Evaluation of Top-k Queries over Structured and Semi-structured Data

This paper describes the implementation details of a coded structured light system useful for one-shot measurements of a surface. Since a unique pattern is projected, the technique is useful for measuring moving surfaces. A pattern based on grid structure is used. The main advantage of such structure is that redundant codification is applied to the cross-points. Since both pattern axis are code...

This paper d i s c u s s e s the problem of p r o v i d i n g n a t u r a l l anguage access to textual material. We are developing a system that r e l a t e s a r e q u e s t i n E n g l i s h to s p e c i f i c p a s s a g e s i n a document on the b a s i s of co r respondences between the l o g i c a l r e p r e s e n t a t i o n s of the i n f o r m a t i o n i n the r e q u e s t and i n ...

In this study, we empirically explore how task performance and domain-specific self-efficacy influence the perceived ease of use (PEU) of object-oriented techniques. We hypothesize that both self-efficacy and performance positively influences PEU according to existing literature. However, we speculate that the effect of self-efficacy on PEU, even though still positive, becomes weaker when subje...

While ensembles have been used for structured output learning, the literature lacks an extensive study of different strategies to construct ensembles in this context. In this work, we fill this gap by presenting a thorough empirical comparison of ensembles that predict the complete output structure at once, versus a combination of ensembles that each predicts a single component of the structure...

Quite a number of models have been proposed under the name of structured analysis and design. It has been pointed out, however, that there is no common theoretical framework among them. Transformation of a specification from one model to another, although often recommended by authors, can only be done manually. A category-theoretic approach is proposed in this paper. As a result, development of...

We perform an economic analysis of the Customs-Trade Partnership Against Terrorism (C-TPAT), modeling the strategic interaction between the Bureau of Customs and Border Protection (CBP) and trading firms as a Stackelberg game. We characterize the unique equilibrium outcome and perform comparative statics. We provide insights relevant to policy planners and to private sector trading firms. We fi...

A simple and inexpensive approach for extracting the threedimensional shape of objects is presented. It is based on `weak structured lighting'; it di ers from other conventional structured lighting approaches in that it requires very little hardware besides the camera: a desk-lamp, a pencil and a checkerboard. The camera faces the object, which is illuminated by the desk-lamp. The user moves a ...