Dear EPPI team

I just have an enquiry on the “similarity threshold” values and how they work.

I know that 1:00 equals to 100% similarity, can you explain to me what the system is exactly comparing?

I've already selected mark automatically button, but I came up with very limited marked duplicates, so I adjusted the similarity threshold and I put a value of 0.90 to get more marked duplicates. I have some concerns of the possibility to miss not duplicate references.

Could you please  advise me what to do?

Thanks

Afnan