@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 }