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sainsworth-ht2015

Summary

Ainsworth, Scott G., Nelson, Michael L. and Van de Sompel, Herbert, "Only One Out of Five Archived Web Pages Existed as Presented," In Proceedings of Hypertext'15. September 2015.

Abstract

When a user retrieves a page from a web archive, the page is marked with the acquisition datetime of the root resource, which effectively asserts “this is how the page looked at a that datetime.” However, embedded resources, such as images, are often archived at different datetimes than the main page. The presentation appears temporally coherent, but is composed from resources acquired over a wide range of datetimes. We examine the completeness and temporal coherence of composite archived resources (composite mementos) under two selection heuristics. The completeness and temporal coherence achieved using a single archive was compared to the results achieved using multiple archives. We found that at most 38.7% of composite mementos are both temporally coherent and that at most only 17.9% (roughly 1 in 5) are temporally coherent and 100% complete. Using multiple archives increases mean completeness by 3.1–4.1% but also reduces temporal coherence.

Bibtex entry

@INPROCEEDINGS { sainsworth-ht2015,
    ABSTRACT = { When a user retrieves a page from a web archive, the page is marked with the acquisition datetime of the root resource, which effectively asserts “this is how the page looked at a that datetime.” However, embedded resources, such as images, are often archived at different datetimes than the main page. The presentation appears temporally coherent, but is composed from resources acquired over a wide range of datetimes. We examine the completeness and temporal coherence of composite archived resources (composite mementos) under two selection heuristics. The completeness and temporal coherence achieved using a single archive was compared to the results achieved using multiple archives. We found that at most 38.7% of composite mementos are both temporally coherent and that at most only 17.9% (roughly 1 in 5) are temporally coherent and 100% complete. Using multiple archives increases mean completeness by 3.1–4.1% but also reduces temporal coherence. },
    AUTHOR = { Ainsworth, Scott G. and Nelson, Michael L. and Van de Sompel, Herbert },
    BOOKTITLE = { Proceedings of Hypertext'15 },
    KEYWORDS = { Digital Libraries,Information Retrieval },
    MONTH = { September },
    PDF = { ainsworth-ht2015.pdf },
    PUBDATE = { 201509 },
    SERIES = { Hypertext'15 },
    TITLE = { Only One Out of Five Archived Web Pages Existed as Presented },
    YEAR = { 2015 },
}

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