Impact factor

From Wikipedia, the free encyclopedia

The impact factor, often abbreviated IF, is a measure reflecting the average number of citations to articles published in science and social science journals. It is frequently used as a proxy for the relative importance of a journal within its field, with journals with higher impact factors deemed to be more important than those with lower ones. The impact factor was devised by Eugene Garfield, the founder of the Institute for Scientific Information (ISI), now part of Thomson Reuters. Impact factors are calculated yearly for those journals that are indexed in Thomson Reuter's Journal Citation Reports.

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AbbreviatedJournalTitle	ISSN	Total Cites	Impact	5-Year	Immediacy	Articles	Cited	Eigenfactor	Article Influence
Factor	Impact	Index	Half-life	Score	Score

NATURE

0028-0836

443,967

31.434

31.210

8.194

899

8.5

1.7641

17.278

SCIENCE

0036-8075

409,290

28.103

30.268

6.261

862

8.4

1.5834

16.283

PHYS REP	0370-1573	17,347	18.522	16.368	3.959	49	8.7	0.0577	8.056
PHYS REV A	1050-2947	77,793	2.908	2.921	0.775	2,502	8.2	0.2334	1.088
PHYS REV B	1098-0121	250,465	3.322	3.284	0.885	5,782	8.3	0.7648	1.270
PHYS REV C	0556-2813	28,905	3.124	2.969	0.733	904	6.5	0.0851	0.884
PHYS REV D	1550-7998	104,570	5.050	4.299	1.597	2,863	6	0.3204	1.298
PHYS REV E	1539-3755	63,423	2.508	2.566	0.472	2,361	6.1	0.2688	1.039
PHYS REV LETT	0031-9007	310,717	7.180	7.134	1.974	3,905	7.3	1.2813	3.296

APPL PHYS LETT

0003-6951

179925

3.726

4.096

0.688

5449

5.4

0.72389

1.397

J APPL PHYS

0021-8979

113773

2.201

2.479

0.391

4168

8.2

0.349

0.944