Download e-book for iPad: Abductive Inference Models for Diagnostic Problem-Solving by Yun Peng

By Yun Peng

ISBN-10: 1441986820

ISBN-13: 9781441986825

ISBN-10: 1461264502

ISBN-13: 9781461264507

Making a analysis whilst anything is going mistaken with a common or m- made approach may be tough. in lots of fields, reminiscent of medication or electr- ics, a protracted education interval and apprenticeship are required to develop into a talented diagnostician. in this time a beginner diagnostician is requested to assimilate a large number of wisdom in regards to the category of platforms to be clinically determined. against this, the beginner is simply not taught the way to cause with this data in arriving at a end or a analysis, other than maybe implicitly via ease examples. this could appear to point out that a few of the crucial facets of diagnostic reasoning are one of those intuiti- established, logic reasoning. extra accurately, diagnostic reasoning will be labeled as a kind of inf- ence often called abductive reasoning or abduction. Abduction is outlined to be a strategy of producing a believable reason behind a given set of obs- vations or evidence. even if pointed out in Aristotle's paintings, the examine of f- mal points of abduction didn't relatively begin till a couple of century ago.

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These nonspecific manifestations can be caused by numerous medical diseases that are distributed across multiple medical specialties. Examples of possible diagnoses of a patient with dizziness include: orthostatic hypotension secondary to drugs (orthostatic hypotension is a fall in blood pressure upon standing up, and can be a side effect of certain medications, among other things); heart disease, such as an irregular heart beat or an abnormal heart valve; basilar migraine: headache due to painfully dilated blood vessels which supply blood to the balance centers of the brain; inner ear diseases: these interfere with the balance mechanisms of the inner ear, and include viral labyrinthitis, Meniere's disease, and otosclerosis; hyperventilation: overbreathing, typically secondary to anxiety.

Some Issues The two examples in the last section raise a number of important issues that must be addressed when one is building a functioning real-world diagnostic system. We now discuss how parsimonious covering theory supports the solutions of these issues. 1. W h a t is P a r s i m o n y ? To determine what characteristics make a set of disorders a plausible or "best" or "simplest" explanation for a given set of manifestations is a very important issue for automated diagnostic systems as well as for other abductive inference applications.

Now consider the justification of the ranking of competing disorders. In the generator for the final diagnosis, the first competing group contains only one disorder (Sasilar Migraine), so its ranking of < a > (always)is self-explanatory. The second and third groups contain multiple competing disorders with different rankings. Justification of these rankings is done as follows, motivated by answer justification methods developed for use with Bayesian classification [Reggia85e]. , are causally related to that disorder).

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Abductive Inference Models for Diagnostic Problem-Solving by Yun Peng

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