Recent analyses of the human genome and available data about the other higher eukaryotic genomes have revealed that, in contrast to Eubacteria and Archaea, only a small fraction of the genetic material (ca 1.5%) codes for proteins. Most of genomic DNA and its RNA transcripts are involved in regulation of gene expression, which can be exerted at either the transcriptional level, controlling whet...

genes in genomic DNA. Curr. Opin. Struct. Biol. 8, 346–354 10 Stormo, G.D. (2000) Gene-finding approaches for eukaryotes. Genome Res. 10, 394–397 11 Reese, M.G. et al. (2000) Genome annotation assessment in Drosophila melanogaster. Genome Res. 10, 483–501 12 Gelfand, M.S. et al. (1996) Gene recognition via spliced sequence alignment. Proc. Natl. Acad. Sci. U. S. A. 93, 9061–9066 13 Florea, L. e...

Dividing oral histories into topically coherent segments can make them more accessible online. People regularly make judgments about where coherent segments can be extracted from oral histories. But when different people are asked to extract coherent segments from the same oral histories, they often do not agree about where such segments begin and end.

We present an analysis of parser performance on speech data, comparing word type and token frequency distributions with written data, and evaluating parse accuracy by length of input string. We find that parser performance tends to deteriorate with increasing length of string, more so for spoken than for written texts. We train an alternative parsing model with added speech data and demonstrate...