Unique-order interpolative coding for fast querying and space-efficient indexing in information retrieval systems     

Cher-Sheng Cheng  Jean Jyh-Jiun Shann  Chung-Ping Chung 《Information processing & management》2006

This paper presents a size reduction method for the inverted file, the most suitable indexing structure for an information retrieval system (IRS). We notice that in an inverted file the document identifiers for a given word are usually clustered. While this clustering property can be used in reducing the size of the inverted file, good compression as well as fast decompression must both be available. In this paper, we present a method that can facilitate coding and decoding processes for interpolative coding using recursion elimination and loop unwinding. We call this method the unique-order interpolative coding. It can calculate the lower and upper bounds of every document identifier for a binary code without using a recursive process, hence the decompression time can be greatly reduced. Moreover, it also can exploit document identifier clustering to compress the inverted file efficiently. Compared with the other well-known compression methods, our method provides fast decoding speed and excellent compression. This method can also be used to support a self-indexing strategy. Therefore our research work in this paper provides a feasible way to build a fast and space-economical IRS.  相似文献   

涉嫌犯罪人身份的确立     

刘梅湘  谌东华 《大连大学学报》2007,28(5):69-74

犯罪嫌疑人与被怀疑有犯罪嫌疑的人之间存在区别。对于犯罪的"初查对象"现行法律未给予相应的名称规定,犯罪嫌疑人的身份在实务中也有扩大化的趋势,造成立案的随意,使"犯罪嫌疑人"的权益得不到应有的保障。"强制措施"的滥用,造成了犯罪嫌疑人身份的错用。犯罪嫌疑人的称呼与现阶段刑事案件的立案审批相配套,涉嫌犯罪人身份的确立对刑事诉讼法的修订具有参考价值。改称涉嫌犯罪人有利于保障涉嫌刑事追诉程序中的人的权益,具有时代意义,是无罪推定原则精神之体现。  相似文献   

办公自动化环境下高校电子文件的归档与管理研究     

蔡艳莉 《成都航空职业技术学院学报》2011,27(4):68-71

随着计算机网络和通讯技术的进步,办公自动化系统在高校广泛应用,产生了大量电子文件。电子文件的归档与管理成为高校档案管理的重要组成部分。目前,高校电子文件档案管理存在诸多问题,要根据档案管理的要求和电子文件的特性做好电子文件的归档和管理。  相似文献   

浅析新时期高校人事档案管理工作     

柏涛 《重庆职业技术学院学报》2011,20(3):99-100

在人们对人事档案意识越来越淡薄的今天。档案管理人员要通过自身努力转变观念,以更好地推动这项工作的发展。首先要从理清职责,强化责任心,发挥管理人员的主观能动性入手,再辅以规范的规章制度,并且要不断加强业务学习,提升各方面素质。只要踏实有效地做好这些工作,人事档案就一定能恢复它应有的活力。  相似文献   

The Role of Anatomy Computer-Assisted Learning on Spatial Abilities of Medical Students     

Bruno Guimarães  João Firmino-Machado  Stanislav Tsisar  Benedita Viana  Marco Pinto-Sousa  Pedro Vieira-Marques  Ricardo Cruz-Correia  Maria Amélia Ferreira 《Anatomical sciences education》2019,12(2):138-153

