@InProceedings{WYQS11,  
  	author =      {Y. Wang and B. Yang and L. Qu and M. Spaniol and G. Weikum},  
  	title =       {Harvesting {F}acts from {T}extual {W}eb {S}ources by {C}onstrained {L}abel {P}ropagation},  
  	booktitle =   {Proceedings of the $20^{th}$ {ACM} {C}onference on {I}nformation and {K}nowledge {M}anagement ({CIKM}), {G}lasgow, {S}cotland, {UK}, {O}ctober 24-28, 2011},
	pages =       {837-846},  
	year =        2011
}