Price Index (Citation Recency)
The Price Index measures how strongly a field draws on recent literature by computing the percentage of its references that point to work published within the last few years. Derek de Solla Price, the founder of modern scientometrics, observed that the sciences differ sharply in how immediate their referencing is: hard sciences cite a tight cloud of recent papers at the research front, while humanities scholarship cites a long, even spread of older works. In his 1965 Science paper on the networks of scientific papers he documented this concentration of references on recent years, and in his 1970 essay distinguishing hard science, soft science, technology, and nonscience he formalized the index that now bears his name. Defined as the share of references no older than about five years, the Price Index is a citing-side companion to obsolescence measures: where the cited half-life looks at how the literature ages, the Price Index looks at how recency-focused the citing behavior is.
Kilderegister
Siteringer kopiert ordrett fra metodens kilderegister. Ingen påstandsnivåverifisering er underforstått fra dem.
- Price, D. J. de Solla (1965). Networks of scientific papers. Science, 149(3683), 510-515. · DOI 10.1126/science.149.3683.510
- Price, D. J. de Solla (1970). Citation measures of hard science, soft science, technology, and nonscience. In C. E. Nelson & D. K. Pollock (Eds.), Communication among Scientists and Engineers (pp. 3-22). Lexington, MA: Heath Lexington Books. · ISBN 9780669207095
Kuraterte påstander
Påstander lagret i bevishovedboken, hver med sin egen vurdering.
Denne visningen finner ikke opp en påstandsvurdering når hovedboken ikke har noen.
Relaterte metoder
Generert fra metodegrafen og vist som maskinforslåtte relasjoner – ingen bevispåstand er underforstått.