Proceedings 14th International Conference on Scientific and Statistical Database Management
1099-3371
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Efficient techniques for range search queries on earth science data
- Trang 142-151
We consider the problem of organizing large scale earth science raster data to efficiently handle queries for identifying regions whose parameters fall within certain range values specified by the queries. This problem seems to be critical to enabling basic data mining tasks such as determining associations between physical phenomena and spatial factors, detecting changes and trends, and content b......
#Geoscience #Large-scale systems #Data mining #Information retrieval #Content based retrieval #Data structures #Computational modeling #Educational institutions #Organizing #Tree data structures
ATreeGrep: approximate searching in unordered trees
- Trang 89-98
An unordered labeled tree is a tree in which each node has a string label and the parent-child relationship is significant, but the order among siblings is unimportant. This paper presents an approach to the nearest neighbor search problem for these trees. Given a database D of unordered labeled trees and a query tree Q, the goal is to find those trees in D that "approximately" contain Q. Our appr......
#XML #Computer science #Nearest neighbor searches #Phylogeny #Decision trees #Change detection algorithms #Object oriented databases #Filters #Algorithm design and analysis #Object oriented modeling
Use of metadata registries for searching for statistical data
- Trang 232-235
The Internet has spawned an insatiable appetite for information. This appetite cannot be satisfied without useful search tools. These tools rely on metadata in order to give targeted and meaningful results to searches, and the Internet world is realising that metadata, its management, and the means to search these metadata, are an integral part of the Internet world. The EC 5th Framework project C......
#XML #Web services #Simple object access protocol #Information retrieval #Business #Databases #Conference management #Uniform resource locators #Appropriate technology #Web server
A cost model for interval intersection queries on RI-trees
- Trang 131-141
The efficient management of interval data represents a core requirement for many temporal and spatial database applications. With the relational interval tree (RI-tree), an efficient access method has been proposed to process interval intersection queries on top of existing object-relational database systems. The paper complements that approach by effective and efficient models to estimate the sel......
#Costs #Databases #Conference management
Query processing with description logic ontologies over object-wrapped databases
- Trang 27-36
This paper presents an approach to answering queries over an ontology modelled using a description logic. The ontology acts as a global schema, providing a declarative description of the concepts of the domain, the instances of which are stored in (potentially many) object-wrapped sources. Queries are expressed using terms from the rich vocabulary of the ontology, and are translated into an equiva......
#Query processing #Logic #Ontologies #Proposals #Bioinformatics #Calculus #Spatial databases #Object oriented modeling #Algebra #Computer science
Similarity searching for multi-attribute sequences
- Trang 175-184
We investigate the problem of searching similar multiattribute time sequences. Such sequences arise naturally in a number of medical, financial, video, weather forecast, and stock market databases where more than one attribute is of interest at a time instant. We first solve the simple case in which the distance is defined as the Euclidean distance. Later we extend it to shift and scale invariance......
#Weather forecasting #Databases #Discrete Fourier transforms #Stock markets #Economic forecasting #Euclidean distance #Wavelet transforms #Computer science #Mathematics #Indexes
Chimera: a virtual data system for representing, querying, and automating data derivation
- Trang 37-46
A lot of scientific data is not obtained from measurements but rather derived from other data by the application of computational procedures. We hypothesize that explicit representation of these procedures can enable documentation of data provenance, discovery of available methods, and on-demand data generation (so-called "virtual data"). To explore this idea, we have developed the Chimera virtual......
#Data systems #Computer applications #Documentation #Distributed computing #Grid computing #Processor scheduling #Distributed databases #Computational modeling #Discrete event simulation #Physics
An architecture for managing distributed scientific resources
- Trang 47-55
There are many examples where cooperation among scientists takes place by exchanging scientific resources, such as data, programs and mathematical models. This is particularly true for environmental applications. Finding the right resource to apply in an environmental problem is a difficult task. Usually, this decision is based on previous experience. Scientists have to cooperate in order to solve......
#Resource management #Environmental factors #Documentation #Context modeling #Mathematical model #Proposals #Database systems #Isolation technology #Web services #Protocols
The Edinburgh mouse atlas and gene-expression database: a spatio-temporal database for biological research
- Trang 239
The Edinburgh Mouse Atlas Project (EMAP) has developed a digital atlas of mouse development which provides a bioinformatics framework to spatially reference biological data. The EMAP core database contains 3D grey-level reconstructions of the mouse embryo at various stages of development, a systematic nomenclature of the embryo anatomy, and defined 3D regions (domains) of the embryo. The reconstru......
#Mice #Spatial databases #Embryo #Bioinformatics #Systematics #Anatomy #Object oriented modeling #Object oriented databases #Middleware #Java
Joint queries estimation from multiple OLAP databases
- Trang 241
Given an OLAP query expressed over a collection of source OLAP databases, we study the problem of computing the result OLAP target database when the underlying detail data of the source databases are not available. The problem arises when the source databases do not have the same category attributes, and it is not possible to derive the result from a single database. The method we use is the linea......
#Databases #Yield estimation #Cyclotrons #Interpolation #Demography #State estimation