Link Discovery

Dear All

I've started studying about web of data since a few months ago and studied
its papers ,I'm interested in Link Discovery especially owl:SameAs
link,could you suggest some good resources about this field?
what are the current algorithms for discovering same entities in different
datasets?
for example there are 10,000 owl:sameas link between dbpedia and new york
times dataset!
I want to know with which algorithm they were discovered
surely it must be a automated record linkage algorithm!
How can I evaluate my algorithm and compare it with others?
I like to know more about this issue,If it's possible please help me.

Best Regard