On Extracting Information from Semi-structured Deep Web Documents

Abstract

Some software agents need information that is provided by some web sites, which is difficult if they lack a query API. Information extractors are intended to extract the information of interest automati cally and offer it in a structured format. Unfortunately, most of them rely on ad-hoc techniques, which make them fade away as the Web evolves. In this paper, we present a proposal that relies on an open catalogue of features that allows to adapt it easily; we have also devised an optimi sation that allows it to be very efficient. Our experimental results prove that our proposal outperforms other state-of-the-art proposals.