SimilarityRank
software_update 0.724 46417
bug_fix 0.660 22786
antivirus 0.618 48687
Firefox_[number] 0.606 60310
fix_bug 0.596 86697
Windows_[number] 0.593 10766
new_version 0.593 35378
OS_X 0.591 27444
new_feature 0.591 8294
free_update 0.590 97286
Antivirus 0.589 83238
iOS_[number] 0.586 66912
Windows_operate_system 0.585 79105
Ubuntu_[number] 0.584 52790
operate_system 0.582 5517
Mac_OS_X 0.581 22025
Windows_XP 0.580 20220
Windows_Vista 0.577 32920
the_late_version 0.574 25231
Internet_Explorer 0.573 18580
Windows 0.567 3136
update 0.565 386
IE7 0.565 88994
for_Windows_[number] 0.564 78382
Windows_7 0.563 12163