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Reconstruction of sceneries with correlated colors

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  • Löwe, Matthias
  • Matzinger III, Heinrich

Abstract

Matzinger (Random Structure Algorithm 15 (1999a) 196) showed how to reconstruct almost every three color scenery, that is a coloring of the integers with three colors, by observing it along the path of a simple random walk, if this scenery is the outcome of an i.i.d. process. This reconstruction needed among others the transience of the representation of the scenery as a random walk on the three-regular tree T3. Den Hollander (private communication) asked which conditions are necessary to ensure this transience of the representation of the scenery as a random walk on T3 and whether this already suffices to make the reconstruction techniques in Matzinger (1999a) work. In this note we answer the latter question in the affirmative. Also we exhibit a large class of examples where the above-mentioned transience holds true. Some counterexamples show that in some sense the given class of examples is the largest natural class with the property that the representation of the scenery as a random walk is transient.

Suggested Citation

  • Löwe, Matthias & Matzinger III, Heinrich, 2003. "Reconstruction of sceneries with correlated colors," Stochastic Processes and their Applications, Elsevier, vol. 105(2), pages 175-210, June.
    • Handle: RePEc:eee:spapps:v:105:y:2003:i:2:p:175-210
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    References listed on IDEAS

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    1. Keane, M. & den Hollander, W.Th.F., 1986. "Ergodic properties of color records," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 138(1), pages 183-193.
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    Cited by:

    1. Matzinger, Heinrich & Rolles, Silke W. W., 2003. "Reconstructing a piece of scenery with polynomially many observations," Stochastic Processes and their Applications, Elsevier, vol. 107(2), pages 289-300, October.
    2. Hart, Andrew & Matzinger, Heinrich, 2006. "Markers for error-corrupted observations," Stochastic Processes and their Applications, Elsevier, vol. 116(5), pages 807-829, May.

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