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object-oriented Data Representation for Computer Aided Control Engineering

IFAC Proceedings Volumes 1993年第2期26卷 661-664页

作者： H.A. Barker I.T. Harvey P.W. Grant C.P. Jobling Departments of Electrical and Electronic Engineering & Mathematics and Computer Science University of Wales Singleton Park Swansea SA2 8PP UK

This paper examines the application of object-oriented database management systems to computer-aided control engineering. The system representation models and data types employed by existing contro1 engineering packages for system representation are surveyed. The object classes that are required are derived from this and an object model for system representation is developed. The database management facilities provided by existing control engineering software are minimal, and the facilities required by an integrated working environment are outlined, including model management. The rôle of open systems in definillg and accessing model classes is examined with a view to developing a standardised framework for object-oriented computer-aided control engineering.

关键词： object-oriented databases object modelling database management systems computer-aided control engineering open systems

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QUERIES AND QUERY-PROCESSING IN object-oriented DATABASE-SYSTEMS

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ACM TRANSACTIONS ON INFORMATION SYSTEMS 1990年第4期8卷 387-430页

作者： STRAUBE, DD OZSU, MT Univ. of Alberta Edmonton Alberta

object-oriented database management systems (OODBMS) combine the data abstraction and computational models of object-oriented programming languages with the query and performance capabilities of database management systems. A concise, formal data model for OODBMS has not been universally accepted, preventing detailed investigation of various system issues such as query processing. We define a data model that captures the essence of classification-based object-oriented systems and formalize concepts such as object identity, inheritance, and methods. The main topic of the paper is the presentation of a query processing methodology complete with an object calculus and a closed object algebra. Query processing issues such as query safety and object calculus to object algebra translation are discussed in detail. The paper concludes with a discussion of equivalence-preserving transformation rules for object algebra expressions.

关键词： ALGORITHMS, DESIGN, LANGUAGES object ALGEBRA object CALCULUS object-oriented databases QUERY TRANSFORMATION RULES

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object-oriented organization modeling for the support of CSCW

Object-oriented organization modeling for the support of CSC...

引用

Annual Hawaii International Conference on System Sciences (HICSS)

作者： Prinz GMD Germany

The emerging research area of computer supported cooperative work (CSCW) has yielded a number of groupware applications in recent years. The application and installation of these systems in large organization or for the support of inter-organizational cooperation requires information about the organizational environment in which they are used. The TOSCA system which is described aims to provide that kind of information to users and applications. The author describes the object-oriented data model, the design of the multimedia user interface, the integration with other applications and the architecture of TOSCA.< >

关键词： Collaborative work object-oriented databases Data models User interfaces Multimedia computing

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Strategic management with a hyperknowledge support system

Strategic management with a hyperknowledge support system

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Annual Hawaii International Conference on System Sciences (HICSS)

作者： Walden Carlsson Institute for Advanced Management Systems Research Åbo Akademi University Abo Finland

Recent developments in knowledge-based systems technology offer an excellent and effective approach to building management support systems for strategic management. We have developed a hyperknowledge support system for strategic management in the forest industry, and have tried it out in several strategic business units in a major corporation. The core of the system is an object-oriented expert system, which has been overlaid with a hyperknowledge support system. This turns out to be a useful construct, as we get a non-trivial level of knowledge representation and an attractive and easy-to-use support system. We tested the system with 30 managers and some early results show definite improvements in the quality of some key elements of the strategic management process. Our results show so far that hyperknowledge support systems promise to have a significant impact on strategic management.< >

关键词： Knowledge representation Decision-support systems Hypertext systems object-oriented databases Knowledge-based systems Management decision-making

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Evolution of performance behaviour of storage techniques: A case study

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IT - Information Technology 1995年第6期37卷 21-27页

作者： Runge, N. IBM Wissenschaftliches Zentrum Heidelberg Germany

This article describes a case study that evaluates the performance behaviour of the storage techniques of the commercial object-oriented database system objectStore. The knowledge about the performance relevant properties of storage techniques is imperative for database designers in order to achieve an objectStore application with a good performance behaviour. The case study is based on the 007 benchmark. It turned out that there is a great potential for performance improvements. © 1995 De Gruyter Oldenbourg. All rights reserved.

关键词： object-oriented databases

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Incremental computation of complex object queries 01

Incremental computation of complex object queries

引用

ACM SIGPLAN Conference on object-oriented Programming, Systems, Languages, and Applications

作者： Hiroaki Nakamura IBM Research Tokyo Research Laboratory 1623-14 Shimotsuruma Yamato-shi Kanagawa-ken 242-8502 Japan

ISBN: (纸本)1581133359

The need for incremental algorithms for evaluating database queries is well known, but constructing algorithms that work on object-oriented databases (OODBs) has been difficult. The reason is that OODB query languages involve complex data types including composite objects and nested collections. As a result, existing algorithms have limitations in that the kinds of database updates are restricted, the operations found in many query languages are not supported, or the algorithms are too complex to be described precisely. We present an incremental computation algorithm that can handle any kind of database updates, can accept any expressions in complex query languages such as OQL, and can be described precisely. By translating primitive values and records into collections, we can reduce all query expressions comprehension. This makes the problems with incremental computation less complicated and thus allows us to decribe of two parts: one is to maintain the consistency in each comprehension occurrence and the other is to update the value of an entire expression. The algorithm is so flexible that we can use strict updates, lazy updates, and their combinations. By comparing the performance of applications built with our mechanism and that of equivalent hand written update programs, we show that our incremental algorithm can be iplemented efficiently.

