Recent trends in structure and content of global knowledge spaces present new challenges to the field of Knowledge Discovery. Very large, highly structured repositories are increasingly replacing smaller, flat information spaces. Such repositories are often filled with multimedia documents, including image, audio and video data. This publication briefly outlines the underlying trends and discus...

Personal Learning Environments (PLEs) are gradually gaining ground over traditional Learning Management Systems (LMS) by facilitating the lone or collaborative study of user-chosen blends of content and courses from heterogeneous sources, including Open Educational Resources (OER). Our work is focused on the social aspect of PLEs, and particularly on live interactions between learners, real-tim...

We have built an HTTP based resource discovery system called Discover that provides a single point of access to over 500 WAIS servers. Discover provides two key services: query re nement and query routing. Query re nement helps a user improve a query fragment to describe the user's interests more precisely. Once a query has been re ned and describes a manageable result set, query routing automa...

The introduction of 3G wireless communication systems, together with the invasive distribution of digital images in mobile devices and the growing concern on their originality triggers an emergent need of authenticating images received by unreliable channels, such as public Internet and wireless networks. To meet this need, a content-based image authentication scheme that is suitable for an ins...

Recent papers have shown that, in contrast to ―the Long Tail‖ theory, movie sales remain concentrated in a small number of hits. These papers have argued that concentrated sales can be explained, in part, by heterogeneity in quality and increasing returns from social effects. Our research analyzes an additional explanation: how incomplete information may skew sales patterns. We use the movie br...

Single protein biomarkers measured with antibody-based affinity assays are the basis of molecular diagnostics in clinical practice today. There is great hope in discovering new protein biomarkers and combinations of protein biomarkers for advancing medicine through monitoring health, diagnosing disease, guiding treatment, and developing new therapeutics. The goal of high-content proteomics is t...

Peer to peer (p2p) file sharing protocol and ad hoc wireless routing protocol shares many intriguing similarities even though they operate on a totally different level of a network. With the popularity of p2p application for resource sharing and the availability of resources has motivated the researchers to examine the potentials of p2p applications in a dynamic environment. With the success of...

ABSTRACT A Content Dis overy System (CDS) enables ontent onsumers to dis over ontent published by ontent providers via a set of ontent resolvers. Existing solutions to CDS systems have diÆ ulties in a hieving both ri h fun tionality and s alability. In this paper, we present a distributed and s alable approa h based on Rendezvous Points (RPs) that eÆ iently supports exible sear h of dynami onte...

Many publicly available databases exist for managing materials scientific data. These databases contain information from a wide variety of work, and the information is typically encoded in some proprietary format aimed at highlighting the goals of their particular backgrounds and purposes. In order to accelerate the rate at which new materials are discovered, these databases must be federated t...

Open Hypermedia Systems (OHS) aim to provide efficient dissemination, adaptation and integration of hyperlinked multimedia resources. Content available in Peer-to-Peer (P2P) networks could add significant value to OHS provided that challenges for efficient discovery and prompt delivery of rich and up-to-date content are successfully addressed. This paper proposes an architecture that enables th...