Due to the high popularity of social bookmarking systems, a large amount of metadata is available. Aggregating the metadata belonging to one user results in an user profile similar to those often used in Information Filtering. This paper shows how to create user profiles from tagging data. We present the Add-A-Tag algorithm for profile construction which… (More)
This paper delivers a case study on the properties of meta-data provided by a folksonomy. We provide the background about folk-sonomies and discuss to which extend the process of creating meta-data in a folksonomy is related to the idea of emergent semantics as defined by the IFIP 2.6 Working Group on Data Semantics. We conduct experiments to analyse the… (More)
The 'SemanticLIFE' system is designed to store, manage and retrieve ones lifetime's information entities. It enables the acquisition and storage of data while giving annotations to email messages, browsed web pages, phone calls, images, contacts, life events and other resources. 'SemanticLIFE' also provides intuitive and effective search mechanism based… (More)
Although the ant metaphor has been successfully applied to routing of data packets both in wireless and fixed networks , little is yet known about its applicability to the task of query routing in peer-to-peer environments. This work presents SemAnt, an algorithm for distributed query routing based on the Ant Colony Optimization meta-heuristic. The… (More)
UMTS services integrate mobile communications and the Internet, based on a powerful and standardized service architecture. To achieve a positive user experience, careful resource planning, service and protocol design are necessary. After dealing with some fundamental issues of UMTS services, this paper presents LoL@, the Local Location Assistant. It is a… (More)
Modern Web applications are full-fledged, complex software systems. Therefore, the development of Web applications requires a methodologi-cally sound engineering approach called Web Engineering. It is not clear, however , to which extent existing solutions from relevant areas, most notably software engineering can be reused as such for the development of… (More)
This paper presents the design and evaluation of an ant-based approach to query routing in peer-to-peer networks. After pointing out how to employ the ant metaphor in peer-to-peer networks, we conduct a thorough evaluation of the impact of different settings for the configurable parameters present in ant algorithms on the performance values. In particular,… (More)
In this paper we construct adaptive user profiles from tagging data. We present and evaluate an algorithm for creating such profiles, characterizing its behavior through statistical analysis.