@InProceedings{WiKl2009a,
AUTHOR = {Wiegand, Michael and Klakow, Dietrich},
TITLE = {The role of knowledge-based features in polarity classification at sentence level},
YEAR = {2009},
BOOKTITLE = {Proceedings of the Twenty-Second International Florida Artificial Intelligence Research Society Conference : 19 - 21 May 2009, Sanibel Island, Florida, USA},
ADDRESS = {Menlo Park, Calif},
PUBLISHER = {AAAI Press},
NOTE = {DK} }
