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: 28. April 2022)
1Fonseca, F. ; Marcinkowski, M. ; Davis, C.: Cyber-human systems of thought and understanding.
In: Journal of the Association for Information Science and Technology. 70(2019) no.4, S.402-411.
Abstract: The present challenge faced by scientists working with Big Data comes in the overwhelming volume and level of detail provided by current data sets. Exceeding traditional empirical approaches, Big Data opens a new perspective on scientific work in which data comes to play a role in the development of the scientific problematic to be developed. Addressing this reconfiguration of our relationship with data through readings of Wittgenstein, Macherey, and Popper, we propose a picture of science that encourages scientists to engage with the data in a direct way, using the data itself as an instrument for scientific investigation. Using GIS as a theme, we develop the concept of cyber-human systems of thought and understanding to bridge the divide between representative (theoretical) thinking and (non-theoretical) data-driven science. At the foundation of these systems, we invoke the concept of the "semantic pixel" to establish a logical and virtual space linking data and the work of scientists. It is with this discussion of the relationship between analysts in their pursuit of knowledge and the rise of Big Data that this present discussion of the philosophical foundations of Big Data addresses the central questions raised by social informatics research.
Inhalt: Vgl.: https://onlinelibrary.wiley.com/doi/10.1002/asi.24132.
Anmerkung: Beitrag eines Special issue on social informatics of knowledge
Themenfeld: Data Mining
Wissenschaftsfach: Informatik ; Philosophie
2Davis, C.H.: Indexing and index editing at Chemical Abstracts before the Registry System.
In: ¬The history and heritage of scientific and technological information systems: Proceedings of the 2002 Conference. Ed. by W. Boyd Rayward, Mary Ellen Bowden. Medford, NJ : Information Today, 2004. S.182-189.
(ASIS & monograph series)
Anmerkung: Auch unter: http://www.chemheritage.org/events/asist2002/15-davis.pdf
Objekt: Chemical abstracts
3Sun, Q. ; Shaw, D. ; Davis, C.H.: ¬A model for estimating the occurence of same-frequency words and the boundary between high- and low-frequency words in texts.
In: Journal of the American Society for Information Science. 50(1999) no.3, S.280-286.
Abstract: A simpler model is proposed for estimating the frequency of any same-frequency words and identifying the boundary point between high-frequency words and low-frequency words in a text. The model, based on a 'maximum-ranking method', assigns ranks to the words and estimates word frequency by a formula. The boundary value between high-frequency and low-frequency words is obtained by taking the square root of the number of different words in the text. This straightforward model was used successfully with both English and Chinese texts
4Davis, C.H. ; McKim, G.W.: Systematic weighting and ranking : cutting the Gordian knot.
In: Journal of the American Society for Information Science. 50(1999) no.7, S.626-628.
Abstract: A powers-of-two algorithm is described that automatically creates discrete, well-defined, and unique result sets, displaying them in decreasing order of likely relevance. All computations are transparent, and a simple query form allows the searcher to focus on the choice of terms and their sequence - an implicit indicator of their relative importance. The program can be used with traditional databases or with search engines designed for the WWW. It also can be used with an intelligent agent to search the Web with a pushdown store, returning only those items that best reflect the searcher's stated interests
Anmerkung: Vgl.: http://www.clarit.com/clhtml/h-weight.html (CLARIT); http://shakt.lib.indiana.edu/~swear/ (SWEAR)
Objekt: CLARIT ; SWEAR
5Davis, C.H.: From document retrieval to Web browsing : some universal concerns.
In: Journal of information; communication; and library science. 3(1997) no.3, S.3-10.
Abstract: Computer based systems can produce enourmous retrieval sets even when good search logic is used. Sometimes this is desirable, more often it is not. Appropriate filters can limit search results, but they represent only a partial solution. Simple ranking techniques are needed that are both effective and easily understood by the humans doing the searching. Optimal search output, whether from a traditional database or the Internet, will result when intuitive interfaces are designed that inspire confidence while making the necessary mathematics transparent. Weighted term searching using powers of 2, a technique proposed early in the history of information retrieval, can be simplifies and used in combination with modern graphics and textual input to achieve these results
Themenfeld: Internet ; Retrievalstudien
7Davis, C.K.: So what about tele-education anyway.
In: Information management. 9(1996) nos.3/4, S.17-18,22.
Abstract: Distance education involves delivering education through interactive telecommunications media. This interactive model of distance learning is not technically feasible yet, but transitional approaches are being pursued. Gives examples. Higher education needs to go along this road because of financial incentives. It will have fundamental impact on faculty as their visibility increases. Despite worries over the effectiveness of this education medium, the economic necessities will drive a move toward the distance education paradigm
9Davis, C.H. ; Shaw, D.: Comparison of retrieval system interfaces using an objective measure of screen design effectiveness.
In: Library and information science research. 11(1989) no.4, S.325-334.
Abstract: Many evaluations of screen design for computer system interfaces are subjective. At best, they consist of sophisticated measures of user behaviour based on instruments devised by cognitive scientists: at worst, they represent only the preconceived notions of software designers. 2 straightforward experiments are described that use tallies of keyboarding errors as a measure of interface effectiveness. By programming the computer to keep such tallies during the input of search logic for a retrieval system, it is possible to obtain objectives and empirically based data for comparing the effectiveness of different interface designs