def build_tag_graph(self, tagged_graph_path, threshold=None):
filename = tagged_graph_path
# def __init__(self, filename, bound_tag_dist=None, calc_tag_distance=False):
tags = Tags(filename, threshold, True)
outfilename = filename + '.tags'
tags.save_tag_freqs(outfilename)
dist_dict = tags.get_tag_dist()
tag_freq = tags.get_tag_freq()
print 'tag set with distance: %d' % len(tags.get_tag_set())
print 'tag edges with distance: %d' % len(dist_dict.keys())
nodes = []
for node in tags.get_tag_set():
nodes.append((node,tag_freq[node]))
#print str((node,tag_freq[node]))
dists = []
for key, val in dist_dict.iteritems():
dists.append(val)
max_dist, min_dist = max(dists), min(dists)
# use opposite distances as weights.
edges = []
for key, val in dist_dict.iteritems():
edges.append((key[0],key[1],(max_dist-val)/(max_dist-min_dist)))
#edges.sort(thr_fst_cmp, None, True)
self.__graph.add_nodes_from(nodes)
self.__graph.add_edges_from(edges)
self.set_corpus_size(tags.get_corpus_size())
dist_graph_path = filename + '.tags.graph'
self.save(dist_graph_path)
