The Semantic Web has radically changed the landscape of knowledge acquisition research. It used to be the case that a single user would edit a local knowledge base, that the user would have domain expertise to add to the system, and that the system would have a centralized knowledge base and reasoner. The world surrounding knowledge‐rich systems changed drastically with the advent of the Web, a...

In addition to establishing and maintaining knowledge spaces, cooperative knowledge organization specifically involves the structuring and adaptation of such spaces, taking into account existing materials and media. The open-source project sTeam, which is being coordinated and largely developed in Paderborn, allows the web-based establishment of an extensive document base as well as its coopera...

In this short note we give an overview of our research concerning cartography on the Web and its challenges. We present a mathematical formalism to capture the notion of map on the Web, which allows to automatize the construction of maps.

Web mining is the use of data mining techniques to automatically discover and extract information from web documents This paper summarizes the different types of web mining, and their current states of the art. Keywords—Web Mining, World Wide Web, Web Content Mining, Web Structure Mining, Web Usage Mining.

A major obstacle impeding progress on the “web of data” is content creation—a difficult, tedious, and timeconsuming task. How do we make human-scalable, user-friendly tools to enable the web of data? Content integrity is also a major concern. How do we engender confidence in results returned from the web of data? Although seemingly unrelated, we show in this paper that it is exactly their relat...

The current web is a web of linked pages. Frustrated users search for facts by guessing which keywords or keyword phrases might lead them to pages where they can find facts. Can we make it possible for users to search directly for facts? Equivalently, can we turn the web into a web of facts (instead of a web of pages containing facts)? Ultimately, can the web be a knowledgebase—a web of knowled...