From strings to trees to strings to trees ..

Aravind K. Joshi
1994 Proceedings of the 32nd annual meeting on Association for Computational Linguistics -  
Sentences are not just strings of words (or are they ?), they have some (hierarchical) structure. This much is accepted by all grammar formalisms. But how much structure is needed? The more the sentences are like strings the less the need for structure.
doi:10.3115/981732.981737 dblp:conf/acl/Joshi94 fatcat:6wwbt3xtujflhajsek6kyz7uxe