Questions about the repetition rate of papers?

Question

One of my conference papers has been accepted but not yet indexed. I have uploaded it on arxiv. I wrote an extended version of the thesis. According to the requirements of the journal, the duplication rate with the original conference paper should be less than 30%. I used itenticate to check the duplicates. But now there are some problems that I don't quite understand.

1. First of all, the paper with the highest repetition rate did not declare which paper it was, but gave it to a website. How should I determine it?
2. I found that the papers I uploaded on arxiv did not show up in the list. But since I'm an extended dissertation, I have a few paragraphs of text that I haven't revised, why isn't this being found? I uploaded one last year.
3. How much do I need to reduce the overall repetition rate?
4. How can I do a duplication check with my conference paper? It's not indexed online yet, and I'm wondering if my revisions are over 70%.

Thanks

Answer 1

I do not think the journal is only wanting to know if 30% of your text is the same as written in the conference article. I believe they want to know that the ideas/results you intend to present have not been published elsewhere. Does the work you already have accepted contribute less than 30% of the content or meaning of the work? This is probably not something you can measure using a comparison software, but something you need to reflect on yourself.

If the question you are asking is instead a technical question about the inner workings of the plagiarism software, ithenticate, please clarify that in the question.