Question-answering systems as efficient sources of terminological information: an evaluation

Background: Question‐answering systems (or QA Systems) stand as a new alternative for Information Retrieval Systems. Most users frequently need to retrieve specific information about a factual question to obtain a whole document. Objectives: The study evaluates the efficiency of QA systems as terminological sources for physicians, specialised translators and users in general. It assesses the performance of one open‐domain QA system, START, and one restricted‐domain QA system, MedQA. Method: The study collected two hundred definitional questions (What is…?), either general or specialised, from the health website WebMD. Sources used by the open‐domain QA system, START, and the restricted‐domain QA system, MedQA, were studied to retrieve answers, and later a range of evaluation measures (precision, Mean Reciprocal Rank, Total Reciprocal Rank, First Hit Success) were applied to mark the quality of answers. Results: It was established that both systems are useful in the retrieval of valid definitional healthcare information, with an acceptable degree of coherent and precise responses from both. The answers supplied by MedQA were more reliable that those of START in the sense that they came from specialised clinical or academic sources, most of them showing links to further research articles. Conclusions: Results obtained show the potential of this type of tool in the more general realm of information access, and the retrieval of health information. They may be considered a good, reliable and reasonably precise alternative in alleviating the information overload. Both QA systems can help professionals and users can obtain healthcare information.     

Website creation and resource management: developing collaborative strategies for asynchronous interaction with library users

Objective: To make electronic resources available to library users while effectively harnessing intellectual capital within the library, ultimately fostering the library’s use of technology to interact asynchronously with its patrons (users). Methods: The methods used in the project included: (1) developing a new library website to facilitate the creation, management, accessibility, maintenance and dissemination of library resources; and (2) establishing ownership by those who participated in the project, while creating effective work allocation strategies through the implementation of a content management system that allowed the library to manage cost, complexity and interoperability. Results: Preliminary results indicate that contributors to the system benefit from an increased understanding of the library’s resources and add content valuable to library patrons. These strategies have helped promote the manageable creation and maintenance of electronic content in accomplishing the library’s goal of interacting with its patrons. Conclusions: Establishment of a contributive system for adding to the library’s electronic resources and electronic content has been successful. Further work will look at improving asynchronous interaction, particularly highlighting accessibility of electronic content and resources.     

网络环境下信息检索与利用课程教学模式探讨与实践

文章探讨了网络环境下信息检索与利用课程的教学模式.这种模式以建构主义学习理论与教学理论为指导,以培养学生学习兴趣,加强学生的实践操作为核心内容.主要由兴趣教学与实践教学两部分组成,贯穿于课前准备、课堂教学、实践环节、课程考核等教学过程.     

Patient-based benefit-risk assessment of medicines: development,refinement, and validation of a content search strategy to retrieve relevant studies

Introduction:Poor indexing and inconsistent use of terms and keywords may prevent efficient retrieval of studies on the patient-based benefit-risk assessment (BRA) of medicines. We aimed to develop and validate an objectively derived content search strategy containing generic search terms that can be adapted for any search for evidence on patient-based BRA of medicines for any therapeutic area.Methods:We used a robust multistep process to develop and validate the content search strategy: (1) we developed a bank of search terms derived from screening studies on patient-based BRA of medicines in various therapeutic areas, (2) we refined the proposed content search strategy through an iterative process of testing sensitivity and precision of search terms, and (3) we validated the final search strategy in PubMed by firstly using multiple sclerosis as a case condition and secondly computing its relative performance versus a published systematic review on patient-based BRA of medicines in rheumatoid arthritis.Results:We conceptualized a final search strategy to retrieve studies on patient-based BRA containing generic search terms grouped into two domains, namely the patient and the BRA of medicines (sensitivity 84%, specificity 99.4%, precision 20.7%). The relative performance of the content search strategy was 85.7% compared with a search from a published systematic review of patient preferences in the treatment of rheumatoid arthritis. We also developed a more extended filter, with a relative performance of 93.3% when compared with a search from a published systematic review of patient preferences in lung cancer.     

A Review of the OvidSP Platform

ABSTRACT

As part of its mission to advance the technological capabilities of its products, Ovid introduced a redesign of its database platform in fall 2007. The platform redesign brought new features and enhancements to an already robust system. The transition between Ovid Gateway and the OvidSP platform was orchestrated seamlessly. With the OvidSP platform came innovative changes such as the incorporation of Natural Language Processing associated with the new Basic Search mode. Discussed are OvidSP features, advantages and disadvantages of the new platform, customizable settings, and future direction.     

Updated generic search filters for finding studies of adverse drug effects in Ovid medline and Embase may retrieve up to 90% of relevant studies

Background

The most current objectively derived search filters for adverse drug effects are 15 years old and other strategies have not been developed and tested empirically.

Objective

To develop and validate search filters to retrieve evidence on adverse drug effects from Ovid medline and Ovid Embase.

Methods

We identified systematic reviews of adverse drug effects in Epistemonikos. From these reviews, we collated their included studies which we then randomly divided into three tests and one validation set of records. We constructed a search strategy to maximise relative recall using word frequency analysis with test set one. This search strategy was then refined using test sets two and three and validated on the final set of records.

Results

Of 107 systematic reviews which met our inclusion criteria, 1948 unique included studies were available from medline and 1980 from Embase. Generic adverse drug effects searches in medline and Embase achieved 90% and 89% relative recall, respectively. When specific adverse effects terms were added recall was improved.

Conclusion

We have derived and validated search filters that retrieve around 90% of records with adverse drug effects data in medline and Embase. The addition of specific adverse effects terms is required to achieve higher recall.     

The development of a blended learning approach to delivering information skills training to large health related student audiences with limited staff resource

This feature considers the challenges that academic librarians are increasingly being faced with in the delivery of information skills training to large student numbers with limited time and staff resources. A case study is presented of how an academic liaison librarian used a blended learning approach and innovative teaching practice to successfully deliver information skills training to large student numbers within the Faculty of Health and Social Care at Hull University.     

基于服务平台和优质数据,借助移动传播提升科技期刊信息服务能力

介绍中华医学会系列杂志近年来借助云技术的发展加强平台建设,通过优质数据生产提升出版效率,以及利用移动传播手段加强期刊内容、学术会议的宣传等方面的实践,探讨科技期刊如何在泛在网络环境下加强数字化出版资源的组织、管理和传播,提升数据质量,完善服务功能,拓展传播模式和途径,全面提升信息服务品质.提出了服务创新应坚持以用户需求为中心,结合互联网+做好连接服务,构建基于知识挖掘和社区交互的主动服务模式.