We compare different preference restrictions that ensure the existence of a stable roommate matching. Some of these restrictions are generalized to allow for indifferences as well as incomplete preference lists, in the sense that an agent may prefer remaining single to matching with some agents. We also introduce a new type of cycles and in greater detail investigate the domain of preferences t...

The limitations of estimating structure from either stereo or motion alone can be addressed by the use of stereo image sequences; however, many existing techniques for processing stereo sequences rely on having accurate feature correspondences initially. In this paper, we present an iterative feature matching and shape reconstruction algorithm. The proposed method simultaneously resolves matchi...

Rauch (JIE, Vol.48, 1999) proposes the hypothesis that proximity and common language / colonial ties are more important for differentiated products than for homogeneous products in forming price information and matching international buyers and sellers. His gravity-model analysis, however, is not able to show strong evidence to support this hypothesis. In this paper, by using SITC and monopolis...

This report presents a new technique for visual matching of images for the purpose of object recognition and shape matching by employing a multi-hypothesis approach. The approach is based on an analogy between multi-robot localization and object recognition. The algorithm is recursive with each individual step verifying fragments of different objects while guiding the focus towards discriminati...

In this paper, we consider the agreement problem of estimating the locations of landmarks observed by multiple agents in the absence of a global frame of reference. Maximum likelihood estimators are derived from scenarios of independent and mutual landmark estimation. A triangle-based hypothesis test is proposed for the detection of common landmarks across the coordinate systems of the agents a...

We report a patient with COPD who experienced severe dyspnea with a decreased PaO2 in the sitting position, largely improved in the ventral prone position (platypnea). By using an isotopic method, we showed that this phenomenon is the result of a deleterious effect of the sitting position on regional ventilation/perfusion matching. We speculated that hypoxic vascular pulmonary constriction was ...

The Pirahã, an Amazonian hunter-gatherer tribe, lack words for numbers and are unable to complete simple matching tasks when the tasks require memory for exact quantities (Gordon, 2004; Frank et al., in press). Here we show that American participants perform similarly to the Pirahã when asked to execute the same kinds of matching tasks under verbal interference. These results provide support fo...