I am doing my PhD in data mining and I want to start writing my thesis. Is there any acceptable percentage of similarities between the final thesis and the used published research to create the final thesis?
For example, one of my research papers is published by IEEE as full research paper and at the same time I extended that paper and got published with a journal. Now, I plan to include them in my thesis and I almost ran out of phrases and words to describe the work without having duplication from the two works.