University of Toronto

About: University of Toronto is a education organization based out in Toronto, Ontario, Canada. It is known for research contribution in the topics: Population & Health care. The organization has 126067 authors who have published 294940 publications receiving 13536856 citations. The organization is also known as: UToronto & U of T.

The Role of Context for Object Detection and Semantic Segmentation in the Wild

Abstract: In this paper we study the role of context in existing state-of-the-art detection and segmentation approaches. Towards this goal, we label every pixel of PASCAL VOC 2010 detection challenge with a semantic category. We believe this data will provide plenty of challenges to the community, as it contains 520 additional classes for semantic segmentation and object detection. Our analysis shows that nearest neighbor based approaches perform poorly on semantic segmentation of contextual classes, showing the variability of PASCAL imagery. Furthermore, improvements of exist ing contextual models for detection is rather modest. In order to push forward the performance in this difficult scenario, we propose a novel deformable part-based model, which exploits both local context around each candidate detection as well as global context at the level of the scene. We show that this contextual reasoning significantly helps in detecting objects at all scales.

When More Pain Is Preferred to Less: Adding a Better End

Abstract: Subjects were exposed to two aversive experiences: in the short trial, they immersed one hand in water at 14 °Cfor 60 s; in the long trial, they im- mersed the other hand at 14 "C for 60 s, then kept the hand in the water 30 s longer as the temperature of the water was gradually raised to 15 °C, still pain- ful but distinctly less so for most sub- jects. Subjects were later given a choice of which trial to repeat. A significant majority chose to repeat the long trial, apparently preferring more pain over less. The results add to other evidence suggesting that duration plays a small role in retrospective evaluations of aver- sive experiences; such evaluations are often dominated by the discomfort at the worst and at the final moments of epi- sodes. you enjoying this?" or "Does it hurt?" This confidence could be unwarranted because two fallible mental processes separate retrospective assessments from the sequence of experiences that consti- tuted the original episode; an operation of memory and an act of evaluation. Some recent research has called into question the accuracy of people's mem- ories for their hedonic and affective ex- periences (Kent, 1985; Rachman & Eyrl, 1989; Thomas & Diener, 1990). This ar- ticle focuses on the process of evaluating

Parkinson's disease. Second of two parts.

Abstract: At no time in the past have the basic and clinical sciences applied to Parkinson's disease been so active. Experimental therapies under study at present promise to improve on the limitations of existing treatments. Future progress in understanding the causation and pathogenesis of the disorder will permit the development of new treatments that will slow, halt, or even reverse the currently inexorable progressive course of Parkinson's disease.