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Routine development of objectively derived search strategies
No full textBACKGROUND:Over the past few years, information retrieval has become more and more professionalized and information specialists are considered full members of a research team conducting systematic reviews. Research groups preparing systematic reviews and clinical practice guidelines have been the driving force in the development of search strategies, but open questions remain regarding the transparency of the development process and the available resources. An empirically guided approach to the development of a search strategy provides a way to increase transparency and efficiency.METHODS:The aim of this paper is to describe the empirically guided development process for search strategies as applied by the German Institute for Quality and Efficiency in Health Care (Institut fur Qualitat und Wirtschaftlichkeit im Gesundheitswesen, IQWiG). This strategy consists of the following steps: generation of a test set, as well as development, validation, and standardized documentation of the search strategy.RESULTS:We illustrated our approach by means of an example, i.e. a search for literature on brachytherapy in patients with prostate cancer. For this purpose, a test set was generated including a total of 38 references from 3 systematic reviews. The development set for the generation of the strategy included 25 references. After application of text-analytic procedures a strategy was developed including all references of the development set. In order to test the search strategy on an independent set of references, the remaining 13 references from the test set (validation set) were used; the validation set was also completely identified.DISCUSSION:Our conclusion is that an objectively derived approach, similar to that used in search filter development, is a feasible way to develop and validate reliable search strategies. Besides creating high-quality strategies, the widespread application of this approach would result in a substantial increase in the transparency of the development process of search strategies
Abschlussbericht des DFG-geförderten Projektes "Aufbau der Virtuellen Fachbibliothek Sportwissenschaft" 01.02.2006 – 31.01.2008
Get PDFInhalt:
1 Allgemeine Angaben
1.1 Allgemeine Angaben
1.2 Mittelverwendung der DFG-Fördersumme
2 Angaben zum Projekt, Projektverlauf und zu den im
Berichtszeitraum erreichten Projektergebnissen
2.1 Berichtszeitraum
2.2 Projektdarstellung – Arbeits- und Ergebnisbericht
2.3 Arbeitsschritte im Berichtszeitraum
2.3.1 ZBS
2.3.2 BISp
2.3.3 IAT
2.3.4 dvs
2.3.5 FES
2.4 Eigenleistungen
2.4.1 ZBS
2.4.2 BISp
2.4.3 IAT
2.4.4 dvs
2.5 Besonderheiten des Projektes
3 Öffentlichkeitsarbeit
4 Weitere Arbeiten und Planungen – Nachhaltigkeit
5 Abschließende Bemerkungen
6 Unterschrift
7 Anhang: Veröffentlichunge
Virtuelle Fachbibliothek Sportwissenschaft (ViFa Sport) - 6 Monate Online
Get PDFIm Rahmen der Eröffnungsveranstaltung des dvs-Hochschultages in Hamburg am 26.9.2007 wurde
die „Virtuelle Fachbibliothek Sportwissenschaft“ (ViFa Sport) der Öffentlichkeit übergeben. Mit
der „Virtuellen Fachbibliothek Sportwissenschaft“ wird die überregionale Literaturversorgung – sowohl
mit konventionellen als auch mit digitalen Informationsressourcen – verbessert und ausgeweitet.
So sind in dem Projekt, für das die Zentralbibliothek der Sportwissenschaften (Köln) die Federführung
hatte, und das gemeinsam mit den Projektpartnern Bundesinstitut für Sportwissenschaft
(Bonn), Institut für Angewandte Trainingswissenschaft (Leipzig), Deutsche Vereinigung für Sportwissenschaft
und der Bibliothek der Friedrich-Ebert-Stiftung (Bonn) durchgeführt wurde, auch neue
Dienste entstanden, die die bisherigen Angebote (Bibliothekskataloge der ZB Sport und der ZB
Med, Datenbanken des BISp und des IAT) ergänzen. Hier sind insbesondere der Fachinformationsführer
Sport für Internetquellen und ein so genannter „Current-Contents-Dienst“ für neueste
Zeitschriftenartikel zu nennen. Auch der Bibliothekskatalog der Zentralbibliothek für Medizin wurde
eingebunden und liefert so reichhaltige Quellen aus dem Bereich der sportmedizinischen Forschung.
Durch die Integration der ViFa Sport in das Wissenschaftsportal VASCODA ist zudem die
interdisziplinäre Vernetzung mit anderen Wissenschaftsgebieten gewährleistet. Neben einer allgemeinen
Einführung in das Projekt stellt der Beitrag die wichtigsten Funktionalitäten und Suchmöglichkeiten
vor. Zudem werden die bisherigen Rückmeldungen aus der Fachöffentlichkeit vorgestellt,
Verbesserungsmöglichkeiten diskutiert sowie die Nachhaltigkeitsbemühungen der Projektgemeinschaft
präsentiert
Zwischenbericht aus der Virtuellen Fachbibliothek Sportwissenschaft
No full textVeröffentlicht in: OSSWALD, Achim; STEMPFHUBER, Maximilian; WOLFF, Christian (Hrsg.) (2007). Open Innovation. Proc. 13. Jahrestagung der IuK-Initiative Wissenschaft. Konstanz: UVK, 423-426
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Prospective comparison of search strategies for systematic reviews: an objective approach yielded higher sensitivity than a conceptual one
No full textAbstractBackgroundIn the development of search strategies for systematic reviews, “conceptual approaches” are generally recommended to identify appropriate search terms for those parts of the strategies for which no validated search filters exist. However, “objective approaches” based on search terms identified by text analysis are increasingly being applied.ObjectivesTo prospectively compare an objective with a conceptual approach for the development of search strategies.MethodsTwo different MEDLINE search strategies were developed in parallel for five systematic reviews covering a range of topics and study designs. The Institute for Quality and Efficiency in Health Care (IQWiG) applied an objective approach, and external experts applied a conceptual approach for the same research questions. For each systematic review, the citations retrieved were combined and the overall pool of citations screened to determine sensitivity and precision.ResultsThe objective approach yielded a weighted mean sensitivity and precision of 97% and 5%. The corresponding values for the conceptual approach were 75% and 4%.ConclusionOur findings indicate that the objective approach applied by IQWiG for search strategy development yields higher sensitivity than and similar precision to a conceptual approach. The main advantage of the objective approach is that it produces consistent results across searches
No suitable precise or optimized epidemiologic search filters were available for bibliographic databases
No full textAbstractObjectivesTo determine a suitable approach to a systematic search for epidemiologic publications in bibliographic databases. For this purpose, suitable sensitive, precise, and optimized filters were to be selected for MEDLINE searches. In addition, the relevance of bibliographic databases was determined.Study Design and SettingEpidemiologic systematic reviews (SRs) retrieved in a systematic search and company dossiers were screened to identify epidemiologic publications (primary studies and SRs) published since 2007. These publications were used to generate a test and validation set. Furthermore, each SR's search strategy was reviewed, and epidemiologic filters were extracted. The search syntaxes were validated using the relative recall method.ResultsThe test set comprises 729 relevant epidemiologic publications, of which 566 were MEDLINE-indexed. About 27 epidemiologic filters were extracted. One suitable sensitive filter was identified (Larney et al. 2013: 95.94% sensitivity). Precision was presumably underestimated so that no precise or optimized filters can be recommended. About 77.64% of the publications were found in MEDLINE.ConclusionThere is currently no suitable approach to conducting efficient systematic searches for epidemiologic publications in bibliographic databases. The filter by Larney et al. (2013) can be used for sensitive MEDLINE searches. No robust conclusions can be drawn on precise or optimized filters. Additional search approaches should be considered
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