Google: “We’re Not Doing a Good Job with Structured Data”
During a talk at the New England Database Day conference at the Massachusetts Institute of Technology, Google's Alon Halevy admitted that the search giant has "not been doing a good job" presenting the structured data found on the web to its users. By "structured data," Halevy was referring to the databases of the "deep web" - those internet resources that sit behind forms and site-specific search boxes, unable to be indexed through passive means.
Halevy, who heads the "Deep Web" search initiative at Google, described the "Shallow Web" as containing about 5 million web pages while the "Deep Web" is estimated to be 500 times the size. This hidden web is currently being indexed in part by Google's automated systems that submit queries to various databases, retrieving the content found for indexing. In addition to that aspect of the Deep Web - dubbed "vertical searching" - Halevy also referenced two other types of Deep Web Search: semantic search and product search.
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