Graham Cormode Lukasz Golab Flip Korn Andrew McGregor Divesh Srivastava Xi Zhang Estimating the confidence of conditional functional dependencies. 469-482 2009 SIGMOD Conference http://doi.acm.org/10.1145/1559845.1559895 conf/sigmod/2009 db/conf/sigmod/sigmod2009.html#CormodeGKMSZ09