Shay B Cohen author Karl Stratos author Michael Collins author Dean P Foster author Lyle Ungar author 2012-07 text Haizhou Li editor Chin-Yew Lin editor Miles Osborne editor Gary Geunbae Lee editor Jong C Park editor Association for Computational Linguistics Jeju Island, Korea conference publication cohen-etal-2012-spectral https://aclanthology.org/P12-1024/ 2012-07 223 231