关键词： data base language Incremental algorithms data types data querying object-oriented databases arithmetic Constructive Algorithm

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Monitoring road infrastructures from satellite images in Greater Maputo: an object-oriented classification approach

arXiv

引用

arXiv 2024年

作者： Burzacchi, Arianna Landrò, Matteo Vantini, Simone MOX Laboratory Department of Mathematics Politecnico di Milano Piazza Leonardo da Vinci 2 Milano20133 Italy SAS Institute Inc. 100 SAS Campus Drive CaryNC27513 United States

The information about pavement surface type is rarely available in road network databases of developing countries although it represents a cornerstone of the design of efficient mobility systems. This research develops an automatic classification algorithm for road pavement which makes use of satellite images to recognize road segment as paved or unpaved. The proposed methodology is based on an object-oriented approach, so that each road is classified by looking at the distribution of its pixels in the RGB space. The proposed approach is proven to be accurate, inexpensive, and can be straightforwardly extended from the single case study of Greater Maputo to other cities. Copyright © 2024, The Authors. All rights reserved.

关键词： object-oriented databases

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Large-Scale 3D Shape Reconstruction and Segmentation from ShapeNet Core55

arXiv

引用

arXiv 2017年

作者： Yi, Li Shao, Lin Savva, Manolis Huang, Haibin Zhou, Yang Wang, Qirui Graham, Benjamin Engelcke, Martin Klokov, Roman Lempitsky, Victor Gan, Yuan Wang, Pengyu Liu, Kun Yu, Fenggen Shui, Panpan Hu, Bingyang Zhang, Yan Li, Yangyan Bu, Rui Sun, Mingchao Wu, Wei Jeong, Minki Choi, Jaehoon Kim, Changick Geetchandra, Angom Murthy, Narasimha Ramu, Bhargava Manda, Bharadwaj Ramanathan, M. Kumar, Gautam P, Preetham Srivastava, Siddharth Bhugra, Swati Lall, Brejesh Häne, Christian Tulsiani, Shubham Malik, Jitendra Lafer, Jared Jones, Ramsey Li, Siyuan Lu, Jie Jin, Shi Yu, Jingyi Huang, Qixing Kalogerakis, Evangelos Savarese, Silvio Hanrahan, Pat Funkhouser, Thomas Su, Hao Guibas, Leonidas Stanford University Princeton University University of Massachusetts-Amherst Tsinghua University Facebook Ai Research University of Oxford Skolkovo Institute of Science and Technology Nanjing University Shandong University Korea Advanced Institute of Science and Technology Indian Institute of Technology Madras Uc San Diego Indian Institute of Technology Delhi Uc Berkeley Imbellus ShanghaiTech University University of Texas Austin United States

We introduce a large-scale 3D shape understanding benchmark using data and annotation from ShapeNet 3D object database. The benchmark consists of two tasks: Part-level segmentation of 3D shapes and 3D reconstruction from single view images. Ten teams have participated in the challenge and the best performing teams have outperformed state-of-the-art approaches on both tasks. A few novel deep learning architectures have been proposed on various 3D representations on both tasks. We report the techniques used by each team and the corresponding performances. In addition, we summarize the major discoveries from the reported results and possible trends for the future work in the field. Copyright © 2017, The Authors. All rights reserved.

关键词： object-oriented databases

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THE 3DIS - AN EXTENSIBLE object-oriented INFORMATION MANAGEMENT ENVIRONMENT

引用

ACM TRANSACTIONS ON INFORMATION SYSTEMS 1989年第4期7卷 339-377页

作者： AFSARMANESH, H MCLEOD, D UNIV SO CALIF DEPT COMP SCILOS ANGELESCA 90089

The 3-Dimensional Information Space (3DIS) is an extensible object-oriented framework for infor- mation management. It is specifically oriented toward supporting the database requirements for data- intensive information system applications in which (1) information objects of various levels of abstraction and modalities must be accommodated, (2) descriptive and structural information (metadata) is rich and dynamic, and (3) users who are not database experts must be able to design, manipulate, and evolve databases. In response to these needs, the 3DIS provides an approach in which data and the descriptive information about data are handled uniformly in an extensible framework. The 3DIS provides a simple, geometric, and formal representation of data which forms a basis for understanding, defining, and manipulating databases. Several prototype implementations based upon the 3DIS have been designed and implemented and are in experimental use.

关键词： Extensible database systems Knowledge Representation Office information systems object-oriented databases

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Dynamic and Scalable Data Preparation for object-Centric Process Mining

arXiv

引用

arXiv 2024年

作者： Bosmans, Lien Peeperkorn, Jari Goossens, Alexandre Lugaresi, Giovanni De Smedt, Johannes De Weerdt, Jochen Business & Data Analyst Randstad Digital Leuven Belgium KU Leuven Leuven Belgium KU Leuven Leuven Belgium

object-centric process mining is emerging as a promising paradigm across diverse industries, drawing substantial academic attention. To support its data requirements, existing object-centric data formats primarily facilitate the exchange of static event logs between data owners, researchers, and analysts, rather than serving as a robust foundational data model for continuous data ingestion and transformation pipelines for subsequent storage and analysis. This focus results into suboptimal design choices in terms of flexibility, scalability, and maintainability. For example, it is difficult for current object-centric event log formats to deal with novel object types or new attributes in case of streaming data. This paper proposes a database format designed for an intermediate data storage hub, which segregates process mining applications from their data sources using a hub-and-spoke architecture. It delineates essential requirements for robust object-centric event log storage from a data engineering perspective and introduces a novel relational schema tailored to these requirements. To validate the efficacy of the proposed database format, an end-to-end solution is implemented using a lightweight, open-source data stack. Our implementation includes data extractors for various object-centric event log formats, automated data quality assessments, and intuitive process data visualization capabilities. © 2024, CC BY.

关键词： object-oriented databases

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