Manuela Boros Wieland Eckert Florian Gallwitz Günther Görz Gerhard Hanrieder Heinrich Niemann Towards Understanding Spontaneous Speech: Word Accuracy vs. Concept Accuracy http://arxiv.org/abs/cmp-lg/9605028 1996 CoRR cmp-lg/9605028 db/journals/corr/corr9605.html#cmp-lg-9605028