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Title of Journal: Knowl Inf Syst

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Abbravation: Knowledge and Information Systems

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Springer-Verlag

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10.1007/bf00700243

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0219-3116

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A spatial relationbased framework to perform visu

Authors: Giuseppe Della Penna Daniele Magazzeni Sergio Orefice
Publish Date: 2011/04/09
Volume: 30, Issue: 3, Pages: 667-692
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Abstract

The Spatial Relation Query SRQ tool is a graphical software environment supported by a SQLlike language which enables users to perform information extraction driven by the visual appearance and the spatial arrangement of the information The tool has been initially customised to work on specific application domains like web pages and geospatial data In this paper we present the theoretical formalisation of the visual information extraction VIE task and accordingly the redesign of the SRQ tool which is now a fullfeatured generalpurpose information extraction system Moreover we show a new application of the VIE framework to the analysis and visual information extraction from PDF files

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