Tarantino

Scopus, Google Scholar,Web of knowledge:Too much or not too much?ICOLC Autumn 2005 7th European Meeting - Poznan, Poland: 

Scopus, Google Scholar, Web of knowledge: Too much or not too much? ICOLC Autumn 2005 7th European Meeting - Poznan, Poland Ezio Tarantino Con la collaborazione con Mary Joan Crowley BIDS – Biblioteca digitale della Sapienza University of Rome “La Sapienza”

University of Rome “La Sapienza”: 

University of Rome “La Sapienza” 1999: BIDS (digital library) is born (10 databases) 2001: Web of Science

University of Rome “La Sapienza”: 

University of Rome “La Sapienza” Usage statistics (2002)

University of Rome “La Sapienza”: 

University of Rome “La Sapienza” Usage statistics (2002)

University of Rome “La Sapienza”: 

University of Rome “La Sapienza” Usage statistics (2002)

University of Rome “La Sapienza”: 

University of Rome “La Sapienza” Usage statistics (2002)

University of Rome “La Sapienza”: 

University of Rome “La Sapienza” 2003 WOS

University of Rome “La Sapienza”: 

University of Rome “La Sapienza” How many times has that article been cited? How many times has my article been cited?

University of Rome “La Sapienza”: 

University of Rome “La Sapienza” 2004, July Scopus trial. Pre-release version

University of Rome “La Sapienza”: 

University of Rome “La Sapienza” 2004, October Coverage & overlap * source: CSA

University of Rome “La Sapienza”: 

University of Rome “La Sapienza” 2004, November Start-up of Google Scholar 2005, January Signed contract with SCOPUS

A quantitative evaluation: 

A quantitative evaluation How many articles? How many citations?

A quantitative evaluation: 

A quantitative evaluation Number of articles WOS: 35.000.000 articles Scopus: 25.000.000 Google Scholar ?

A quantitative evaluation: 

A quantitative evaluation Time range WOS: 1990-2003 Scopus: 1996- Google Scholar ?

A quantitative evaluation: 

A quantitative evaluation The test 10 articles per discipline (economics, medicine, science, psychology) from international journal, since 1968 until 2003.

A quantitative evaluation: 

A quantitative evaluation The test Number of positive answers

A quantitative evaluation: 

A quantitative evaluation

A quantitative evaluation: 

A quantitative evaluation The test Number of citations

A quantitative evaluation: 

A quantitative evaluation

A quantitative evaluation: 

A quantitative evaluation The test Number of citations by discipline

A quantitative evaluation: 

A quantitative evaluation

A quantitative evaluation: 

A quantitative evaluation The test Average citations per article found

A quantitative evaluation: 

A quantitative evaluation

A quantitative evaluation: 

A quantitative evaluation The test Articles by time range

A quantitative evaluation: 

A quantitative evaluation The test Articles found by year

A qualitative evaluation: 

A qualitative evaluation Test #1 Discipline: Psychology Article: Hoffmann, L.W., The Influence of the Family Environment on Personality: Accounting for Sibling Differences, di Hoffman (Psychological Bulletin, 1991) citations: Scopus: 51 (3 not found elsewhere) WOS: 81 (35 not found elsewhere) GS: 33 (4 not found elsewhere)

A qualitative evaluation: 

A qualitative evaluation citations: Scopus: 51 (3 unique) WOS: 81 (35 unique) GS: 33 (4 unique) citations in common WOS-Scopus: 43/51 WOS-GS: 25/33 Scopus-GS: 26/33

A qualitative evaluation: 

A qualitative evaluation citations: Scopus: 51 (3 unique) WOS: 81 (35 unique) GS: 33 (4 unique) citations in common WOS+Scopus: (81+51)-43 = 89 WOS+GS: (81+33)-25 = 89 Scopus+GS: (51+33)-26 = 58

A qualitative evaluation: 

A qualitative evaluation Advantage or disadvantage? QUESTIONS Is it “noise” or more information? Who decides?

A qualitative evaluation: 

A qualitative evaluation

A qualitative evaluation: 

A qualitative evaluation Test #2 Discipline: Economics and finance Article: Frittelli. M.: The minimal Entropy Martingale Measure and the Valuation Problem in Incomplete Markets, (Mathematical finance, 2000) citations: Scopus: 36 WOS: 32 GS: 116

Slide33: 

Epstein, L., and S. Zin, 1989, "Substitution, Risk Aversion, and the Temporal Behavior of Consumption and Asset Returns: A Theoretical Framework," Econometrica, 57, 937–969.[ISI] Epstein, L., and S. Zin, 1991, "Substitution, Risk Aversion, and the Temporal Behavior of Consumption and Asset Returns: An Empirical Investigation," Journal of Political Economy, 99, 263–286.[CrossRef][ISI]  article [Frittelli, The minimal Entropy Martingale Measure and the Valuation Problem in Incomplete Markets,] should be here Gilboa, I., and D. Schmeidler, 1989, "Maxmin Expected Utility with Non-unique Prior," Journal of Mathematical Economics, 18, 141–153.[CrossRef][ISI] Hansen, L., and T. Sargent, 1995, "Discounted Linear Exponential Quadratic Gaussian Control," IEEE Transactions on Automatic Control, 40, 968–971.[CrossRef][ISI]

Slide35: 

[F 00] M. Fritelli, (2000), The minimal entropy martingale measure and the valuation problem in incomplete markets. Mathematical Finance, Vol. 10, pp. 39{52 Fritelli,

A qualitative evaluation: 

A qualitative evaluation Test #3 Article: Buncel, E..: Rationalizing the regioselectivity in polynitroarene anionic σ-adduct formation. Relevance to nucleophilic aromatic substitution (Chemical Reviews 1995 (7), pp. X-2280 ) citations: Scopus: 3 WOS: 65 GS: 15

A qualitative evaluation: 

A qualitative evaluation

A qualitative evaluation: 

A qualitative evaluation

A qualitative evaluation: 

A qualitative evaluation

A qualitative evaluation: 

A qualitative evaluation Test #4 (The ghost article: an international plot) Article:Ryckaert-Ciccotti: Numerical integration of the cartesian equations of motion of a system with constraints: molecular dynamics of n-alkanes. Journal of computation physics, 1977) citations: Scopus: not found WOS: not found GS: cited by 1.276

A qualitative evaluation: 

A qualitative evaluation

A qualitative evaluation: 

A qualitative evaluation

A qualitative evaluation: 

A qualitative evaluation

Conclusion: 

Conclusion The winner is…. No winner!

Slide45: 

Thank you ezio.tarantino@uniroma1.it