We describe a system for interactive modification of syntax trees by intuitive editing operations on the surface string. The system has a graphical interface, where the user can move, replace, add, and in other ways modify, words or phrases. During editing, the sentence is kept grammatical, by automatically rearranging words and changing inflection, if necessary. This is accomplished by combining constraints on syntax trees with a distance measure between trees. http://hdl.handle.net/10062/17300 http://gup.ub.gu.se/records/fulltext/148337/148337.pdf

@inProceedings{Ljungl?f,Peter2011-5,
	title		= "Editing Syntax Trees on the Surface",
	booktitle	= "Nodalida'11: 18th Nordic Conference of Computational Linguistics",
	author		= "Ljunglöf, Peter",
	year		= "2011",
	url		= "http://hdl.handle.net/10062/17300 
http://gup.ub.gu.se/records/fulltext/148337/148337.pdf",
}