Bibliometrics: Journal Impact
Use of Journal Metrics
Journal metrics are not appropriate for evaluating an individual article or researcher as they are a journal level indicator.
These metrics can be used as one of several factors when deciding where to publish. Journal metrics can also be used as a collection development tool for libraries when evaluating which journals to purchase or subscribe to.
Potentially, any database with citations could create bibliometric measures. Each vendor that offers bibliometric measures primarily uses its own unique data, journals, authority files, indexes, and subject categories.
There is currently no overarching tool across vendors.