document: Exploiting the deep web with DynaBot : matching , probing , and ranking We present the design of Dynabot , a guided Deep Web discovery system . Dynabot 's modular architecture supports focused crawling of the Deep Web with an emphasis on matching , probing , and ranking discovered sources using two key components : service class descriptions and source-biased analysis . We describe the overall architecture of Dynabot and discuss how these components support effective exploitation of the massive Deep Web data available .
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