نتایج جستجو برای: 5335 sensitive
تعداد نتایج: 282085 فیلتر نتایج به سال:
This paper compares a number of recently proposed models for computing context sensitive word similarity. We clarify the connections between these models, simplify their formulation and evaluate them in a unified setting. We show that the models are essentially equivalent if syntactic information is ignored, and that the substantial performance differences previously reported disappear to a lar...
The Tukey depth (Tukey 1975) of a point p with respect to a finite set S of points is the minimum number of elements of S contained in any closed halfspace that contains p. Algorithms for computing the Tukey depth of a point in various dimensions are considered. The running times of these algorithms depend on the value of the output, making them suited to situations, such as outlier removal, wh...
Recent theories of semantic memory have proposed that concepts are grounded in sensorimotor activity and mediated by the context from which the knowledge is drawn (Barsalou, 1999, 2003, 2008). Conceptual knowledge draws upon information from all modalities and therefore includes knowledge of associated object actions linked with both function and general movement (Bub, Masson, & Cree, 2008). Th...
This tutorial will describe the use of a factored probabilistic sequence model for parsing speech and text using a bounded store of three to four incomplete constituents over time, in line with recent estimates of human shortterm working memory capacity. This formulation uses a grammar transform to minimize memory usage during parsing. Incremental operations on incomplete constituents in this t...
Are propagating scattered context grammars as powerful as context sensitive grammars? This question customarily referred to as the L (PSCG) = L (CS) (see [4]) problem, represents a long standing open problem in formal language theory. The present paper reformulates and answers this question in terms of CD grammar systems. More precisely, the paper introduces CD grammar systems whose components ...
BACKGROUND Limited epidemiological evidence suggests that low maternal iron status and anaemia in pregnancy may increase the risk of childhood respiratory and allergic outcomes. OBJECTIVES To investigate the relation between maternal haemoglobin concentrations in pregnancy and childhood respiratory and allergic outcomes. METHODS In the Avon Longitudinal Study of Parents and Children (ALSPAC...
OBJECTIVES Catastrophic health expenditure (CHE) means that the medical spending of a household exceeds a certain level of capacity to pay. Previous studies of CHE have focused on benefits supported by the public sector or high medical cost incurred by treating diseases in South Korea. This study examines variance of CHE in these households according to changes in employment status. We also det...
Many studies have investigated relationships between APOE genotype and bone mineral density (BMD). However, the results of these studies have been inconsistent. Few studies have been carried out in Asian populations. We studied the relationship of the APOE gene polymorphism and BMD in two large population-based studies. The datasets included the Dong-gu Study (3575 men and 5335 women) and the N...
A large body of research in machine learning is concerned with supervised learning from examples. The examples are typically represented as vectors in a multi-dimensional feature space (also known as attribute-value descriptions). A teacher partitions a set of training examples into a finite number of classes. The task of the learning algorithm is to induce a concept from the training examples....
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