Catálogo de publicaciones - revistas

<jats:p>The Informedia Experience-on-Demand system uses speech, image, and natural language processing combined with GPS information to capture, integrate, and communicate personal multimedia experiences. This paper discusses in initial prototype of the EOD system.</jats:p>

<jats:p>Effective collaboration in fast-changing environment can put great dem ands on a collaborator's time. Therefore, information retrieval and filtering tools for these environments should impose as little on that time as possible. Not only should they exclude as many irrelevant documents as possible from those presented to the user (to avoid the time wasted sorting through and reading those documents), they should also minimize the user's effort in characterizing his or her information needs. The goal of the Task-based Information Distribution Environment (TIDE) system is to achieve these objectives by explicitly representing each collaborator's current task and using those representations to deliver documents that meet the information needs implied by those tasks. It does this by treating information gathering as a diagnosis problem, in which the situation (i.e., the current state of beliefs about various questions related to a task) leads probabilistically to test that will provide the most evidence toward reaching a diagnosis (i.e., a description of the documents most likely to be useful to that task). It encodes tasks as nodes in a Bayesian network, and computes document descriptions based on the probabilistic relationship among tasks and their corresponding information requirements.</jats:p>

<jats:p>The inegrated synchronous and asynchronous collaboration (ISAAC) project [1] is constructing a communication and collaboration system to bridge traditional workgroup barriers of time and space. Possible applications include military command and control, corporate real-time collaboration, and distributed teams of research scientists. Thus, this system must host the widest possible range of applications, and must run on heterogeneous hardware.</jats:p> <jats:p>ISAAC incorporates real-time (synchronous) collaboration technologies developed by the Habanero® project [2,3] at the National Center for Supercomputing Applications at the University of Illinois Urbana-Champaign, with asynchronous extensions. ISAAC research is aimed at moving information between synchronous and asynchronous modes. ISAAC's session capture conceptually transforms a real-time multiple tool collaboration into multimedia document, which can be analyzed and reused by other programs. Automated segmentation and indexing of captured audio and videoteleconference traffic adds further information.</jats:p>

<jats:p> This paper describes the <jats:italic>Intermediary Architecture</jats:italic> , a middleware architecture which interposes distributed object services between Web client and server. The architecture extends current Web architectures with a new kind of plug-in, making a new colleciton of Web applications easier to develop. Example services including Web annotations and Web performance monitoring are described. </jats:p>

<jats:p>Several distributed testing, control and collaborative applications are reactive or event driven in nature. Such applications can be structured as a set of handlers that react to events and that in turn can trigger other events. We have developed an application building toolkit that facilitates development of such applications. Our system is based on the concept of Mobile Streams. Applications developed in our system are dynamically extensible and re-configurable and our system provides the application designer a mechanism to control extension and re-configuration. We describe our system model and give examples of its use.</jats:p>