,best_features_marker,color='w')
axmatrix.set_xlim([-0.5,abs_corr_array.shape[0]-0.5])
axmatrix.set_ylim([-0.5,abs_corr_array.shape[0]-0.5])
[(text.set_color('k'),text.set_weight('bold')) for i,text in enumerate(axmatrix.get_yticklabels()) if i in best_features_marker]
return index
# -- Load the data all_classes_avg = np.load(all_classes_avg_out_path) op_id_good = np.load(op_id_good_path) # -- Mask NaN entires all_classes_avg_good = np.ma.masked_invalid(all_classes_avg[:,op_id_good]) # -- load a reference HCTSA_loc.mat containing all op_ids import modules.misc.PK_matlab_IO as mIO op_ref_HCTSA_path = '/home/philip/work/OperationImportanceProject/results/done/HCTSA_Beef.mat' op, = mIO.read_from_mat_file(op_ref_HCTSA_path,['Operations'],is_from_old_matlab = True) max_feat = 50 # -- calculate the correlation abs_corr_array,sort_good_ind,all_classes_avg_good_norm = idtop.calc_perform_corr_mat(all_classes_avg_good,norm='z-score', max_feat = max_feat) # -- save the op id's in order of performance (first entry = best performance) np.save(op_id_order_path,op_id_good[sort_good_ind]) # -- sort the permutation vector that would sort the data array containing the good operations only np.save(sort_good_ind_path,sort_good_ind) # -- extract the top feature names names = hlp.ind_map_subset(op['id'], op['name'], op_id_good[sort_good_ind][:max_feat]) # -- Calculate the measures to be plotted problems_succ = (~all_classes_avg_good[:,sort_good_ind[:max_feat]].mask).sum(axis=0) u_stat_mean = all_classes_avg_good_norm[:,sort_good_ind[:max_feat]].mean(axis=0)
