Cancer Informatics

This service is in beta and may be incomplete or contain minor discrepancies.  We welcome feedback from users.  To tell us what you think visit the survey form.

Article metrics are calculated from a variety of sources.  These sources and their known limitations are summarised here.

Total article views and downloads by month are derived from internal data and usually also Pubmed Central data.  Internal data is recorded in accordance with Project COUNTER Release 3, which is used by many publishers to ensure that visibility data is credible and reliable for readers.  It excludes automated search engine and archiving visits or downloads and rapid sequences of views or downloads to prevent accidental or intentional manipulation of data.  

Prior to September 2008 COUNTER data was not collected and prior to January 2011 views and downloads were not recorded separately.  Views by region are also derived from COUNTER data and because data on geographical region is not always available discrepancies may exist between quantities shown on the map and the table.

Pubmed Central data is only shown where the article is present on PMC and its PMC identifying number is recorded in our database.  Owing to PMC limitations data is updated once monthly and is not available prior to September 2010.  

Where available Altmetric data is supplied through the Altmetric API.  Altmetric commenced collection of data for Libertas journals in approximately July 2012.  We expect to add further sources as Altmetric introduces support for them and we may also add the ability to view individual tweets, Facebook posts etc.

The Altmetric score is a quantitative measure of the quantity and quality of attention that an article has received. It is calculated based on the number of people sharing and the validity and reliability of the source and its author. The ranking in journal score is a measure of an article’s Altmetric score compared to other articles in the journal.