### 2010 World University Rankings

RPI Results

The top 500 universities worldwide as ranked by the research performance index (RPI) are given in the table below.

The top performer for 2010 is Harvard University.

The dream team comprises 3 faculties from Harvard and 2 faculties from UC Berkeley (one of which ties with Caltech).

For Australian listings, follow this link. For Q&A's, see here. Refer to the research article for full details.

#### Points to Note

In a nutshell

How is the research performance index (RPI) calculated?

A simple 3 step process for each university (see further below for interpretation, example, and results):

Step 1. calculate the g-index for each faculty of the particular university
Step 2. divide or normalize the g-index for each faculty by that of the highest globally performing faculty
Step 3. average or sum the normalized faculty indices to arrive at a final RPI value for a particular university

What is the g-index? A numerical measure of the quality and consistency of publication or research output.
Why normalize? So that scores across the five faculties or disciplines can be compared on the same scale.
Why take an inter faculty average? To indicate comprehensiveness or all round relative performance.

What are the faculties?

There are 5 standard faculties for all universities:

MDPHS= Medicine, Dentistry, Pharmacology, and Health Sciences
PNMS= Pure, Natural, and Mathematical Sciences
ECT= Engineering, Computing, and Technology
LBAS= Life, Biological and Agricultural Sciences

AHBSS= Arts, Humanities, Business, and Social Sciences

The g-index is calculated on a faculty wide level with the following policies:

Publications policy:

• periods are between 2000 to 2009 inclusive
• types are restricted to journal and conference articles, and authored and edited books
• citations can be from any source

Credit policy:

• credit is given to the institution where the work was performed (not the current affiliation of the authors)
• credit is given to all institutions involved
• credit is given to one or more faculties wherever appropriate

Extra notes:

The h-index and g-index are somewhat related. For an individual or institution, the definitions are as follows:
The h-index is the highest count h of publications such that each publication has at least h citations.

The g-index is the highest count g of publications, such that taken together, have an average of at least g citations per publication.

See the following references for full details:
[g] L. Egghe, “Theory and Practise of the g-index,” Scientometrics, Vol. 69, No. 1, pp. 131-152, Jan. 2006.
[h] J. Hirsch, “An Index to Quantify an Individual’s Scientific Research Output,” PNAS, Vol. 102, No. 46, pp. 16569-16572, Nov. 2005.

#### Top 500

Overall Worldwide

Interpretation of the research performance index (RPI):

The RPI is a percentage or number between 0 and 1 comprised of equal contributions from all faculties.
It is interpreted as an indication of the comprehensiveness or all round relative performance of a university.

The actual RPI value itself is an indication of performance relative to the dream team.
A score of 1 corresponds to the global dream team comprising the best faculties of all the universities in the world.

For the faculty abbrevations, see the notes directly above.
For the Q&A list, and an explanation regarding the French universities, see here.

Example Calculation for Harvard University:

Step 1. The faculty g-indices for Harvard University are:
(MDPHS) 489, (PNMS) 281, (ECT) 154, (LBAS) 433, (AHBSS) 158

Step 2a. The faculty g-indices for the dreamteam are (the g-indices of the best faculties in the world):
(MDPHS) 489, (PNMS) 284, (ECT) 241, (LBAS) 433, (AHBSS) 158

Step 2b. The faculty g-indices for Harvard are normalized by dividing by those of the dreamteam:
(MDPHS) 489/489, (PNMS) 281/284, (ECT) 154/241, (LBAS) 433/433, (AHBSS) 158/158

Step 3a. The total score is the sum of the normalized scores:
TOT= 1.0000+0.9894+0.6390+1.0000+1.0000= 4.6284 (out of 5)

Step 3b. The final RPI is the average of the normalized scores:
RPI= 4.6284/5= 0.9257. (out of 1)

The Results Table: