Computer Science – Computation and Language
Scientific paper
2000-07-13
Proceedings of the Second International Conference on Language Resources and Evaluation, pp. 807-814, Paris: European Language
Computer Science
Computation and Language
8 pages, 10 figures
Scientific paper
The multidimensional, heterogeneous, and temporal nature of speech databases raises interesting challenges for representation and query. Recently, annotation graphs have been proposed as a general-purpose representational framework for speech databases. Typical queries on annotation graphs require path expressions similar to those used in semistructured query languages. However, the underlying model is rather different from the customary graph models for semistructured data: the graph is acyclic and unrooted, and both temporal and inclusion relationships are important. We develop a query language and describe optimization techniques for an underlying relational representation.
Bird Steven
Buneman Peter
Tan Wang-Chiew
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