Currently, medical education context poses different challenges to anatomy, contributing to the introduction of new pedagogical approaches, such as computer-assisted learning (CAL). This approach provides insight into students' learning profiles and skills that enhance anatomy knowledge acquisition. To understand the influence of anatomy CAL on spatial abilities, a study was conducted. A total of 671 medical students attending Musculoskeletal (MA) and Cardiovascular Anatomy (CA) courses, were allocated to one of three groups (MA Group, CA Group, MA + CA Group). Students' pre-training and post-training spatial abilities were assessed through Mental Rotations Test (MRT), with scores ranging between 0-24. After CAL training sessions, students' spatial abilities performance improved (9.72 ± 4.79 vs. 17.05 ± 4.57, P < 0.001). Although male students in both MA Group and CA Group show better baseline spatial abilities, no sex differences were found after CAL training. The improvement in spatial abilities score between sessions (Delta MRT) was correlated with Musculoskeletal Anatomy training sessions in MA Group (r = 0.333, P < 0.001) and MA + CA Group (r = 0.342, P < 0.001), and with Cardiovascular Anatomy training sessions in CA Group (r = 0.461, P = 0.001) and MA + CA Group (r = 0.324, P = 0.001). Multiple linear regression models were used, considering the Delta MRT as dependent variable. An association of Delta MRT to the amount of CAL training and the baseline spatial abilities was observed. The results suggest that CAL training in anatomy has positive dose-dependent effect on spatial abilities.  相似文献   

关于Pro/E环境变量设置的探讨     

刘立新  任海东 《张家口职业技术学院学报》2011,24(2):60-63

在运用Pro/E设计软件将三维模型转换为工程图时,正确设置系统环境变量和工程图环境变量,可以快速绘制出符合我国国家标准的工程图。运用举例方法探讨Pro/E中由三维模型转化工程图时有关变量的具体设置,并使设置的变量在启动Pro/E的同时生效,从而提高绘制工程图的效率。  相似文献   

国内外教师档案研究进展     

段凤 《邢台职业技术学院学报》2011,28(6):33-35

在分析了教师档案基本内涵基础上,文章梳理了国内外教师档案研究的基本现状与研究进展,总结归纳了教师档案研究所取得的基本成果,以及教师档案利用与管理中存在的问题。借鉴国外文件中心理论,实行纸质档案和电子档案互补和并存并共同归档保存的方式,才能促进教师档案更好的管理和利用。  相似文献   

Cloud-based big data analytics for customer insight-driven design innovation in SMEs     

《International Journal of Information Management》2020

Fast development of IT and ICT facilitate customers to post a large volume of their concerns and expectation online, which are widely accepted to be a valuable resource for product designers. However, it is found that only a small number of small and medium-sized enterprises (SMEs) have capabilities to leverage customer online insights for design innovation, which often demonstrate a significant share in national economies growth. To discover the beneath reasons regarding the barrier that prevent them to make effective utilization, in this study, as a concrete example, manufacturing SMEs in the South Wales and Greater Manchester industrial areas of the UK are focused and their potential motivations for using and knowledge of big data-based customer analytics are investigated. An exploratory survey was conducted in terms of the type of customer data they have, the storage approaches, the volume of customer data, etc. Next, a carefully devised exploratory study was undertaken to understand how SMEs perceive the relations between customer data and product design, how about their expectations from big customer data analytics and what really challenges SMEs to exploit the value of big customer data. Besides, a demonstration platform is developed to present SMEs an automatic process of analysing customer online reviews and the capacity on customer insights acquisition and strategic decision making. Finally, findings from two focus groups indicate the different managerial and technical considerations required for SMEs considering implementing big data and customer analytics. This study encourages SMEs to welcome big customer data and suggests that a cloud-based approach may be the most appropriate way of giving access to big data analytics techniques.  相似文献   

纸质档案何去何从--数字纸张产业高峰论坛引发的思考     

邹悦 《山西档案》2005,(1):19-22

“数字纸张”正风起云涌，传统纸张(纸质档案)岌岌可危，怎样看待这种趋势，如何融入这种趋势并做出正确的行动是本要讨论的问题。  相似文献   

谈档案事业的社会化     

崔永建 《济宁师范专科学校学报》2004,25(6):94-95

档案工作的发展是与社会统一的,档案事业将服务面扩大到全社会,是档案工作生存的必然之路。档案的宗旨是“以人为本”,必须与时俱进,创新精神加和学态度,运用社会力量,发展档案。  相似文献