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All figures (15)
Fig. 7. Calculating the utility of data updates
TABLE III NOTATION SUMMARY
Fig. 1. Data Access Tree (DAT). Each node in the DAT accesses data when it contacts its parent node in the DAT.
Fig. 8. Opportunistic replication of data updates
Fig. 9. Side-effect of opportunistic refreshing
Fig. 14. Temporal variations of the performance of maintaining cache freshness
Fig. 2. Distributed and hierarchical maintenance of cache freshness
TABLE IV TRACE SUMMARY
Fig. 10. Opportunistic path
Fig. 11. Performance of maintaining cache freshness with varied lifetime of cached data
Fig. 12. Performance of maintaining cache freshness with different values of parameter Δ and 𝑝 = 60%
Fig. 13. Performance of maintaining cache freshness with different values of parameter 𝑝 and Δ = 1.5 hours
TABLE II NUMERICAL RESULTS FOR DISTRIBUTIONS OF INTER-REFRESHING TIME OF INDIVIDUAL RSS FEEDS
Fig. 5. Temporal distribution of news updates during different hours in a day
Fig. 6. Standard deviation of the numbers of news updates during different hours in a day
Proceedings Article
•
DOI
•
Distributed Maintenance of Cache Freshness in Opportunistic Mobile Networks
[...]
Wei Gao
1
,
Guohong Cao
1
,
Mudhakar Srivatsa
2
,
Arun Iyengar
2
•
Institutions (2)
Pennsylvania State University
1
,
IBM
2
18 Jun 2012
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