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The symmetrical matrices in geomatics have been generated every day, and their scale have been increasingly and rapidly expanded. The existed data management of symmetrical matrices has been increasingly faced with some great difficulties and challenges. This paper introduces briefly our works on a new expanded relationship database management system, the symmetry-relationship database management...
Searching is an important activity in software maintenance. Dedicated data structures have been used to support either textual or structural queries over source code. The goal of this ongoing research is to elaborate a hybrid data storage that enables simultaneous textual and structural search. The naive adjacency list method has been combined with the inverted index approach. The data model has been...
While models for data provenance have been extensively studied in the literature, the efficient evaluation of the resulting provenance queries remains an open problem. Traditional query optimization techniques, like the use of general-purpose indexes, or the materialization of provenance data, fail on different fronts to address the problem. Provenance-specific optimization techniques, like the use...
XML and its related technologies have now been in use for almost a decade. There has been considerable amount of effort both from research and industry focusing on XML, XQuery/XPath, XSLT and SQL/XML processing in the database. Many research prototypes and industrial products have been built to satisfy the XML use cases. This paper reviews several use cases where XML databases are leveraged to build...
In this paper, a data extraction model to support the traffic safety integrated information database is presented, which is conformed to the requirements of the public security traffic management departments. And the relative data that were stored in the diverse media and computer systems can be extracted efficiently, and transformation of different kinds of data constructions and dynamic updating...
The inherent flexibility in both structure and semantics let tree capture most kinds of data, model a wide variety of data sources, and produce an enormous number of information. The ability to extract valuable knowledge from them becomes increasingly important and desirable, however, existing tree mining algorithms suffer from several serious pitfalls in finding frequent patterns from massive tree...
The normalized PDM (physical data model) affects the performance of database. In this paper, the normalization and database data model design of RDBMS were discussed in brief. The deep analyses of the de-normalization principles and methods for design optimization of a physical data model of a test bank based on SQL Server were used to improve the performance of database.
XPath has been widely used as a query language for selecting nodes from XML documents. Efficient XPath evaluation is thus a core building block in XML query processors. In the paper, we first introduce a compact structural summary index for XML data and then propose an efficient XPath evaluation algorithm based on this index. Our algorithm takes full advantage of the structural summary to prune a...
The agenda database file, stored in the telephony, is rich of personal information. Analyzing and extracting the useable clues is very significant for case-investigation and evidence-gaining. First of all, it is necessary to analyze the data structure of the database files and retrieve the information. In this paper, I find out the data structure of agenda files, on the IDE-- Carbide C++ developed...
In large-scale grid applications, relationship between VOs is not simple information aggregating for autonomy and visiting security. This paper presents a virtual grid information database (VGID) which implements a hierarchical and distributed information management mechanism. An information model is presented with extensible resource metadata management and hierarchical information organization that...
The characteristics of "poor" information in database and the requirement of "poor" information data mining are analyzed. Based on gray trend relational degree and general system theory, the model of gray trend relational system is investigated. As an application of this model, the gray trend clustering method is presented. Based on the scanty data of some examination papers in...
In this paper we have designed a sample fuzzy database and we have applied both classical and fuzzy query on this fuzzy database. We have also shown that the time cost of fuzzy query on classical database (DB) is the same as the classical query on classical DB. But the time cost of the fuzzy query on sample fuzzy database has been reduced.
Data transactions between business partners often include unstructured data such as invoices or purchase orders. In order to process such automatically, complex business entities need to be identified. Examples for complex entities are products, business partners and purchase orders which are stored in a supplier relationship management system. Both, structured records in the enterprise system and...
Write-heavy applications present a challenge to peer-to-peer indexing methods which need to update the index for each write operation. The costs incurred when the distributed index is updated becomes a bottleneck. Current distributed indexing methods are designed for indexing and retrieving single tuples, giving a very high update cost. In this paper we present a new approach to efficient peer-to-peer...
With the development of the global market, the growth internet technology is changing design style. Collaborative design is a new design style for designers of different places to complete the same design project. However, how to select a suitable partner for the collaborative design project is an important problem. A fuzzy Analytic Hierarchy Process (AHP) methodology is presented for the partner...
Simulation experiment is one of the main approaches of the measure of effectiveness of C4ISR systems. Different phase of the construction of C4ISR system results different requirements of simulation and evaluation experimental methods. Six typical applying modes are summarized here and it is pointed out that the traditional method has to construct different environments and simulation systems for...
Building information modelling (BIM) is only a tool in the procurement of a building, but it is changing the way the whole process is undertaken. Having a single model which is used by all disciplines requires a different management structure and by consequence a restructuring of the resources required to complete a project.These changes are encompassed in Integrated Practice and more recently Integrated...
The development of an open architecture for multimedia data integration and visualization in template based distributed applications is a challenge for the scientific researches. Because of characteristics of multimedia data, their management and querying techniques are unlike than those of traditional data. We can increase the potential use of multimedia data across various applications by storing...
Effective integration and application of geographical data and environment information has been studied as the most pressing challenge in marine military GIS field. In this paper, we present an integrative region grid object (RGO) model, a dynamic hot-region index and a combat- pattern based application method to improve the traditional work. While the multi-source situation information are stored...
A fundamental problem in whole sequence matching and subsequence matching is the problem of representation of time series. In the last decade many high level representations of time series have been proposed for data mining which involve a trade-off between accuracy and compactness. In this paper the author proposes a novel time series representation called GMBR based on Minimum Bounding Rectangle...
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