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
A negotiation agent for distributed heterogeneous statistical databases
- Trang 207-216
The World-Wide Web provides an ever-increasing source of diverse information. We focus on query agents, in particular the matching and negotiation agents that are responsible for pre-integration where the matching agent decomposes the query into sub-queries, and then searches metadata to find datasets that match the query fragments. In the case of heterogeneous data, the matching agent utilises a ......
#Distributed databases #Intelligent agent #Aggregates #Statistics #Distributed computing #Internet #Testing #Runtime #Software agents #Artificial intelligence
Metadata for traveling statistics-the world of statistics meets the semantic Web
- Trang 191
Summary form only given. The paper focuses on the requirements of metadata in a world where the Internet and the Web have become the dominant communication and dissemination medium for statistical information. Four important aspects of metadata (finding, understanding, assessing and sharing) are discussed in the light of this development. Special focus is on the ideas and concepts of the semantic ......
#Statistics #Semantic Web #Internet #Management information systems #Standards development #Documentation #Databases #Conference management
Abstract and discrete models for uncertain spatiotemporal data
- Trang 240
Summary form only given. We deal with the uncertainty in spatial and spatiotemporal databases. Due to lack of accurate measurements, or rapid changes in time, spatial and spatiotemporal data are often uncertain. Our work presents new abstract and discrete models for uncertain spatial and spatiotemporal information. The models are based on the principle that one knows that the uncertain object, reg......
#Spatiotemporal phenomena #Uncertainty #Computer science #Spatial databases #Time measurement #Costs #Shape #Data analysis #Database systems #Data models
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
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
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
Information-theoretic disclosure risk measures in statistical disclosure control of tabular data
- Trang 227-231
Statistical database protection is a part of information security which tries to prevent published statistical information (tables, individual records) from disclosing the contribution of specific respondents. This paper shows how to use information-theoretic concepts to measure disclosure risk for tabular data. The proposed disclosure risk measure is compatible with a broad class of disclosure pr......
#Protection #Databases #Information security #Information theory #Statistics #Aggregates #Sampling methods #Statistical distributions #Conference management
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
Thiết kế và triển khai ngôn ngữ truy vấn dữ liệu dựa trên nghĩa Dịch bởi AI
- Trang 20-23
Chúng tôi trình bày thiết kế và triển khai một ngôn ngữ truy vấn dữ liệu dựa trên nghĩa - MDDQL - nhằm mục đích xây dựng các truy vấn thông qua những gợi ý từ hệ thống về các thuật ngữ truy vấn dựa trên ngôn ngữ tự nhiên cho cả lĩnh vực ứng dụng khoa học và các thuật ngữ toán tử/hoạt động. Một bảng đen xây dựng truy vấn được sử dụng, nơi các thuật ngữ ngôn ngữ truy vấn được gợi ý cho người dùng bằ......
#Database languages #Natural languages #Vocabulary #Ontologies #Engines #Computer science #Application software #Data models #Software packages #Database systems