ACM's first classification system for the computing field was published in 1964. Then, in 1982, the ACM published an entirely new system. New versions based on the 1982 system followed, in 1983, 1987, 1991, and 1998. The 2012 scheme utilizes a new poly-hierarchical structure and a more in-depth approach than the 1998 version. It no longer uses the letter-and-number coding of the previous versions. The old scheme has been mapped to the new, and both the 1998 and 2012 terms are available on Citation Pages of all indexed articles in the ACM Digital Library.
Authors using the 1998 classification system follow these instructions on how to classify your work: How to Classify Works Using ACM's 1998 Computing Classification System
For authors using the 2012 classification system, an important aspect of preparing your paper for publication by ACM Press
is to provide the proper indexing and retrieval information from the
ACM 2012 Computing Classification System (CCS)
This is beneficial to you because accurate categorization
provides the reader with quick content reference, facilitating the
search for related literature, as well as searches for your work in
ACM's Digital Library
and on other online resources.
Please read the HOW TO CLASSIFY WORKS USING ACM'S 2012 COMPUTING CLASSIFICATION SYSTEM
for instructions on how
to classify your document using the 2012 ACM Computing Classification
System and insert the index terms into your LaTeX or Microsoft Word
Revised March 3, 2015