Literatur zur Informationserschließung

Diese Datenbank enthält über 40.000 Dokumente zu Themen aus den Bereichen Formalerschließung – Inhaltserschließung – Information Retrieval.

© 2015 W. Gödert, TH Köln, Institut für Informationswissenschaft / Powered by litecat, BIS Oldenburg (Stand: 04. Juni 2021)

Suchergebnisse

• 1
  Wu, S. ; Liu, S. ; Wang, Y. ; Timmons, T. ; Uppili, H. ; Bedrick, S. ; Hersh, W. ; Liu, H,: Intrainstitutional EHR collections for patient-level information retrieval.
  In: Journal of the Association for Information Science and Technology. 68(2017) no.11, S.2636-2648.
  
  Abstract: Research in clinical information retrieval has long been stymied by the lack of open resources. However, both clinical information retrieval research innovation and legitimate privacy concerns can be served by the creation of intrainstitutional, fully protected resources. In this article, we provide some principles and tools for information retrieval resource-building in the unique problem setting of patient-level information retrieval, following the tradition of the Cranfield paradigm. We further include an analysis of parallel information retrieval resources at Oregon Health & Science University and Mayo Clinic that were built on these principles.
  
  Inhalt: Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23884/full.
  
  Anmerkung: Beitrag in einem Special issue on biomedical information retrieval.
  
  Wissenschaftsfach: Medizin
  
  
• 2
  Hersh, W.R. ; Over, P.: Interactivity at the Text Retrieval Conference (TREC).
  In: Information processing and management. 37(2001) no.3, S.365-367.
  
  Themenfeld: Retrievalstudien
  Objekt: TREC
  
  
• 3
  Hersh, W. ; Pentecost, J. ; Hickam, D.: ¬A task-oriented approach to information retrieval evaluation : overview and design for empirical testing.
  In: Journal of the American Society for Information Science. 47(1996) no.1, S.50-56.
  
  Abstract: As retrieval system become more oriented towards end-users, there is an increasing need for improved methods to evaluate their effectiveness. We performed a task-oriented assessment of 2 MEDLINE searching systems, one which promotes traditional Boolean searching on human-indexed thesaurus terms and the other natural language searching on words in the title, abstracts and indexing terms. Medical students were randomized to one of the 2 systems and given clinical questions to answer. The students were able to use each system successfully, with no significant differences in questions correctly answered, time taken, relevant articles retrieved, or user satisfaction between the systems. This approach to evaluation was successful in measuring effectiveness of system use and demonstrates that both types of systems can be used equally well with minimal training
  
  Themenfeld: Retrievalstudien
  
  
• 4
  Hersh, W.R. ; Hickam, D.H.: ¬An evaluation of interactive Boolean and natural language searching with an online medical textbook.
  In: Journal of the American Society for Information Science. 46(1995) no.7, S.478-489.
  
  Abstract: Few studies have compared the interactive use of Boolean and natural language search systems. Studies the use of 3 retrieval systems by senior medical students searching on queries generated by actual physicians in a clinical setting. The searchers were randomized to search on 2 or 3 different retrieval systems: a Boolean system, a word-based natural language system, and a concept-based natural language system. Results showed no statistically significant differences in recall or precision among the 3 systems. Likewise, there is no user preference for any system over the other. The study revealed problems with traditional measures of retrieval evaluation when applied to the interactive search setting
  
  Themenfeld: Retrievalstudien
  
  
• 5
  Hersh, W.R. ; Pentecost, J. ; Hickam, D.H.: ¬A task-oriented approach to retrieval system evaluation.
  In: Forging new partnerships in information: converging technologies. Proceedings of the 58th Annual Meeting of the American Society for Information Science, ASIS'95, Chicago, IL, 9-12 October 1995. Ed.: T. Kinney. Medford, NJ : Learned Information, 1995. S.112-117.
  
  Abstract: There is a need for improved methods to evaluate the effectiveness of end user information retrieval systems. Performs a task oriented assessment of 2 MEDLINE searching systems, one which promotes Boolean searching on human indexed thesaurus terms and the other natural language searching on words in the title, abstract, and indexing terms. Each was used by medical students to answer clinical questions. Students were able to use each system successfully, with no significant differences in questions correctly answered, time taken, relevant articles retrieved, or user satisfaction between the systems. This approach to evaluation was successful in measuring effectiveness of system use and demonstrates that both types of systems can be used equally well with minimal training
  
  Themenfeld: Retrievalstudien
  
  
• 6
  Hersh, W.: Relevance and retrieval evaluation : perspectives from medicine.
  In: Journal of the American Society for Information Science. 45(1994) no.3, S.201-206.
  
  Abstract: The traditional notion of topical relevance has allowed much useful work to be done in the evaluation of retrieval systems, but has limitations for complete assessment of retrieval systems. While topical relevance can be effective in evaluating various indexing and retrieval approaches, it is ineffective for measuring the the impact that systems have on users. An alternative is to use a more situational definition of relevance, which takes account of the impact of the system on the user. Both types of relevance are examined from the standpoint of the medical domain, concluding that each have their appropriate use
  
  
  
• 7
  Hersh, W.R. ; Hickam, D.H.: ¬A comparison of two methods for indexing and retrieval from a full-text medical database.
  In: Proceedings of the 55th Annual Meeting of the American Society for Information Science, Pittsburgh, 26.-29.10.92. Ed.: D. Shaw. Medford, NJ : Learned Information Inc., 1992. S.221-230.
  
  Abstract: Reports results of a study of 2 information retrieval systems on a 2.000 document full text medical database. The first system, SAPHIRE, features concept based automatic indexing and statistical retrieval techniques, while the second system, SWORD, features traditional word based Boolean techniques, 16 medical students at Oregon Health Sciences Univ. each performed 10 searches and their results, recorded in terms of recall and precision, showed nearly equal performance for both systems. SAPHIRE was also compared with a version of SWORD modified to use automatic indexing and ranked retrieval. Using batch input of queries, the latter method performed slightly better
  
  Themenfeld: Automatisches Indexieren ; Indexierungsstudien
  Objekt: SWORD ; SAPHIRE