The duplicate checking rates of HowNet and Daya are different according to the specific situation, so we can't generalize them.

Hownet duplicate checking system will intelligently compare according to the semantics and grammar of the paper, so the detection results are more accurate, and the database of Hownet duplicate checking system is relatively perfect, containing a large number of literature resources.

Daya duplicate checking system is mainly based on published papers and online articles, and the duplicate checking rate will be higher and stricter than HowNet at some moments. The advantage of Daya lies in its speed, cheapness, powerful database and strict results.

Different duplicate checking systems have different algorithms and databases, so the duplicate checking results will be different. For the first draft and intermediate draft of the paper, it is suggested to use regular free duplicate checking software such as paperfree and papertime for testing, and for the final draft, use the duplicate checking system required by schools or institutions to ensure that the paper meets academic requirements.