Web Development

Answering Table Augmentation Queries From Unstructured Lists on the Web

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Executive Summary

The authors present the design of a system for assembling a table from a few example rows by harnessing the huge corpus of information-rich but unstructured lists on the web. The authors developed a totally unsupervised end to end approach which given the sample query rows - retrieves HTML lists relevant to the query from a pre-indexed crawl of web lists, segments the list records and maps the segments to the query schema using a statistical model, consolidates the results from multiple lists into a unified merged table, and presents to the user the consolidated records ranked by their estimated membership in the target relation.

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