Abstract. Information visualization has been a research topic for many years, leading to a mature field where guidelines and practices are well established. Knowledge visualization, in contrast, is a relatively new area of research that has received more attention recently due to the interest from the business community in Knowledge Management. In this paper we present the CmapTools software as an example of how concept maps, a knowledge visualization tool, can be combined with recent technology to provide integration between knowledge and information visualizations. We show how concept map-based knowledge models can be used to organize repositories of information in a way that makes them easily browsable, and how concept maps can improve searching algorithms for the Web. We also report on how information can be used to complement knowledge models and, based on the searching algorithms, improve the process of constructing concept maps.

In applied sciences there is a tendency to rely on terminology that is either ill-defined or applied inconsistently across areas of research and application domains. Examples in information assurance include the terms resilience, robustness and survivability, where there exists subtle shades of meaning between researchers. These nuances can result in confusion and misinterpretations of goals and results, hampering communication and complicating collaboration. In this paper, we propose security-related definitions for these terms. Using this terminology, we argue that research in these areas must consider the functionality of the system holistically, beginning with a careful examination of what we actually want the system to do. We note that much of the published research focuses on a single aspect of a system -availability -as opposed to the system's ability to complete its function without disclosing confidential information or, to a lesser extent, with the correct output. Finally, we discuss ways in which researchers can explore resilience with respect to integrity, availability and confidentiality.

specification, management, conflict resolution, and enforcement To increase the assurance with which agents can be deployed in of policies within the specific contexts established by complex operational settings, we have been developing the KAoS policy organizational structures. Following a description of these and domain services. In conjunction with Nomads strong mobility capabilities (section 2), we will conclude with a brief summary of and safe execution features, KAoS services and tools allow for the current applications (section 3) and a brief outline of future specification, management, conflict resolution, and enforcement directions (section 4). of DAML-based policies within the specific contexts established by complex organizational structures. In this paper, we will KAoS AND NOMADS POLICY AND discuss results, issues, and lessons learned in the development of DOMAIN SERVICES these representations, tools, and services and their use in militaryKAoS is a collection of componentized agent services compatible and space applications with several popular agent frameworks, including Nomads [27], the DARPA CoABS Grid [18], the DARPA ALP/Ultra*Log

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In this article, we describe how we augment human perception and cognition through Sol, an agent-based framework for distributed sensemaking. We describe how our visualization approach, based on IHMC's OZ flight display, has been leveraged and extended in our development of the Flow Capacitor, an analyst display for maintaining cyber situation awareness, and in the Parallel Coordinates 3D Observatory (PC3O or Observatory), a generalization of the Flow Capacitor that provides capabilities for developing and exploring lines of inquiry. We then introduce the primary implementation frameworks that provide the core capabilities of Sol: the Luna Software Agent Framework, the VIA Cross-Layer Communications Substrate, and the KAoS Policy Services Framework. We show how policy-governed agents can perform much of the tedious high-tempo tasks of analysts and facilitate collaboration. Much of the power of Sol lies in the concept of coactive emergence, whereby a comprehension of complex situations is achieved through the collaboration of analysts and agents working together in tandem. Not only can the approach embodied in Sol lead to a qualitative improvement in cyber situation awareness, but its approach is equally relevant to applications of distributed sensemaking for other kinds of complex high-tempo tasks.

Electronic concept mapping tools empower experts to play an active role in the knowledge capture process, and provide a medium for building richly connected multimedia knowledge models-sets of linked concept maps and resources about a particular domain. Knowledge models are intended to be used as a means for sharing knowledge among humans, not as carefully-crafted knowledge bases upon which machines will be performing inference. However, users must still confront the questions of what to include in a concept map and which concept maps to include in a knowledge model. This paper describes ongoing research on methods to provide content-based support to users as they extend concept maps by adding concepts and propositions, and as they select topics for new maps. The goal is to provide scaffolding for experts as they build their own concept maps, link their maps to others', and decide how to extend their knowledge models. The paper presents three approaches which start from a concept map under construction and mine related information-both from prior concept maps, and from the web-to propose information to aid the user's knowledge capture and knowledge construction. The paper begins with a brief summary of the concept mapping process and the CmapTools concept mapping software. It then presents three types of implemented suggesters, to suggest concepts, propositions, concept maps, and new topics to aid experts using the CmapTools, and describes preliminary experiments to assess their performance. It closes with a discussion of next steps for testing and refining these methods.