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Study on Data Annotation of Deep Web Data Integration System

Author: ChangYong
Tutor: YuanFang
School: Hebei University
Course: Applied Computer Technology
Keywords: Deep Web Data labels Domain knowledge Decision Tree
CLC: TP393.09
Type: Master's thesis
Year: 2009
Downloads: 17
Quote: 0
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Abstract


With the deepening of the network environment information retrieval research , the study of Deep Web data integration system by more and more people's attention. Deep Web and Surface Web corresponding to the concept, it is means that can not be mainstream search engine to dynamically generated according to the user who submit the keyword as Web data information . The data marked as an important part of the Deep Web Data Integration System , its main job is marked data extraction query returns results , making it the semantic information , so that the computer can recognize , can handle . Based on the analysis on the basis of Deep Web site search results page and its data manifestations , results mode , the object model of the label field and give their formal representation , and gives a description of the data dimension thinking . This article will query returns Deep Web site the results content is divided into three types : (1) the content contains domain knowledge ; ( 2 ) the content does not contain domain knowledge ; ( 3 ) of the containing domain knowledge , the rest of the content does not contain the domain knowledge mixed type . Two basic annotation method used for these three types : domain knowledge tagging methods and decision tree marked , they separate and joint Note these three types . In order to avoid the repetition of the same Deep Web site query results data processing , the front two basic annotation method based on the use of a template marking method . At the same time using two methods of assisted annotation : the entity tagging methods and heuristic rules tagging method . These two methods is used to test and correct other marking methods marked results . This paper describes the various labeling methods used to do , made ??a presentation model of the annotation method and gives a formal representation to do a specific analysis of the associated problems in a variety of annotation method processing . Experimental results show that the annotation method used in this paper has good results data marked effect .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > The application of computer network
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