Abstract
The creation time of documents is an important kind of information in temporal information retrieval, especially for document clustering, timeline construction and search engine improvements. Considering the manner in which content on the Web is created, updated & deleted, the common assumption that each document has only one creation time is not suitable for Web documents. In this paper, we investigate to what extent this assumption is wrong. We introduce two methods to timestamp individual parts (sub-documents) of Web documents and analyze in detail the creation & update dynamics of three classes of Web documents.
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- 1.
- 2.
This time range was chosen due to our experimental data, cf. Sect. 4.
- 3.
- 4.
- 5.
CRF++: https://taku910.github.io/crfpp/.
- 6.
- 7.
Specifically, we sampled from Disk1 of the ClueWeb12 corpus.
- 8.
We mean here all versions available on IA, not just those with changed content.
- 9.
- 10.
\(max\_features\) is 3 and 6, C-value is \({9 \times 10^{-6}}\).
- 11.
McNemar’s test was employed for statistical significance testing, with \(p< 0.01\).
- 12.
\(max\_features\) is 5 and 13, C-value is \({9 \times 10^{-5}}\).
- 13.
\(max\_features\) is 7 and 11, C-value is \(1 \times 10^{-6}\).
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Zhao, Y., Hauff, C. (2016). Sub-document Timestamping: A Study on the Content Creation Dynamics of Web Documents. In: Fuhr, N., Kovács, L., Risse, T., Nejdl, W. (eds) Research and Advanced Technology for Digital Libraries. TPDL 2016. Lecture Notes in Computer Science(), vol 9819. Springer, Cham. https://doi.org/10.1007/978-3-319-43997-6_16
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