The coverage and recency of the major World Wide Web search engines was analyzed, yielding some surprising results. The coverage of any one engine is significantly limited: No single engine indexes more than about one-third of the "indexable Web," the coverage of the six engines investigated varies by an order of magnitude, and combining the results of the six engines yields about 3.5 times as ...

Today’s Web depends on a particular pact between sites and users: sites invest capital and labor to create and market a set of features, and users gain access to these features by giving up control of their data (photos, personal information, creative musings, etc.). This paper imagines a very different Web ecosystem, in which users retain control of their data and developers can justify their ...

Zheng Wang Jon Crowcroft Department of Computer Science, University College London London WC1E 6BT, United Kingdom Abstract This paper considers the use of prefetching in WWW for reducing perceived latency. We rst look at a number of basic issues and tradeo in prefetching. Our analysis shows that, unless the tra c is very light or the prefetching e ciency is very high, statistical prefetching m...

The World Wide Web has become, over the last years, a major source of information, and at the same time a significant platform for commerce. Both aspects make it an interesting target for data mining applications. In this survey, we will discuss different facets of data mining on the web, and illustrate its methods by typical application areas. These areas will be highlighted in more detail in ...

The lives of most inhabitants of industrialized countries, as well as some in unindustrialized countries, have been changed forever by the advent of the World Wide Web. Although this transformation has had some downsides—for example, easier access to pornography and gambling and the ease with which people with destructive ideas can propagate those ideas to others—on balance, the changes have be...

The HTTP protocol, as currently used in the World Wide Web, uses a separate TCP connection for each le requested. This adds signi cant and unnecessary overhead, especially in the number of network round trips required. We analyse the costs of this approach and propose simple modi cations to HTTP that, while interoperating with unmodi ed implementations, avoid the unnecessary network costs. We h...

With more data repositories constantly being published on the Web, choosing appropriate data sources to interlink with newly published datasets becomes a non-trivial problem. It is necessary to choose both the repositories to link to and the relevant subsets of these repositories, which contain potentially matching individuals. In order to do this, detailed information about the content and str...

Semantic Web Mining aims at combining the two fast-developing research areas Semantic Web and Web Mining. The idea is to improve, on the one hand, the results of Web Mining by exploiting the new semantic structures in the Web; and to make use of Web Mining, on the other hand, for building up the Semantic Web. This paper gives an overview of where the two areas meet today, and sketches ways of h...