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Exploiting Data Semantics to Discover, Extract, and Model Web Sources

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Executive Summary

The authors describe DEIMOS, a system that automatically discovers and models new sources of information. The system exploits four core technologies developed by their group that makes an end-to-end solution to this problem possible. First, given an example source, DEIMOS finds other similar sources online. Second, it invokes and extracts data from these sources. Third, given the syntactic structure of a source, DEIMOS maps its inputs and outputs to semantic types. Finally, it infers the source's semantic definition, i.e., the function that maps the inputs to the outputs.

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