Market basket analysis of library circulation data

“Market Basket Analysis” algorithms have recently seen widespread use in analyzing consumer purchasing patterns-specifically, in detecting products that are frequently purchased together. We apply the Apriori market basket analysis tool to the task of detecting subject classification categories that co-occur in transaction records of book borrowed form a university library. This information can be useful in directing users to additional portions of the collection that may contain documents relevant to their information need, and in determining a library’s physical layout. These results can also provide insight into the degree of “scatter” that the classification scheme induces in a particular collection of documents

The Computer Science Ontology: A Large-Scale Taxonomy of Research Areas

Ontologies of research areas are important tools for characterising, exploring, and analysing the research landscape. Some fields of research are comprehensively described by large-scale taxonomies, e.g., MeSH in Biology and PhySH in Physics. Conversely, current Computer Science taxonomies are coarse-grained and tend to evolve slowly. For instance, the ACM classification scheme contains only about 2K research topics and the last version dates back to 2012. In this paper, we introduce the Computer Science Ontology (CSO), a large-scale, automatically generated ontology of research areas, which includes about 26K topics and 226K semantic relationships. It was created by applying the Klink-2 algorithm on a very large dataset of 16M scientific articles. CSO presents two main advantages over the alternatives: i) it includes a very large number of topics that do not appear in other classifications, and ii) it can be updated automatically by running Klink-2 on recent corpora of publications. CSO powers several tools adopted by the editorial team at Springer Nature and has been used to enable a variety of solutions, such as classifying research publications, detecting research communities, and predicting research trends. To facilitate the uptake of CSO we have developed the CSO Portal, a web application that enables users to download, explore, and provide granular feedback on CSO at different levels. Users can use the portal to rate topics and relationships, suggest missing relationships, and visualise sections of the ontology. The portal will support the publication of and access to regular new releases of CSO, with the aim of providing a comprehensive resource to the various communities engaged with scholarly data

Ebookmobile: Delivering Subject-Specific Ebooks to Your Inbox

Today\u27s users are overloaded by the massive amount of information available to them, even within their own library\u27s collection. Ebooks cataloged in batches of hundreds (or thousands) make a generic new ebook shelf prohibitively large and mostly uninteresting to a subject researcher. The Ebookmobile helps researchers become aware of new ebooks in the library collection in their specific area of interest, so they can start using them immediately. Ebookmobile checks the Voyager database daily for newly cataloged ebooks and creates feeds for ranges in a classification scheme. Researchers can choose to receive a daily e-mail or subscribe to an RSS feed using their e-mail client or feed reader. Subject librarians may include such feeds on LibGuides as self-updating new ebook shelves

Ebookmobile: Delivering Subject-Specific Ebooks to Your Inbox

Today\u27s users are overloaded by the massive amount of information available to them, even within their own library\u27s collection. Ebooks cataloged in batches of hundreds (or thousands) make a generic new ebook shelf prohibitively large and mostly uninteresting to a subject researcher. The Ebookmobile helps researchers become aware of new ebooks in the library collection in their specific area of interest, so they can start using them immediately. Ebookmobile checks the Voyager database daily for newly cataloged ebooks and creates feeds for ranges in a classification scheme. Researchers can choose to receive a daily e-mail or subscribe to an RSS feed using their e-mail client or feed reader. Subject librarians may include such feeds on LibGuides as self-updating new ebook shelves

Thirty problems for subject interoperability (and a few possible solutions)

Using evidence, and subject terms, drawn from the IRIScotland project, this presentation illustrates and summarises numerous problems that arise when aggregating metadata records from different sources. It aims to identify and classify the causes and consequences of these problems and suggest some ways of improving subject interoperability

Management Matters

New indications of managerial innovations are created and then used to show that changes in organizational technologies are an important source of economic growth. Specifically, the analysis demonstrates that, first, in response to a positive managerial technology shock, output, productivity and hours significantly increase in the short run, second, these types of innovations are as important as non-managerial ones in explaining movements in these variables at business cycle frequencies, and, third, product and process innovations promote the development of new managerial techniques.Business Cycles; Productivity; Management techniques; Technical Change

