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- Bradfords_law abstract "Bradford's law is a pattern first described by Samuel C. Bradford in 1934 that estimates the exponentially diminishing returns of extending a search for references in science journals. One formulation is that if journals in a field are sorted by number of articles into three groups, each with about one-third of all articles, then the number of journals in each group will be proportional to 1:n:n². There are a number of related formulations of the principle.In many disciplines this pattern is called a Pareto distribution. As a practical example, suppose that a researcher has five core scientific journals for his or her subject. Suppose that in a month there are 12 articles of interest in those journals. Suppose further that in order to find another dozen articles of interest, the researcher would have to go to an additional 10 journals. Then that researcher's Bradford multiplier bm is 2 (i.e. 10/5). For each new dozen articles, that researcher will need to look in bm times as many journals. After looking in 5, 10, 20, 40, etc. journals, most researchers quickly realize that there is little point in looking further.Different researchers have different numbers of core journals, and different Bradford multipliers. But the pattern holds quite well across many subjects, and may well be a general pattern for human interactions in social systems. Like Zipf's law, to which it is related, we do not have a good explanation for why it works, but knowing that it does is very useful for librarians. What it means is that for each specialty it is sufficient to identify the "core publications" for that field and only stock those; very rarely will researchers need to go outside that set.However its impact has been far greater than that. Armed with this idea and inspired by Vannevar Bush's famous article As We May Think, Eugene Garfield at the Institute for Scientific Information in the 1960s developed a comprehensive index of how scientific thinking propagates. His Science Citation Index (SCI) had the effect of making it easy to identify exactly which scientists did science that had an impact, and which journals that science appeared in. It also caused the discovery, which some did not expect, that a few journals, such as Nature and Science, were core for all of hard science. The same pattern does not happen with the humanities or the social sciences.The result of this is pressure on scientists to publish in the best journals, and pressure on universities to ensure access to that core set of journals. On the other hand, the set of "core journals" may vary more or less strongly with the individual researchers, and even more strongly along schools-of-thought divides. There is also a danger of over-representing majority views if journals are selected in this fashion.Bradford's law is also known as Bradford's law of scattering and as the Bradford distribution. This law or distribution in bibliometrics can be applied to the World Wide Web.".
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- Bradfords_law wikiPageWikiLink As_We_May_Think.
- Bradfords_law wikiPageWikiLink Benfords_law.
- Bradfords_law wikiPageWikiLink Category:Bibliometrics.
- Bradfords_law wikiPageWikiLink Category:Computational_linguistics.
- Bradfords_law wikiPageWikiLink Category:Statistical_laws.
- Bradfords_law wikiPageWikiLink Citation_index.
- Bradfords_law wikiPageWikiLink Diminishing_returns.
- Bradfords_law wikiPageWikiLink Eugene_Garfield.
- Bradfords_law wikiPageWikiLink Exponential_decay.
- Bradfords_law wikiPageWikiLink Hard_and_soft_science.
- Bradfords_law wikiPageWikiLink Hard_science.
- Bradfords_law wikiPageWikiLink Institute_for_Scientific_Information.
- Bradfords_law wikiPageWikiLink Long_tail.
- Bradfords_law wikiPageWikiLink Lotkas_law.
- Bradfords_law wikiPageWikiLink Nature_(journal).
- Bradfords_law wikiPageWikiLink PageRank.
- Bradfords_law wikiPageWikiLink Pareto_distribution.
- Bradfords_law wikiPageWikiLink Power_law.
- Bradfords_law wikiPageWikiLink Samuel_C._Bradford.
- Bradfords_law wikiPageWikiLink Science_(journal).
- Bradfords_law wikiPageWikiLink Science_journal.
- Bradfords_law wikiPageWikiLink Scientific_journal.
- Bradfords_law wikiPageWikiLink The_Long_Tail.
- Bradfords_law wikiPageWikiLink Vannevar_Bush.
- Bradfords_law wikiPageWikiLink World_Wide_Web.
- Bradfords_law wikiPageWikiLink Zeta_distribution.
- Bradfords_law wikiPageWikiLink Zipfs_law.
- Bradfords_law wikiPageWikiLink Zipf–Mandelbrot_law.
- Bradfords_law wikiPageWikiLinkText "Bradford distribution".
- Bradfords_law wikiPageWikiLinkText "Bradford's law".
- Bradfords_law hasPhotoCollection Bradfords_law.
- Bradfords_law wikiPageUsesTemplate Template:Reflist.
- Bradfords_law subject Category:Bibliometrics.
- Bradfords_law subject Category:Computational_linguistics.
- Bradfords_law subject Category:Statistical_laws.
- Bradfords_law hypernym Pattern.
- Bradfords_law type Disease.
- Bradfords_law comment "Bradford's law is a pattern first described by Samuel C. Bradford in 1934 that estimates the exponentially diminishing returns of extending a search for references in science journals. One formulation is that if journals in a field are sorted by number of articles into three groups, each with about one-third of all articles, then the number of journals in each group will be proportional to 1:n:n².".
- Bradfords_law label "Bradford's law".
- Bradfords_law sameAs Bradfordův_zákon.
- Bradfords_law sameAs Bradfords_lov.
- Bradfords_law sameAs Bradfords_Gesetz.
- Bradfords_law sameAs Ley_de_Bradford.
- Bradfords_law sameAs Loi_de_Bradford.
- Bradfords_law sameAs Bradfordov_zakon.
- Bradfords_law sameAs Wet_van_Bradford.
- Bradfords_law sameAs Prawo_Bradforda.
- Bradfords_law sameAs m.0gt1z.
- Bradfords_law sameAs Bradfordov_zákon_rozptylu.
- Bradfords_law sameAs Закон_Бредфорда.
- Bradfords_law sameAs Q896984.
- Bradfords_law sameAs Q896984.
- Bradfords_law wasDerivedFrom Bradfords_lawoldid=632877383.
- Bradfords_law isPrimaryTopicOf Bradfords_law.