Aggregation and Archiving #TPDL2013

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Voor deze track heb ik niet gekozen, deels omdat hij me te technisch was, deels omdat het toch erg gericht is op UBen.  Maar bij deze de samenvattingen

Deze track bevat:

  1. On the Change in Archivability of Websites Over Time. Mat Kelly, Justin F. Brunelle, Michele C. Weigle, and Michael L. Nelson
  2. Checking Out: Download and Digital Library Exchange for Complex Objects. Scott Britell, Lois M.L. Delcambre, Lillian N. Cassel, and Richard Furuta
  3. Profiling Web Archive Coverage for Top-Level Domain and Content Language. Ahmed Alsum, Michele C.

1. On the Change in Archivability of Websites Over Time. Mat Kelly, Justin F. Brunelle, Michele C. Weigle, and Michael L. Nelson

As web technologies evolve, web archivists work to keep up so that our digital history is preserved. Recent advances in web technologies have introduced client-side executed scripts that load data without a referential identifier or that require user interaction (e.g., content loading when the page has scrolled). These advances have made automating methods for capturing web pages more difficult. Because of the evolving schemes of publishing web pages along with the progressive capability of web preservation tools, the archivability of pages on the web has varied over time. In this paper we show that the archivability of a web page can be deduced from the type of page being archived, which aligns with that page’s accessibility in respect to dynamic content. We show concrete examples of when these technologies were introduced by referencing mementos of pages that have persisted through a long evolution of available technologies. Identifying these reasons for the inability of these web pages to be archived in the past in respect to accessibility serves as a guide for ensuring that content that has longevity is published using good practice methods that make it available for preservation

Ziet er heel complex uit. Memento (adding time to the web).

2. Checking Out: Download and Digital Library Exchange for Complex Objects. Scott Britell, Lois M.L. Delcambre, Lillian N. Cassel, and Richard Furuta

Digital resources are becoming increasingly complex and are being used in diverse ways. For example, educational resources may be cataloged in digital libraries, used offline by educators and students, or used in a learning management system (LMS). In this paper we present the notion of “checking out” complex resources from a digital library for offline download or exchange with another digital library or learning management system. We present a mechanism that enables the customization, download and exchange of complex resources. We show how the mechanism also supports digital library and learning management system exchange formats in a generic fashion with minimal overhead. We also
show how checkouts grow linearly with respect to the complexity of the resources.

Situatie voor een universiteitsbibliotheek

3. Profiling Web Archive Coverage for Top-Level Domain and Content Language. Ahmed Alsum, Michele C.

The Memento aggregator currently polls every known public web archive when serving a request for an archived web page, even though some web archives focus on only specific domains and ignore the others. Similar to query routing in distributed search, we investigate the impact on aggregated Memento TimeMaps (lists of when and where a web page was archived) by only sending queries to archives likely to hold the archived page. We profile twelve public web archives using data from a variety of sources (the web, archives’ access logs, and full-text queries to archives) and discover that only sending queries to the top three web archives (i.e., a 75% reduction in the number of queries) for any request
produces the full TimeMaps on 84% of the cases

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