I know it's rather difficult to establish a ranking of publications, especially because the ones in charge of establishing values for venues might be biased by their field, and several other aspects. However, I know some well-accepted (at least locally) ranking, that consider all fields under research, e.g. Brazilian Qualis - in portuguese - that includes both confs and journals, and Australian ERA - this latter has served as baseline for some class A conferences in Computer Science (my research field), in some countries other than Australia.
Hence, I wonder about the existence of another "global ranking", that has been applied overseas, thus including at least the most prominent events and journals in every field. For journals, it's a little bit easier to measure its importance, by looking at their Impact Factor values, but for conferences it's a little bit tough. To the best of my knowledge, I don't know a largely-applied means of measuring the impact of a conf.
I'd like to hear from you. Thanks in advance.
The following national rankings were used as a baseline in the construction of the Finnish ranking. Hence they are "global" in the sense that they have been at least somewhat useful abroad:
- Norwegian ranking (general): http://dbh.nsd.uib.no/kanaler/?search=advanced
- Danish ranking (general): http://fivu.dk/forskning-og-innovation/statistik-og-analyser/den-bibliometriske-forskningsindikator
- Australian ranking (general): http://www.arc.gov.au/era/era_2012/era_journal_list.htm
- European ranking (humanities): http://www.esf.org/research-areas/humanities/erih-european-reference-index-for-the-humanities.html