def build_all_names_int(all_names_path = "../data/persons"):
	"""
	Read the values from the file and build a (person name -> integer) dictionary mapping.
	"""
	cnt = 0
	N_map = {}
	with open(all_names_path, "r") as f:
		for line in f:
			name = line.strip().split("\t")[0]
			N_map[name] = cnt
			cnt +=1 
	return N_map