Consortial Ebook Archiving Environmental Scan

Academic libraries and consortia are spending the vast majority of their material budgets on digital content, including ebooks. A review of ebook preservation activities for the North American library consortia is provided along with a look at the major preservation services such as Portico, CLOCKSS and HathiTrust. Publishers and ebook aggregators are also examined to provide a broad environmental scan of the current ebook preservation activities and risks.     

Partly Cloudy With a Chance of Entertainment: An Academic Library's Experience With a Popular Reading Ebook Resource

ABSTRACT

Ebooks pose many challenges in library collection development, mostly due to the lack of standards and the many different platforms available. These challenges are faced by both public and academic libraries, but the challenges inherent in collecting popular reading ebooks can be different from the challenges that come with collecting scholarly ebooks. This article describes the purpose and processes behind an academic library, University of Wyoming Libraries, providing popular reading ebooks to its faculty and students, and focuses on the experience of being a 3M Cloud Library early adopter.     

Making Search Engines Notice: An Exploratory Study on Discoverability of DSpace Metadata and PDF Files

ABSTRACT

This study analyzed the search results of four main Internet search engines on three newly created digital collections at Texas Tech University Libraries, in order to assess the search engine indexing on metadata and PDF files of digital items that are published in the institutional repository. The exploratory study found that only one search engine discovered PDF files, while the others only discovered metadata. The results of the study also suggested that metadata and PDF files can supplement each other to facilitate discoverability of the digital collections on search engines, and revealed some findings that are contradictory to conclusions in previous research.     

B2C商城畅销电子图书的分布特征与在线评论解析——以京东为例

[目的/意义]通过对京东商城电子图书特征的数据分析,发现和识别不同类型畅销电子图书在定价、编辑、出版、销售与用户体验等方面的共性特征与差异性。[方法/过程]借助网络爬虫,采集京东商城7个类别销量居前60位的电子书的售价、纸版定价、纸版售价、文件格式与大小、评论数量与评论文本等信息,通过文本挖掘、描述性统计等方法,考察畅销电子书的定价策略、销售数量、文本格式与用户体验。[结果/结论]畅销电子书定价普遍较低,不同类别、特征图书定价略有区别,专业类图书定价高于大众类图书;电子书与纸质书的受众群体存在差异,电子书的销量与其纸版的销量并非成正比关系;EPUB流式文件和PDF版式文件占主导地位,两种格式的用户接受度无明显差异;畅销电子书的用户体验主要集中在"满意度"价格"与"便捷"3个方面。     

Academic Libraries as Digital Gateways: Linking Students to the Burgeoning Wealth of Open Online Collections

ABSTRACT

Digital collections of full-text e-books are proliferating on the Web and provide a wealth of open content for students. To examine whether academic libraries are providing a digital gateway to these resources, ten e-book titles from open digital collections were searched in the online catalogs and Web pages of ten academic libraries serving distance learners. Only three of the digital collection e-books were available from any of the library catalogs, and none were found on library Web pages. Availability of the ten e-book titles through Google and other digital discovery tools also had mixed results. Continued projects for improved delivery of open online content are necessary. In order to fulfill their role as digital gateways for their academic communities, libraries must pursue metadata standards to support cross-searching, collaborative projects, and development of e-resource search software, which integrates with the library catalog.     

基于语义的元数据索引查询方法

针对现有元数据索引方法因其固有的缺陷而难以应用于复杂的语义网络,提出一种新的基于语义的元数 据索引查询方法。该方法以ＲＤＦ图为数据模型,在路径索引的基础上,为元数据建立索引,并通过路径表达式实现元数据的查询。它能有效的促进领域知识的共享和语义表达,提高元数据的检索效率和查准率,为用户和应用提供语义查询和信息汇集能力。     

New Approaches to Subject Indexing at the British Library

The constantly changing metadata landscape means that libraries need to re-think their approach to standards and subject analysis, to enable the discovery of vast areas of both print and digital content. This article presents a case study from the British Library that assesses the feasibility of adopting FAST (Faceted Application of Subject Terminology) to selectively extend the scope of subject indexing of current and legacy content, or implement FAST as a replacement for all LCSH in current cataloging workflows.     

机构知识库集成OpenKOS主题标引与检索聚类服务的实现及应用

主要介绍在机构知识库系统中集成开放知识组织引擎OpenKOS相关功能,利用OpenKOS的开放服务接口对机构知识库中知识产出进行主题标引和提供基于规范主题词的分面浏览,并实现对检索结果进行DDC聚类浏览的服务功能。系统投入应用后初步达到结合传统知识组织方式,对数字资源实现自动标引与自动分类的目标。     

HealthCyberMap: a semantic visual browser of medical Internet resources based on clinical codes and the human body metaphor

OBJECTIVES: HealthCyberMap (HCM-http://healthcybermap.semanticweb.org) is a web-based service for healthcare professionals and librarians, patients and the public in general that aims at mapping parts of the health information resources in cyberspace in novel ways to improve their retrieval and navigation. METHODS AND SERVICE DESCRIPTION: HCM adopts a clinical metadata framework built upon a clinical coding ontology for the semantic indexing, classification and browsing of Internet health information resources. A resource metadata base holds information about selected resources. HCM then uses GIS (Geographic Information Systems) spatialization methods to generate interactive navigational cybermaps from the metadata base. These visual cybermaps are based on familiar medical metaphors. CONCLUSIONS: HCM cybermaps can be considered as semantically spatialized, ontology-based browsing views of the underlying resource metadata base. Using a clinical coding scheme as a metric for spatialization ('semantic distance') is unique to HCM and is very much suited for the semantic categorization and navigation of Internet health information resources. Clinical codes ensure reliable and unambiguous topical indexing of these resources. HCM also introduces a useful form of cyberspatial analysis for the detection of topical coverage gaps in the resource metadata base using choropleth (shaded) maps of human body systems.     

