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Automating the Extraction of Data From Html Tables (2003)
| Content Provider | CiteSeerX |
|---|---|
| Author | Embley, David W. Tao, Cui Liddle, Stephen W. |
| Abstract | Data on the Web in HTML tables is mostly structured, but we usually do not know the structure in advance. Thus, we cannot directly query for data of interest. We propose a solution to this problem based on document-independent extraction ontologies. Our solution entails elements of table understanding, data integration, and wrapper creation. Table understanding allows us to find tables of interest within a Web page, recognize attributes and values within the table, pair attributes with values, and form records. Data-integration techniques allow us to match source records with a target schema. Ontologically specified wrappers allow us to extract data from source records into a target schema. Experimental results show that we can successfully locate data of interest in tables and map the data from source HTML tables with unknown structure to a given target database schema. We can thus "directly" query source data with unknown structure through a known target schema. |
| File Format | |
| Volume Number | 54 |
| Journal | Data & Knowledge Engineering |
| Language | English |
| Publisher Date | 2003-01-01 |
| Access Restriction | Open |
| Subject Keyword | Target Schema Data Html Table Unknown Structure Source Record Source Html Html Table Query Source Data Table Understanding Form Record Pair Attribute Experimental Result Data Integration Data-integration Technique Specified Wrapper Web Page Document-independent Extraction Ontology Target Database Schema |
| Content Type | Text |
| Resource Type | Article |
