What is the edas similarity score

I would really appreciate if someone could provide an
insight in to what it really means. It seems that this
functionality is only available to chairs.

Based on the very useful comments, I am updating
this post. The score ranges from 0-100 indicating
the similarity of the article to other papers. Lesser
the better! Conference chairs use this tool for
determining paper similarities. To quote edas “High scores,
e.g., above 30, may indicate that parts of the paper
have been copied from elsewhere.” So beware!

The similarity score can be seen or located on your
edas submission next to the pdf submission and format
checks.

Link: http://ergodicthoughts.blogspot.com/2009/09/what-is-edas-similarity-score.html