一种基于数字图书馆的文本信息标引技术的改进研究

研究构建了具有位置信息控制的特义禁用词语义环境，进而运用于中文文献元数据CXMARC文本的自动标引和主题信息的数据挖掘，其中研究设计的预处理特义中文禁用字词切分算法SWF，能有效地减少领域的分词歧义性和缩短标引时间，从而改进了传统最大匹配MM算法的自动标引质量和效率。     

基于GEM2.0的教育元数据应用纲要

本文论述了一个适用于高等教育环境的基于GEM2.0的教育元数据应用纲要。文章介绍了它的元数据表、受控词表／编码标准、标引指南和标引界面。元数据表由19个元素和多个扩展字段组成,在GEM2.0的基础上,它补充了课程名称、专业、研究小组、信息类型四个元素和课程教学资料类型、文献类型、工具书类型三个字段,这些元素与字段覆盖了高等教育环境下的教育资源,并可以与主题元素结合帮助用户快速而准确地获取信息。自建的课程教学资料类型、文献类型、工具书类型和信息类型四个受控词表有一定的参考价值。标引指南对元素、字段含义、标引原则和著录方式作了详尽说明。标引界面和工作流程的设计则兼合考虑了普通用户的需求和标引质量的保证。     

数字出版物法定呈缴制度客体研究

为了保存国家数字文化遗产,传承民族记忆,需将法定呈缴制度的客体延伸至数字出版物。通过调研国外典型立法,发现数字出版物概念的内涵发生了显著变化,公开提供获取利用的数字资料都可视为数字出版物,应将其纳入到法定呈缴的客体范围。国际立法经验显示,网络出版物客体的界定是需要解决的核心问题,可以从创建发布者、资源内容角度判断纳入一个国家法定呈缴体系的网络出版物客体。为了适应客体的变化,需要革新法定呈缴实施的方式。图1。表1。参考文献38。     

Assessing Metadata and Controlling Quality in Scholarly Ebooks

This article explores the development and automation of quality assurance procedures for locally loading electronic books (ebooks) on the Ontario Council of University Libraries’ Scholars Portal Platform. The authors conducted a two-phase study of MARC record fields indexed on the platform to detect errors and implement workflow changes to the quality control process. The authors report on this process and the costs involved and suggest that the challenges of ebook metadata are not met by MARC and a new metadata standard should be considered in the near future.     

受控标引和受控词表的应用

本文介绍了受控标引的定义、特点，并对当前关于受控标引和受控语言已经过时的论点进行了反驳，认为受控标引和受控语言具有自然语言所不能代替的优点。文章还论述了受控词表在数据库、搜索引擎、DC元数据中的应用，进一步证明受控语言在当前网络环境下具有一定的地位，认为当前文献信息的组织和利用应该把受控语言和自然语言结合起来。     

Research and usage of collection level metadata in Chinese digital libraries

The World Wide Web and other information technologies have deeply changed our information environment and influenced how we index and access the information we need. The library is a good example of this revolution. Instead of a building that holds books, the library is evolving into an electronic portal to digital materials from across the globe. Facing so many distributed and heterogeneous digital resources, layered metadata are efficient but sophisticated tools that make it easier to find the best information resources. In recent years many types of item-level metadata with which people are familiar have appeared. In contrast to item-level metadata, collection level metadata has not been broadly used, especially in China. By illustrating what a collection is and why we should create collection level metadata, we introduce the research and usage of collection level metadata in China and analyze the problems and limitations of the metadata being used. Some suggestions as to its use are also mentioned.     

数字视频信息的元数据研究

利用元数据对各种资源 (特别是数字化资源、网络资源 )进行全面的描述 ,并据此对资源进行管理和检索 ,一直是最直接、最有效的手段。针对不同的资源类型、不同的用途 ,不同的机构建立了多种不同的元数据标准。本文首先探讨了数字视频信息的描述需求 ,然后分析了目前常见的数字视频信息的元数据和元数据标准 ,最后展望了数字视频信息元数据的发展趋势     

Changing Demand Driven Acquisition Ebook Models: A History and Preliminary Results at the Colorado Alliance of Research Libraries

In 2016, ProQuest started advertising their new Access to Own (ATO) model for ebooks as an alternative to their other Demand Driven Acquisition (DDA) models. The ATO model was touted as applying the cost of loans toward title ownership to balance costs of purchasing and loans. This article shares the Colorado Alliance of Research Libraries' history of ebook DDA and the process of transition to a DDA ATO model.