The Association for Computing Machinery (ACM) has announced that it is providing its institutional library customers with advanced electronic archiving services to preserve their electronic resources. These services, provided by Portico and CLOCKSS, are aimed to help the scholarly community obtain reliable, secure, deliverable access to their digital collection of scholarly works. ACM is offering these services to protect the online collection of resources in its Digital Library (DL), which are used by over 1 million computing professionals and students worldwide.
This initiative is part of ACM’s efforts to enhance the content, features, performance and worldwide reach of its DL. By investing in long-term digital preservation of content, ACM aims to make it easier for libraries to accelerate their transition away from print. Libraries are also expected to free up resources invested in print collections in favour of new and innovative electronic products and services.
Portico’s primary preservation methodology is migration, which involves transitioning content from one file format to another as technology changes and as file formats become obsolete. Its archival approach begins with receipt of source files, which comprise the intellectual content of electronic scholarly journals, directly from publishers. It then offers transformation or ‘normalisation’ of these diverse files to a standard archival format which can be reliably managed over the long term.
CLOCKSS uses archive nodes, which are housed at libraries selected to be the custodians of the archived content, and at institutions that have existed for a very long time. Archive nodes are located in geographically, politically and geologically disparate locations in North America, Europe and Asia. The CLOCKSS archive is governed by the participating publishers and libraries, and supports the library's role in society as a ‘custodian of culture.’
The ACM Digital Library comprises an online collection of more than 2 million pages of full-text articles from ACM publications as well as one of the most comprehensive bibliographic databases in the computing field. The ACM DL includes an index of more than 7 million references, 1.25 million citations and over 500,000 journal articles. ACM’s full-text database consists of many of the highest impact titles in the computing field dating back to 1954. It also includes content from ACM’s journals, magazines, conference proceedings, ACM Special Interest Group (SIG) newsletters, technical reports and multimedia files.
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