منابع مشابه
On ambiguity
Biologists study a remarkable variety of problems and organisms. How do we choose between yeast, corn, zebrafish, worms, monkeys and man? In the interests of full disclosure, it is only fair to confess that I study the stomachs of lobsters and crabs. This is not because I find the anatomy and physiology of crustacean guts intrinsically fascinating (and here, I apologize to those few brave souls...
متن کاملAmbiguity and Ambiguity Aversion
Consider the following choice problem, known as “Ellsberg’s three-color urn example”, or simply the “Ellsberg Paradox” (Ellsberg [7]). An urn contains 30 red balls, and 60 green and blue balls, in unspecified proportions; subjects are asked to compare (i) a bet on a red draw vs. a bet on a green draw, and (ii) a bet on a red or blue draw vs. a bet on a green or blue draw. If the subject wins a ...
متن کاملComments on the Gribov Ambiguity
We discuss the existence of Gribov ambiguities in SU(m)×U(1) gauge theories over the n−spheres. We achieve our goal by showing that there is exactly one conjugacy class of groups of gauge transformations for the theories given above. This implies that these transformation groups are conjugate to the ones of the trivial SU(m)×U(1) fiber bundles over the n−spheres. By using properties of the spac...
متن کاملOn GNSS Ambiguity Acceptance Tests
Integer carrier phase ambiguity resolution is the key to fast and highprecision global navigation satellite system (GNSS) positioning and application. Apart from integer estimation, also acceptance tests are part of the ambiguity resolution process. A popular acceptance test is the so-called ratio-test. In this contribution we study the properties and the underlying concepts of the ratio-test. ...
متن کاملSemantic Ambiguity and Perceived Ambiguity
I explore some of the issues that arise when trying to establish a connection between the underspecification hypothesis pursued in the NLP literature and work on ambiguity in semantics and in the psychological literature. A theory of underspecification is developed ‘from the first principles’, i.e., starting from a definition of what it means for a sentence to be semantically ambiguous and from...
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ژورنال
عنوان ژورنال: Current Biology
سال: 1999
ISSN: 0960-9822
DOI: 10.1016/s0960-9822(99)80344-3