American Sign Language famously disambiguates pronoun antecedents with the use of space. In ASL, both referential and quantificational NPs can be signed at different locations (‘loci’) in the signing space. Pronouns can later retrieve these NPs by pointing at the same locus. Many analyses of ASL pronouns assume that these spatial loci are the overt realization of formal variables (Lillo-Martin ...

The scalar particle mo in Japanese gives rise to ambiguity in negative contexts. In this paper we argue that the ambiguity cannot be accounted for as a scopal ambiguity, and propose a lexical ambiguity account. In particular, we observe that the distribution of the small reading of mo is limited to a subset of NPI licensing environments, and is sensitive to presuppositions, from which we conclu...

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 ...

Abstract We empirically show that sample information not only moderates prospects’ outcome ambiguity but also decision makers’ revealed aversion of them. Since most natural prospects permit at least some inference, accounting for their degree improves prediction aversion. The special case full ambiguity, as in Ellsberg-type designs, is typically averted—yet many makers systematically like low d...

One of the central problems in the study of human language processing is ambiguity resolution: how do people resolve the extremely pervasive ambiguity of the language they encounter? One possible answer to this question is suggested by experience-based models, which claim that people typically resolve ambiguities in a way which has been successful in the past. In order to determine the course o...

Biological or biomedical objects, such as expressive human faces and growing brain tumors, and dynamic scenes, such as cars running on the roads, generally vary their shapes as linear combinations of a number of shape bases. With the expeditious development of computer and imaging technologies, the problems of reconstruction, registration, and modeling of such deformable shapes from image measu...

This talk is based on a joint paper with A. Bonami and G. Garrigós [3] in which the phase retrieval problem for the Radar Ambiguity Function (i.e. the Radar Ambiguity Problem) has been tackled. In particular it was shown that for wide classes of signals, the radar ambiguity problem has a unique solution, up to trivial transformations. In the second part of the talk, we report on ongoing work by...