Results 11 - 20 of 7,426

XML Multidimensional Modelling and Querying

by Serge Boucher, Boris Verhaegen
"... Abstract. As XML becomes ubiquitous and XML storage and process-ing becomes more efficient, the range of use cases for these technolo-gies widens daily. One promising area is the integration of XML and data warehouses, where an XML-native database stores multidimen-sional data and processes OLAP que ..."
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queries written in the XQuery inter-rogation language. This paper explores issues arising in the implemen-tation of such a data warehouse. We first compare approaches for mul-tidimensional data modelling in XML, then describe how typical OLAP queries on these models can be expressed in XQuery. We

Attention, similarity, and the identification-Categorization Relationship

by Robert M. Nosofsky , 1986
"... A unified quantitative approach to modeling subjects ' identification and categorization of multidimensional perceptual stimuli is proposed and tested. Two subjects identified and categorized the same set of perceptually confusable stimuli varying on separable dimensions. The identification dat ..."
Abstract - Cited by 690 (28 self) - Add to MetaCart
A unified quantitative approach to modeling subjects ' identification and categorization of multidimensional perceptual stimuli is proposed and tested. Two subjects identified and categorized the same set of perceptually confusable stimuli varying on separable dimensions. The identification

THE EFFECT OF TYPE OF MULTIDIMENSIONAL MODEL ON

by M. Padraig, M. M. Mcloughlin, M. Padraig M. M. Mcloughlin, Ph. D
"... ..."
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A new fuzzy multidimensional model

by Carlos Molina, Lázaro Rodríguez-ariza, Daniel Sánchez, M. Amparo Vila
"... Abstract—As a result of the use of OLAP technology in new fields of knowledge and the merging of data from different sources, it has become necessary for models to support this technology. In this paper, we shall propose a new multidimensional model that can manage imprecision in both dimensions and ..."
Abstract - Cited by 7 (5 self) - Add to MetaCart
Abstract—As a result of the use of OLAP technology in new fields of knowledge and the merging of data from different sources, it has become necessary for models to support this technology. In this paper, we shall propose a new multidimensional model that can manage imprecision in both dimensions

The algorithmic analysis of hybrid systems

by R. Alur, C. Courcoubetis, N. Halbwachs , T. A. Henzinger, P.-H. Ho, X. Nicollin , A. Olivero , J. Sifakis , S. Yovine - THEORETICAL COMPUTER SCIENCE , 1995
"... We present a general framework for the formal specification and algorithmic analysis of hybrid systems. A hybrid system consists of a discrete program with an analog environment. We model hybrid systems as nite automata equipped with variables that evolve continuously with time according to dynamica ..."
Abstract - Cited by 778 (71 self) - Add to MetaCart
to linear hybrid systems. In particular, we consider symbolic model-checking and minimization procedures that are based on the reachability analysis of an infinite state space. The procedures iteratively compute state sets that are definable as unions of convex polyhedra in multidimensional real space. We

Fast and robust fixed-point algorithms for independent component analysis

by Aapo Hyvärinen - IEEE TRANS. NEURAL NETW , 1999
"... Independent component analysis (ICA) is a statistical method for transforming an observed multidimensional random vector into components that are statistically as independent from each other as possible. In this paper, we use a combination of two different approaches for linear ICA: Comon’s informat ..."
Abstract - Cited by 884 (34 self) - Add to MetaCart
Independent component analysis (ICA) is a statistical method for transforming an observed multidimensional random vector into components that are statistically as independent from each other as possible. In this paper, we use a combination of two different approaches for linear ICA: Comon’s

Implementing data cubes efficiently

by Venky Harinarayan, Anand Rajaraman, Jeffrey D. Ulman - In SIGMOD , 1996
"... Decision support applications involve complex queries on very large databases. Since response times should be small, query optimization is critical. Users typically view the data as multidimensional data cubes. Each cell of the data cube is a view consisting of an aggregation of interest, like total ..."
Abstract - Cited by 548 (1 self) - Add to MetaCart
Decision support applications involve complex queries on very large databases. Since response times should be small, query optimization is critical. Users typically view the data as multidimensional data cubes. Each cell of the data cube is a view consisting of an aggregation of interest, like

Multidimensional Models Used in Rivers and Streams

by N. K. Raphelt, M. P. Alex , 2001
"... introduce state-of-the-art applications of multidimensional models with sediment transport capabilities to solve sedimentation problems in rivers and streams. INTRODUCTION: The term multidimensional encompasses both two- and three-dimensional models. Models of this type typically include both hydrod ..."
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introduce state-of-the-art applications of multidimensional models with sediment transport capabilities to solve sedimentation problems in rivers and streams. INTRODUCTION: The term multidimensional encompasses both two- and three-dimensional models. Models of this type typically include both

Design of a Multidimensional Model Using

by Payal Pahwa, Shweta Taneja, Shalini Jain, Payal Pahwa, Shweta Taneja, Shalini Jain, Payal Pahwa, Shweta Taneja, Shalini Jain , 2011
"... A data warehouse is a single repository of data which includes data generated from various operational systems. Conceptual modeling is an important concept in the successful design of a data warehouse. The Unified Modeling Language (UML) has become a standard for object modeling during analysis and ..."
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and design steps of software system development. The paper proposes an object oriented approach to model the process of data warehouse design. The hierarchies of each data element can be explicitly defined, thus highlighting the data granularity. We propose a UML multidimensional model using various data

Investigating Social Entrepreneurship: A Multidimensional Model.’

by Jay Weerawardena , Gillian Sullivan Mort - Journal of World Business , 2006
"... Abstract Social entrepreneurship is an emerging area of investigation within the entrepreneurship and not-for-profit marketing literatures. A review of the literature emerging from a number of domains reveals that it is fragmented and that there is no coherent theoretical framework. In particular, ..."
Abstract - Cited by 47 (1 self) - Add to MetaCart
, this paper addresses this research gap and develops a bounded multidimensional model of social entrepreneurship. Implications for social entrepreneurship theory, management practice, and policy directions are discussed. Crown
Results 11 - 20 of 7,426