Semi-Automatic Semantic Annotation for Hidden-Web Tables

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Semi-Automatic Semantic Annotation for Hidden-Web
Tables

• Cui Tao David W. Embley
• Data Extraction Research Group
• Department of Computer Science
• Brigham Young University

Supported by NSF
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Semantic Annotation

• The Hidden Web
• Hidden behind forms
• Hard to query

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Semantic Annotation

• The Hidden Web
• Hidden behind forms
• Hard to query

to find the protein and the animo-acids
information for gene cdk-4"
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Semantic Annotation

• The Hidden Web
• Hidden behind forms
• Hard to query
• Semantic annotation
• Machine-understandable
• Publicly accessible

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System Overview

• Initial semantic annotation
• Manually annotate a sample page
• With respect to a selected ontology
• Table interpretation
• Automatic
• Tables from hidden web pages
• Final semantic annotation
• Automatic
• Annotate interpreted tables

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Initial Semantic Annotation

• SMORE Semantic Markup, Ontology and RDF Editor
  Maryland information and network dynamics lab

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(No Transcript)
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Table Interpretation

• Table interpretation
• Locate label and value
• Pair label-value pairs
• Remember path
• TISP Table Interpretation by Sibling Pages

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TISP
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Interpretation Technique Sibling Page Comparison
Same
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Interpretation Technique Sibling Page Comparison
Almost Same
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Interpretation Technique Sibling Page Comparison
Different
Same
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Interpretation Technique Sibling Page Comparison
Structure Pattern of a Table
Label Path Identification.Gene model(s).Gene
Model
Xpath html1//table3/tr1/td2/table1/tr
6/td2/table1/tr2/td1
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Annotation
Protein Name
Protein Name
Protein Name
Protein Name
Protein Name
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Annotation Split
Nucleotide Size
Nucleotide Size
Nucleotide Size
Nucleotide Size
Nucleotide Size
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Annotation Merge
Protein Information
Protein Information
Protein Information
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AnnotationUnion
Name
Name
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AnnotationSelection
Molecular Function
Molecular Function
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Generated RDF Annotation
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Querying Annotated Data
to find the protein and the animo-acids
information for gene cdk-4"
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Summary

• Semi-automatic semantic annotation for hidden web
  tables
• Facilitate large-scale annotation to the web