ANALYSIS -- From
the ISI Essential Science Indicators Home page, you can access the two Citation
Analysis options: Baselines and Research Fronts.
- Baselines are measures of cumulative citation frequency across
large groups of papers that provide expected citation rates for
groups or tiers of papers. Within Baselines, ISI Essential Science Indicators provides
Average Citation Rates and Percentiles.
each field of study, Average Citation Rates are calculated for each
year of the ten year period covered in ISI Essential Science
Indicators. Averages are calculated by adding up the citation
counts of individual papers and dividing by the number of those
papers. You can compare the citations per paper for a scientist
in a field of study, for example, to the average citation rates
for that field to determine how that scientist's papers compare
to the average.
Percentiles table shows the citation count threshold for four different
percentile cuts for each field and year. The levels we have selected
for listing by field and year are 0.01%, 0.1%, 1.0%, and 10%. Using
the percentiles table, you can determine, for instance, the number
of citations required to be in the top 0.01% for a particular field
Fronts - A Research Front is a group of related highly cited
papers, referred to as "core papers," in a specialized topic defined
by a cluster analysis. Clusters are formed by selecting all papers
that can be linked together by a specified co-citation threshold.
Research Fronts offer an alternative classification scheme for highly
cited papers since the assignment of papers to a Research Front
is not based on the journal categories used in ISI Essential
Science Indicators. You can view all the Research Fronts in
a selected field or search by topic words.