Classifying question as duplicate
22831
Changes to "close as duplicate" (part deux)
117496
Let the duplicate questions finder consider tags
77659
Prevent upvotes for duplicates, or carry upvotes to master question
32895
How can I avoid asking duplicate questions?
10293
How should duplicate questions be handled?
149990
Preventing misuse of question self-deletion
137347
How to ask multiple similar but different questions?
119165
Sentence Classification (Categorization)
130608
Why can we flag/vote a question on Meta as duplicate of another question which has no accepted/upvoted answers?
152605
Duplicate Low Quality Post in First Post & Late Answer - Double Flag?
71476
How to deal with duplicate answers posted long after first answer(s)
55727
Under which category I can flag the Copy-Paste answers
111647
How to find questions closed as duplicates via the Data Explorer
150539
Sorting by questions that have no answers by votes shows duplicates
10674
Avoiding asking a question that's already been asked
87274
Should I downvote a duplicate question?
100366
What is best way to find duplicate questions?