Read e-book online Temporal Information Systems in Medicine PDF

By Carlo Combi, Elpida Keravnou-Papailiou, Yuval Shahar

The potent and effective use of knowledge structures in health and wellbeing care enterprises and prone is an important portion of the standard of lifestyles around the globe. The modeling of time has attracted curiosity from a few examine groups, each one addressing points from its particular sphere of pursuits. The database platforms group is drawn to the right way to shop, preserve, and question time-oriented information. the factitious Intelligence (AI) group is attracted to formal theories of time, temporal logics, temporal constraints and temporal reasoning innovations. the bogus Intelligence in medication (AIM) neighborhood is drawn to the wider matters inquisitive about reasoning approximately time-oriented facts: specifically, the consequences of temporal reasoning on scientific projects resembling prognosis, tracking, and longitudinal guideline-based care.

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The modeling of time for the management of, or the reasoning about time-oriented clinical data, requires several basic choices to be made, depending on the needs of the domain. 1 Time Domain The time domain consists of the set of primitive time entities used to represent the concept of time. It allows one to define and interpret all the other time-related concepts. According to [184], a time domain is a pair (T ; ≤), where T is a non-empty set of time instants and ≤ is a total order on T . , isomorphic to natural numbers).

1 Tense Logics It is useful to look at the basis for some of the early work in temporal reasoning. We know that Aristotle was interested in the meaning of the truth value of future propositions [330]. , extended Aristotle’s inquiries by constructing what is known as the master argument. It can be reconstructed in modern terms as follows [330]: 1. , what is past and true is necessarily true thereafter). 2. , what was once possible does not become impossible). From these two assumptions, Diodorus concluded that nothing is possible that neither is true nor will be true, and that therefore every (present) possibility must be realized at a present or future time.

2 Modeling Temporal Concepts 17 in some temporal context if its duration is at least equal to the time unit associated with the particular temporal context. Care needs to be taken in associating these concepts to clinical entities, such as symptoms, therapies, and pathologies: a myocardial infarction, for example, could be considered an instantaneous event, within the overall clinical history of the patient, or an interval-based occurrence, if observed during an ICU staying. 3 Semantic Relations between Temporal Entities Other, more complex, features of temporal entities and of their occurrences need to be suitably considered.

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