Volumes of Evidence - Examining Technical Change Last Century Through a New Lens

Although technical change is central in much of modern economics, traditional measures of it are, for a number of reasons, flawed. We discuss in this paper new indicators based on data drawn from the MARC records of the Library of Congress on the number of new technology titles in various fields published in the United States over the course of the last century. These indicators, we argue, overcome many of the shortcomings associated with patents, research and development expenditures, innovation counts, and productivity figures. We find, among other things, the following: the pattern and nature of technical change described by our indicators is, on the whole, consistent with that of other measures; they represent innovation not diffusion; a strong causal relationship between our indicators and changes in TFP and output per capita; innovations in some sub-groups have had a greater impact on output and productivity than others and, moreover, the key players have changed over time. Our indicators can be used to shed light on number of important issues including the empirical relationship between technology shocks and employment, the role of technology in cross-country productivity differences, and the part played by technological change in growing skills premia in the U.S. during the last few decades.Business Cycles, Technical change, productivity, measurement

The Computer Science Ontology: A Comprehensive Automatically-Generated Taxonomy of Research Areas

Ontologies of research areas are important tools for characterising, exploring, and analysing the research landscape. Some fields of research are comprehensively described by large-scale taxonomies, e.g., MeSH in Biology and PhySH in Physics. Conversely, current Computer Science taxonomies are coarse-grained and tend to evolve slowly. For instance, the ACM classification scheme contains only about 2K research topics and the last version dates back to 2012. In this paper, we introduce the Computer Science Ontology (CSO), a large-scale, automatically generated ontology of research areas, which includes about 14K topics and 162K semantic relationships. It was created by applying the Klink-2 algorithm on a very large dataset of 16M scientific articles. CSO presents two main advantages over the alternatives: i) it includes a very large number of topics that do not appear in other classifications, and ii) it can be updated automatically by running Klink-2 on recent corpora of publications. CSO powers several tools adopted by the editorial team at Springer Nature and has been used to enable a variety of solutions, such as classifying research publications, detecting research communities, and predicting research trends. To facilitate the uptake of CSO, we have also released the CSO Classifier, a tool for automatically classifying research papers, and the CSO Portal, a web application that enables users to download, explore, and provide granular feedback on CSO. Users can use the portal to navigate and visualise sections of the ontology, rate topics and relationships, and suggest missing ones. The portal will support the publication of and access to regular new releases of CSO, with the aim of providing a comprehensive resource to the various research communities engaged with scholarly data

Classification systems in medical libraries at University of Zagreb School of Medicine

Prikazom knjižničnih klasifikacija koje su se upotrebljavale u knjižnicama Medicinskog fakulteta Sveučilišta u Zagrebu, Središnjoj medicinskoj knjižnici i Knjižnici “Andrija Štampar”, daje se uvid u klasifikacijske sheme koje su najčešće primjenjivane pri klasifikaciji medicinske građe. Poseban naglasak stavljen je na NLM klasifikaciju (National Library of Medicine Classification) koju danas upotrebljava većina medicinskih knjižnica u Hrvatskoj i svijetu. Uz NLM klasifikaciju i klasifikaciju Kongresne knjižnice (Library of Congress Classification) usko je povezano i predmetno označivanje predmetnicama MeSH tezaurusa (Medical Subject Headings Thesaurus).The paper presents a review of library classification systems used at the University of Zagreb School of Medicine Central Medical Library and the Andrija Štampar Library, and gives an insight into the classification schemes most commonly used in classification of medical publications. Special emphasis is placed on the NLM (National Library of Medicine) classification system which is nowadays used by most medical libraries in Croatia and in the world. Also, we point out that subject indexing using the MeSH thesaurus is closely linked to NLM and LC (Library of Congress) classification systems