import csv
csv.field_size_limit(1000000000)
papers = {}
tsvfile = open('mission.facet.2.tsv', 'rb')
tsvreader = csv.DictReader(tsvfile, delimiter='\t')
for row in tsvreader:
    # dictionaryにTitleとAbstractを結合させたものを格納
    # キーは論文ID
    papers[row["_N"]] = row["TI"] + " " + row["AB"]