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1997年Data warehousing市场增长34%

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维普期刊数据库

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电子科技 1998年第4期 1-1页

仓储中基于多智能体深度强化学习的多AGV路径规划

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Semi-Closed Cube： An Effective Approach to Trading Off Data Cube Size and Query Response Time

建模与仿真 2023年第6期12卷 5294-5302页

作者：王梅芳关月贵州大学大数据与信息工程学院，贵州贵阳

随着工业自动化和物流行业的迅速发展，自动引导车辆(Automated Guided Vehicle, AGV)在物流仓库中的路径规划已成为确保运输效率和准确性的关键环节。尽管近年来已经有很多策略被提出，但多AGV系统在复杂的物流环境中仍然频繁地出现碰... 详细信息

随着工业自动化和物流行业的迅速发展，自动引导车辆(Automated Guided Vehicle, AGV)在物流仓库中的路径规划已成为确保运输效率和准确性的关键环节。尽管近年来已经有很多策略被提出，但多AGV系统在复杂的物流环境中仍然频繁地出现碰撞、路径冲突以及控制迟延等问题。鉴于此，本研究提出了一种基于多智能体深度强化学习(Multi Agent Deep Reinforcement Learning, MADRL)的路径规划方法，以期解决多AGV之间的相互协调问题并提高其路径规划效率。为验证所提方法的有效性，我们采用了与遗传算法(Genetic Algorithm, GA)的比较实验。结果显示，基于MADRL的策略在整体运输效率上实现了28%的提升，并在碰撞事件上有了明显的减少。

关键词：路径规划 MADRL AGV 仓储 Path Planning MADRL AGV warehousing

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Journal of Computer Science & Technology 2005年第3期20卷 367-372页

作者： Sheng-EnLi ShanWang DepartmentofComputerScienceandTechnology ShandongInstituteofArchitectureandEngineeringJinan250014P.R.China／／SchoolofInformationRenminUniversityBeijing100872P.R.China SchoolofInformation RenminUniversityBeijing100872P.R.China

The results of data cube will occupy huge amount of disk space when the base table is of a large number of attributes. A new type of data cube, compact data cube like condensed cube and quotient cube, was proposed to solve the problem. It compresses data cube dramatically. However, its query cost is so high that it cannot be used in most applications. This paper introduces the semi-closed cube to reduce the size of data cube and achieve almost the same query response time as the data cube does. Semi-closed cube is a generalization of condensed cube and quotient cube and is constructed from a quotient cube. When the query cost of quotient cube is higher than a given threshold, semi-closed cube selects some views and picks a fellow for each of them. All the tuples of those views are materialized except those closed by their fellows. To find a tuple of those views, users only need to scan the view and its fellow. Thus, their query performance is improved. Experiments were conducted using a real-world data set. The results show that semi-closed cube is an effective approach of data cube.

关键词： warehousing OLAP (on-line analytical processing) data cube

Knowledge Discovery in Data: A Case Study

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Journal of Computer and Communications 2014年第5期2卷 1-28页

作者： Ahmed Hammad Simaan AbouRizk Department of Civil and Environmental Engineering Hole School of Construction Engineering and Management University of Alberta 3-014 Markin/CNRL Natural Resources Engineering Facility Edmonton Alberta Canada HMD Project & Knowledge Management Services Edmonton Canada

It is common in industrial construction projects for data to be collected and discarded without being analyzed to extract useful knowledge. A proposed integrated methodology based on a five-step Knowledge Discovery in Data (KDD) model was developed to address this issue. The framework transfers existing multidimensional historical data from completed projects into useful knowledge for future projects. The model starts by understanding the problem domain, industrial construction projects. The second step is analyzing the problem data and its multiple dimensions. The target dataset is the labour resources data generated while managing industrial construction projects. The next step is developing the data collection model and prototype data ware-house. The data warehouse stores collected data in a ready-for-mining format and produces dynamic On Line Analytical Processing (OLAP) reports and graphs. Data was collected from a large western-Canadian structural steel fabricator to prove the applicability of the developed methodology. The proposed framework was applied to three different case studies to validate the applicability of the developed framework to real projects data.

