the eigenfactor project: exploring the network structure of … · 2018-01-04 · the eigenfactor...
TRANSCRIPT
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
The Eigenfactor Project Exploring the network
structure of science
Carl T. BergstromUniv. Washington
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Ranking
Mapping
Discovering
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Which journals should we buy?
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Impact factor
Cites in 2008 to articles in 2007 or 2006
Articles published in 2007 and 2006
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Impact factor drives…
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Library subscriptions
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Promotion and tenure
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Publishers negotiate.
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Administrators nag.
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Impact factorwas supposed to serve
science
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
But scientistsend up serving impact factor
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
How can we better evaluatethe scholarly literature?
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Who has time for that?
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
A legitimate need for quantitative measures
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
“What is the value of a full volume of Science?”
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
“How often do biologists cite economics papers?”
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
“Which publishers providethe best value per dollar?”
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
“Which publishers providethe best value per dollar?”
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Scholarship is all aboutthe flow of ideas
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Networks are all aboutthe flow of information
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Eigenvector centrality
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Important people have important friends
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Important websites are linked to by
important websites
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Important journals are cited by
important journals
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Citations from good journals
are worth more
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Citations from non-review journals
are worth more
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Citations from “frugal” fields
are worth more
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
A model of citation-driven research
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Where does our researcherspend his time in the long-run?
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Eigenfactor Score is a measure of total value
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Journal Eigenfactor™ Score
Nature 2.0%
Science 1.9%
J. Biol. Chem. 1.8%
Proc. Nat. Acad. Sci. 1.8%
Phys. Rev. Let. 1.4%
J. Am Chem. Soc 1.0%
Phys. Rev. B 0.9%
Appl. Phys. Let 0.7%
New Engl. J. Med. 0.7%
Astrophys. Let. 0.7%
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Article Influence is a measure of prestige
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Article Influence
Eigenfactor# Articles
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Journal Article Influence™ ScoreScience 18.3
Nature 17.6
Cell 17.0
New Engl. J. Med. 16.8
Nature Immunology 14.8
Quart. J. Economics 14.7
Cancer CA 13.9
Nature Medicine 13.6
Nature Genetics 13.3
Nature Materials 11.6
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Ranking
Mapping
Discovering
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Networks tell stories
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
High schooldating network
Courtesy of Mark Newman
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
How does this approach scale up?
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Social Science JournalsLoet Leydesdorff (2004)
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Yeast protein interaction network
Bader and Hogue (2002) Nature
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
good maps simplifyand highlight
relevant structures
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
maps are useful compressions
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
maps are useful compressions
Literally.
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Compress a pathresulting from
dynamics on a network
Find the important structural features
of the network
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
The map equationRosvall and Bergstrom 2008 PNAS
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
The map equationRosvall and Bergstrom 2008 PNAS
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
The flow of ideas through the sciences
Rosvall and Bergstrom
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
The flow of ideas through the social sciences
Rosvall and Bergstrom
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Maps help us see patterns.
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
“coverage” Impact factor
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Maps give us a 30,000 foot view.
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Quic k Tim e™ and aTIFF (Unc om pres s ed) dec om pres s or
are needed to s ee th is p ic ture.
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Maps help us organize data.
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Maps help us navigate the search process.
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Ranking
Mapping
Discovering
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
“Which are the classic papers in a field?”
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
“Which are the hidden gems?”
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
“Which recent papers are mostly likely to have a large impact?”
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
“Which papers complement a given bibliography?”
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
“Where are new connections arising in the sciences?”
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
“Which journals are most important in trafficking ideas across disciplines?”
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
“How is the structure of science changing?”
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
What is real changeand what is mere noise?
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
1. Determine which structures are statistically significant.
2. Visualize changes in those structures.
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
1. Determine which structures are statistically significant.
2. Visualize change in those structures.