Exercise behaviour and sleep are both important health indicators that demonstrate significant decreases with age, and remain modifiable well into later life. The current investigation examined both the chronic and acute relationships between exercise behaviour and self-reported sleep in older adults through a secondary analysis of a clinical trial of a lifestyle intervention. Seventy-nine comm...

Answering to precise questions requires applying Natural Language techniques in order to locate the answers inside retrieved documents. The QALC system, presented in this paper, participated t o the Question Answering track of the TREC8 and TREC9 evaluations. QALC exploits an analysis of documents based on the search for multi-word terms and their variations. These indexes are used to select a ...

A considerable literature on attribution theory has shown that healthy individuals exhibit a positivity bias when inferring the causes of evaluative feedback on their performance. They tend to attribute positive feedback internally (e.g., to their own abilities) but negative feedback externally (e.g., to environmental factors). However, all empirical demonstrations of this bias suffer from at l...

Web search engines provide specialized results to specific queries, often relying on the output of a QA system. However, targeted answers, while helpful, are embarrassing when wrong. Automated techniques are required to avoid wrong answers and improve system performance. We present the Expected Answer System, a statistical data-driven framework that analyzes the performance of a QA system with ...

The TREC question answering (QA) track was the first large-scale evaluation of open-domain question answering systems. In addition to successfully fostering research on the QA task, the track has also been used to investigate appropriate evaluation methodologies for question answering systems. This paper gives a brief history of the TREC QA track, motivating the decisions made in its implementa...

The ranking method of XML preference query results is an important issue. For user’s preference query request, the query results are often user’s interested information. In order to satisfy the user’s personalized query requirements, this paper proposes the XML contextual preference model. When a user submits a query request, the user’s preference query results depend on the contextual conditio...

Query optimizers often have diiculties with the treatment of user-deened functions. In particular, the optimization of joins involving complex, user-deened predicates rather than just simple arithmetic comparisons may lead to query plans of poor quality. In this paper, we identify a class of user-deened functions that can be included in queries in such a way that eecient query optimization is s...

BACKGROUND In our competing educational world, students spend a considerable part of their daily life, studying at library furniture. Not surprisingly, due to lack of proper anthropometric databases, these products have typically been ill fitted for the intended user populations. OBJECTIVE To verify the optimum anthropometric match of library furniture within an academic environment, through ...

Broad domain question answering is often difficult in the absence of structured knowledge bases, and can benefit from shallow lexical methods (broad coverage) and logical reasoning (high precision). We propose an approach for incorporating both of these signals in a unified framework based on natural logic. We extend the breadth of inferences afforded by natural logic to include relational enta...