关键词： Construction Management Project Management Knowledge Management Data warehousing Data Mining Knowledge Discovery in Data (KDD) Industrial Construction Labour Resources

The RFID-Based Manufacturing and Inventory Revolution

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Computer Aided Drafting,Design and Manufacturing 2005年第1期15卷 46-51页

作者： HAMIDULLH Khan Niazi RIAZ Ahmed SHAHID Ikramullah Butt School of Mechanical and Vehicle Engineering Beijing Institute of Technology Beijing 100081 ChinaSchool of Mechanical and Vehicle Engineering Beijing Institute of Technology Beijing 100081 ChinaSchool of Mechanical and Vehicle Engineering Beijing Institute of Technology Beijing 100081 China

Radio frequency identification (RFID) is a contactless form of automatic identification and data capture (AIDC) technology. This paper explores the use of RFID in the new field of manufacturing automation and quality control. This paper consists of five parts. The first part gives a brief background and introduction of technology. The proposed use of RFID technology in the field of manufacturing automation and quality control is discussed in second part. The third part covers its use in the field of warehouse management system. Part four is a local review and analysis of RFID technology in manufacturing and warehousing which would support the potential use of this technology locally at China. The last part of paper gives concluding remarks about the RFID technology with recommendations of RFID use in these areas.

关键词： RFID EPC manufacturing automation warehousing AIDC

Visual Composition of Complex Queries on an Integrative Genomic and Proteomic Data Warehouse

维普期刊数据库

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Engineering（科研） 2013年第10期5卷 94-98页

作者： Francesco Pessina Marco Masseroli Arif Canakoglu Dipartimento di Elettronica e Informazione Politecnico di Milano Milan Italy

Biomedical questions are usually complex and regard several different life science aspects. Numerous valuable and he- terogeneous data are increasingly available to answer such questions. Yet, they are dispersedly stored and difficult to be queried comprehensively. We created a Genomic and Proteomic Data Warehouse (GPDW) that integrates data provided by some of the main bioinformatics databases. It adopts a modular integrated data schema and several metadata to describe the integrated data, their sources and their location in the GPDW. Here, we present the Web application that we developed to enable any user to easily compose queries, although complex, on all data integrated in the GPDW. It is publicly available at http://***/GPKB/. Through a visual interface, the user is only required to select the types of data to be included in the query and the conditions on their values to be retrieved. Then, the Web application leverages the metadata and modular schema of the GPDW to automatically compose an efficient SQL query, run it on the GPDW and show the extracted requested data, enriched with links to external data sources. Performed tests demonstrated efficiency and usability of the developed Web application, and showed its and GPDW relevance in supporting answering biomedical questions, also difficult.

关键词： SQL Query Composition Visual Interface Integrated Data Extraction Data warehousing Bioinformatics Database

Is Free-Software Open-Source ready for Medical Applications?

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Is Free-Software Open-Source ready for Medical Applications?

2008 IEEE International Symposium on IT in Medicine and Education(ITME 2008)

作者： Nicholas Mc Guire Distributed ＆ Embedded System Lab（DSLab） Lanzhou UniversityChina Engineering Research Center of Open Source Software and Real-Time Systems Ministry of EducationLanzhou UniversityChina

While in the past years free-software has gained some acceptance in the domain of medical applications it has been mainly focused on quite typical IT-infrastructure cases -may that be billing systems,data warehousing,databases and content management systems a second area where free software has made prominent entrance has been in the area of imaging and high-volume data *** the area of medical devices,with rare exceptions,free-software is still quite underrepresented -in part due to acceptance but in part also due to plain technical ***/Linux,real-time and embedded variants and many free-software projected have made there way into medical applications -but is Free-software ready to cover the wide area of demands on medical platforms and there applications? The demands of medical platforms stretch more or less the entire range of computational capabilities: * battery powered -robust against power-failures * reliable in rough environment * compliant with safety regulations * robust and secure software platforms * standalone,networked all the way to clusters * extensibility for specialized hardware and software * from head-less to multithread graphical user-interfaces And all this for devices that sometimes only will be built in a few 10s or hundred devices? What advantages could free-software have here -what limitations are there -where do we still need to do *** software is not the answer to all problems in medical computing （or in any other area） -but it has a plethora of innovative and powerful solutions to *** will outline some of them along with some outstanding medical applications that have been built on free-software components.

关键词： Open source software Medical services Biomedical equipment Biomedical imaging Software safety Robustness warehousing Image databases Content management Data processing

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基于SSIS的商业智能平台设计与实现

信息与电脑（理论版） 2010年第9期 67-67页

作者：袁琳琳陈笑蓉贵州大学计算机科学与信息学院贵州贵阳550025

首先提出在贵州省高速公路商业智能平台应用SSIS的意义,其次介绍SSIS;然后介绍了贵州省高速公路商业智能平台的整体设计;最后介绍基于SSIS的贵州省高速公路商业智能平台的实现。

关键词： SSIS ETL Data warehousing Business Intelligence 高速