Vocabularies Service KNAVE-II

Abstract: KNAVE-II is a system for visualization and exploration of large amounts of time-oriented clinical data and of multiple levels of clinically meaningful abstractions derivable from these data. KNAVE-II uses a distributed temporal-abstraction architecture that integrates a set of knowledge services, each interacting with a domain-specific knowledge source, a set of data-access services, each interacting with a clinical data source, and a computational service for deriving knowledge-based abstractions of the data. Care providers are often overwhelmed by the amount of time-oriented data associated with patient records, such as those of chronic patients. Providing visualization of the data and of their clinically meaningful interpretations (abstractions), and a capability to explore both, has multiple benefits for clinical care, research, and quality assessment. We describe a system for interactive visualization and exploration of time-oriented clinical data that uses a distributed temporal-abstraction mediator (Figure 1). The mediator integrates data services, knowledge services, and a knowledge-based temporal abstraction service1. The system extends our work on visualization of time-oriented clinical information2. Temporal