Essential Science Indicators
provides internet access to a unique and comprehensive compilation
of essential science performance statistics and science trends data
derived from ISI's data sets.
chief indicators of output, or productivity, are journal article
publication counts. For influence and impact measures, ISI Essential Science Indicators
employs both total citation counts and cites per paper scores. The
former reveals gross influence while the latter shows weighted influence,
also called impact.
ISI Essential Science Indicators is divided into four main sections:
Rankings: Using total citation counts and cites per paper scores,
the ISI Essential Science Indicators determines the rankings of:
the most-cited authors
most-cited institutions (universities, corporations, government
Cited Papers: In addition to providing rankings for authors,
institutions, countries, and journals, ISI Essential Science
Indicators contains the most highly cited papers and hot papers.
Papers are selected for ISI Essential Science Indicators
based on percentile rankings specific to fields of science and specific
time periods. While highly cited papers are chosen from the most
recent 10 years of data, hot papers focus on very recent papers
(from the past two years) that show an unusual rate of citation
in the current period.
Analysis: ISI Essential Science Indicators contains Baselines
information used to formulate the thresholds used in the selection
process. Another unique feature is the listing of research areas
called Research Fronts, algorithmically derived topics reflecting
research intensive and breakthrough areas of current science.
Brief editorial discussions that provide guidance on data analysis
and interpretation enhance the tables, charts, and other data sets
presented in ISI Essential Science Indicators. An editorial
feature called Special Topics focuses on selected areas of research.