OpenKnowledge is a peer-to-peer system for sharing knowledge and is driven by interaction models that give the necessary context for mapping of ontological knowledge fragments necessary for the interaction to take place. The OpenKnowledge system is agnostic to any specific data formats that are used in the interactions, relying on ontology mapping techniques for shimming the messages. The poten...

Companion technology supports, for instance, context-specific dialogues between a user and a computational system. We explore this technology in the context of cooperative computer-aided semantic annotation of multimedia (CASAM). Reasoning-based media interpretation exploits user input and multimedia analysis results to propose high-level media annotations (called interpretations). In this pape...

Next generation of integration systems will utilize different methods and techniques to achieve the vision of ubiquitous knowledge: Semantic Web and Web Services, Agent Technologies and Mobility. Unlimited interoperability and collaboration are the important things for almost all the areas of people life. Development of a Global Understanding eNvironment (GUN) (Kaykova et al., 2005), which woul...

Multimedia content is a central component of on-demand training and education delivered over the World Wide Web. Supporting asynchronous collaboration around educational multimedia is potentially a significant tool for delivering online educational content effectively. A multimedia annotation system tightly integrated with email provides a powerful platform on which to base such functionality. ...

Scientific research is producing and consuming large volumes of multimedia data at an ever growing rate. Data annotations are used, among others, to provide context information and enhance content management, making it easier to interpret and share data. However, raw multimedia data often needs to go through complex processing steps before it can be consumed. During these transformation process...

Cultural institutions and museums have realized that annotations contribute valuable metadata for search and retrieval, which in turn can increase the visibility of the digital items they expose via their digital library systems. By exploiting annotations created by others, visitors can discover content they wouldn’t have found otherwise, which implies that annotations must be accessible and pr...

The challenges of Personal Information Management (PIM) are proliferating with the ever-increasing availability of systems for digital multimedia information capture. Assimilating such information requires supporting appropriate user-media interaction paradigms as well as developing data models that can represent the true multi-media nature of the information. This paper examines the problem of...

This study introduces a learning environment integrating annotations with a dual-slide PowerPoint presentation for classroom learning. Annotation means a kind of additional information to emphasize the explanations for the learning objects. The use of annotations is to support the cognitive process for PowerPoint presentation in a classroom. The construction of the learning environment is based...

The amount of multimedia data available worldwide is increasing every day. There is a vital need to annotate multimedia data in order to allow universal content access and to provide content-based search-and-retrieval functionalities. Since supervised video annotation can be time consuming, an automatic solution is appreciated. We review recent approaches to content-based indexing and annotatio...