@article {Sokolova2011Learning,
	title = {Learning opinions in user-generated Web content},
	journal = {Natural Language Engineering},
	volume = {17},
	number = {4},
	year = {2011},
	month = {mar},
	pages = {541-567},
	pdf = {http://rali.iro.umontreal.ca/rali/sites/default/files/publis/SokolovaNLE2011.pdf},
	author = {Marina Sokolova and Guy Lapalme}
}
