AttributeError: 'module' object has no attribute 'polyglot_nouns

[mkshadown]

File "doc_sim.py", line 105, in <module> estimator = pickle.load(open(args.estimator,"rb")) File "/usr/lib/python2.7/pickle.py", line 1384, in load return Unpickler(file).load() File "/usr/lib/python2.7/pickle.py", line 864, in load dispatch[key](self) File "/usr/lib/python2.7/pickle.py", line 1096, in load_global klass = self.find_class(module, name) File "/usr/lib/python2.7/pickle.py", line 1132, in find_class klass = getattr(mod, name) AttributeError: 'module' object has no attribute 'polyglot_nouns'

Would you help me?
I'm getting this message when I run the doc_sim.py code.