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We propose a dual hash tables algorithm which can realize the durable top-k search. Two hash tables are constructed to keep the core information, such as score and time in the inverted lists. We use the key-value relationships between the two hash tables to calculate the scores which measure the correlations between a keyword and documents, and search the versioned objects that are consistent in the...
Previous wrappers of information extraction are mostly set for the web page which has one information block, so they are unable to deal with the multiple information blocks web page. Because of the adapt ability of the above mentioned shortcomings, this paper proposes a multiple wrappers information extraction method based on tree model. It will generate a wrapper for every block using the Tree-Align...
Internet topology measurement is an important part of Network measurement. Nowadays, traceroute probing method is widely used to obtain the original route data, and the IP alias resolution technique is to identify IP addresses belonging to the same router for constructing accurate Internet maps. However, there are thousands of IP addresses only in a region topology exploration, while current alias...
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