A brief survey of web data extraction tools
ACM SIGMOD Record
Proceedings of the 27th International Conference on Very Large Data Bases
Semi-Automatic Wrapper Generation for Commercial Web Sources
Proceedings of the IFIP TC8 / WG8.1 Working Conference on Engineering Information Systems in the Internet Context
Extracting structured data from Web pages
Proceedings of the 2003 ACM SIGMOD international conference on Management of data
Adding Physical Optimization to Cost Models in Information Mediators
ICEBE '05 Proceedings of the IEEE International Conference on e-Business Engineering
The denodo data integration platform
VLDB '02 Proceedings of the 28th international conference on Very Large Data Bases
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Web applications have become an invaluable source of information for many different vertical solutions, but their complex navigation and semistructured format make their information difficult to retrieve. Web Automation and Extraction systems are able to navigate through web links and to fill web forms automatically in order to get information not directly accessible by a URL. In these systems, the main optimization parameter is the time required to navigate through the intermediate pages which lead to the desired final pages. This paper proposes a series of techniques and algorithms that improves this parameter by basically storing historical information from previous queries, and using it to make the browser manager preload an adequate subset of the whole navigational sequence on a specific browser, before the following query is executed. These techniques also handle which sequences are the most common, thus being the ones which are preloaded more often.