def ratio_of_typed_subjects(D,
edge_labels=np.empty(0),
stats=dict(),
print_stats=False):
"""
(1) number of all different typed subjects
(2) ratio of typed subjects
"""
if edge_labels is None or edge_labels.size == 0:
edge_labels = np.array([D.ep.c0[p] for p in D.get_edges()])
# ae98476863dc6ec5 = http://www.w3.org/1999/02/22-rdf-syntax-ns#type
rdf_type = hash('ae98476863dc6ec5')
S_C_G = GraphView(D, efilt=edge_labels == rdf_type)
S_C_G = np.unique(S_C_G.get_edges()[:, 0])
if print_stats:
print("number of different typed subjects S^{C}_G: %s" % S_C_G.size)
S_G = GraphView(D, vfilt=D.get_out_degrees(D.get_vertices()))
if print_stats:
print("ratio of typed subjects r_T(G): %s" %
(float(S_C_G.size) / S_G.num_vertices()))
stats['typed_subjects'], stats['ratio_of_typed_subjects'] = S_C_G.size, (
float(S_C_G.size) / S_G.num_vertices())
return S_C_G
def number_of_classes(D,
edge_labels=np.empty(0),
stats=dict(),
print_stats=False):
"""counts the number of different classes"""
if edge_labels is None or edge_labels.size == 0:
edge_labels = np.array([D.ep.c0[p] for p in D.get_edges()])
# ae98476863dc6ec5 = http://www.w3.org/1999/02/22-rdf-syntax-ns#type
rdf_type = hash('ae98476863dc6ec5')
C_G = GraphView(D, efilt=edge_labels == rdf_type)
C_G = np.unique(C_G.get_edges()[:, 1])
if print_stats:
print("number of different classes C_G: %s" % C_G.size)
stats['distinct_classes'] = C_G.size
return C_G