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EOR
2006
94views more  EOR 2006»
13 years 10 months ago
Portfolio rebalancing model with transaction costs based on fuzzy decision theory
The fuzzy set is one of the powerful tools used to describe an uncertain environment. As well as quantifying any potential return and risk, portfolio liquidity is taken into accou...
Yong Fang, K. K. Lai, Shouyang Wang
ADBIS
2003
Springer
204views Database» more  ADBIS 2003»
14 years 1 months ago
Hierarchical Bitmap Index: An Efficient and Scalable Indexing Technique for Set-Valued Attributes
Abstract. Set-valued attributes are convenient to model complex objects occurring in the real world. Currently available database systems support the storage of set-valued attribut...
Mikolaj Morzy, Tadeusz Morzy, Alexandros Nanopoulo...
ISPAN
2002
IEEE
14 years 2 months ago
Parallel Selection Query Processing Involving Index in Parallel Database Systems
Index is an important element in databases, and the existence of index is unavoidable. When an index has been built on a particular attribute, database operations (e.g. selection,...
J. Wenny Rahayu, David Taniar
ICDE
2003
IEEE
157views Database» more  ICDE 2003»
14 years 11 months ago
Energy Efficient Index for Querying Location-Dependent Data in Mobile Broadcast Environments
We are witnessing in recent years growing interest for location-dependent information services among mobile users. This paper examines the issue of processing locationdependent qu...
Jianliang Xu, Baihua Zheng, Wang-Chien Lee, Dik Lu...
DEXAW
2005
IEEE
176views Database» more  DEXAW 2005»
13 years 12 months ago
Indexes and Path Constraints in Semistructured Data
In this paper, we study semistructured data and indexes preserving inclusion constraints. A semistructured datum is modelled by multi-rooted edge-labeled directed graphs. We consi...
Yves Andre, Anne-Cécile Caron, Denis Debarb...