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[2]	J. Ferreiros, R. San Segundo, F. Fernández, L.F. D'Haro, V. Sama, R. Barra, and P. Mellén. New word-level and sentence-level confidence scoring using graph theory calculus and its evaluation on speech understanding. In Proc. Interspeech, pages 3377-3380, September 2005. [ bib | .pdf ]