01832nas a2200181   4500008004100000245007000041210006900111260000900180300001400189490000600203520122600209653001801435653002901453653001701482653002101499100001301520856011701533       2006                        eng d00aExtracting information from coarser-grained data in XML documents0 aExtracting information from coarsergrained data in XML documents  c2006  a117 - 1230 v43 aXML is fast emerging as the dominant standard for representing data in the applications centric documents. While there has been a great deal of works recently proposing the extraction of relevant data of natural langujge texts, Most of the underlying works confront with the irregular structure hidden in the text. To this end, a large spectrum of wrappers has been conceived lot- web pages. Unfortunately, they cannot deal with semi-structured data and cannot still take into consideration the natural language processing. In this paper, we present a specification language to write expressive and easy extraction patterns. The specification relies on rectular expression fashion in order to write patterns by non expert users. In addition, we introduce the Xtractor wrapper for coarser-grained data (i.e. paragraphs). The Xtractor hinges on linguistic parsing. of paragraphs and applies technical and natural language dictionaries. Then it employs the extraction patterns against the pre-processed paragraphs in order to locate relevant data. The key idea of our approach consists of translating the extraction patterns to Finite State Transducers (FST) and even using the FST to build the domain specific dictionaries.10aData exchange10aFinite state transducers10aXML database10aXtractor wrapper1 aBadr, Y.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-44649098973&partnerID=40&md5=e3df331dc7e1172e6d94226eecc4f74401256nas a2200193   4500008004100000245004600041210004400087260000900131300001400140490000600154520068100160653001800841653002000859653001700879653001800896100001700914700001400931856011700945       2006                        eng d00aA new persistent labelling scheme for XML0 anew persistent labelling scheme for XML  c2006  a112 - 1160 v43 aWith the growing importance of XML in data exchange, much research has been done in providing flexible query facilities to extract data from structured XML documents. Thereby, several path indexing, labelling and numbering scheme have been proposed. However if XML data need to be updated frequently, most of these approaches will need to re-compute existing labels which is rather time consuming. The goal of the research reported in this paper is to design a persistent structural labelling scheme, namely a labelling scheme where labels encode ancestor-descendant relationships and sibling relationship between nodes but need not to be changed when the document is updated.10aData exchange10aLabeling scheme10aXML database10aXML standards1 aGabillon, A.1 aFansi, M.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-44649170430&partnerID=40&md5=b06e66fe740929637d6b20adf7fe0e9e