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Optimal information delivery

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Algorithms and Computations (ISAAC 1995)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 1004))

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Abstract

Minimizing transmission and storage costs for delivering large amounts of data at specific locations and times is an important aspect of video-on-demand applications. We formulate a broad class of optimization problems of this sort as Steiner tree problems in a time-space product graph. We show that the general problem is NP-complete, we develop a polynomial-time algorithm for an important special case, and a fast heuristic that achieves an approximation ratio of two. Experimental results suggest that the heuristic is usually within a few percentage points of the optimum.

Research supported by an NSF grant and by the Greek Ministry of Research program ∏ENEΔ-91Δ648.

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References

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  4. C. H. Papadimitriou, S. Ramanathan, P. V. Rangan, and S. Sampathkumar “Multimedia Information Caching for Personalized Video-on-Demand”, Computer Communications, (to appear).

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Author information

Authors and Affiliations

  1. University of California at San Diego, USA

    Christos H. Papadimitriou, Srinivas Ramanathan & P. Venkat Rangan

Authors
  1. Christos H. Papadimitriou
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  2. Srinivas Ramanathan
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  3. P. Venkat Rangan
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Editor information

John Staples Peter Eades Naoki Katoh Alistair Moffat

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© 1995 Springer-Verlag Berlin Heidelberg

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Papadimitriou, C.H., Ramanathan, S., Venkat Rangan, P. (1995). Optimal information delivery. In: Staples, J., Eades, P., Katoh, N., Moffat, A. (eds) Algorithms and Computations. ISAAC 1995. Lecture Notes in Computer Science, vol 1004. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0015422

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  • DOI: https://doi.org/10.1007/BFb0015422

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-60573-7

  • Online ISBN: 978-3-540-47766-2

  • eBook Packages: Springer Book Archive

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