Two Batch Search With Lie Cost

Ahlswede R, Cicalese F, Deppe C, Vaccaro U (2009)
IEEE TRANSACTIONS ON INFORMATION THEORY 55(4): 1433-1439.

Journal Article | Published | English

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Abstract
consider the problem of searching for an unknown number in the search space U = {0, ..., M -1}. q-ary questions can be asked and some of the answers may be wrong. An arbitrary integer weighted bipartite graph Gamma is given, stipulating the cost Gamma(i.j) of each answer j not equal i when the correct answer is i, i.e., the cost of a wrong answer. Correct answers are supposed to be cost-less. It is assumed that a maximum cost e for the sum of the cost of all wrong answers can be afforded by the responder during the whole search. We provide tight upper and lower bounds for the largest size M = M(q, e, Gamma, n) for which it is possible to find an unlinown number x* is an element of U with n q-ary questions and maximum lie cost e. Our results improve the bounds of Cicalese et al. (2004) and Ahlswede et al. (2008). The questions in our strategies can be asked in two batches of nonadaptive questions. Finally, we remark that our results can be further generalized to a wider class of error models including also unidirectional errors.
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Ahlswede R, Cicalese F, Deppe C, Vaccaro U. Two Batch Search With Lie Cost. IEEE TRANSACTIONS ON INFORMATION THEORY. 2009;55(4):1433-1439.
Ahlswede, R., Cicalese, F., Deppe, C., & Vaccaro, U. (2009). Two Batch Search With Lie Cost. IEEE TRANSACTIONS ON INFORMATION THEORY, 55(4), 1433-1439.
Ahlswede, R., Cicalese, F., Deppe, C., and Vaccaro, U. (2009). Two Batch Search With Lie Cost. IEEE TRANSACTIONS ON INFORMATION THEORY 55, 1433-1439.
Ahlswede, R., et al., 2009. Two Batch Search With Lie Cost. IEEE TRANSACTIONS ON INFORMATION THEORY, 55(4), p 1433-1439.
R. Ahlswede, et al., “Two Batch Search With Lie Cost”, IEEE TRANSACTIONS ON INFORMATION THEORY, vol. 55, 2009, pp. 1433-1439.
Ahlswede, R., Cicalese, F., Deppe, C., Vaccaro, U.: Two Batch Search With Lie Cost. IEEE TRANSACTIONS ON INFORMATION THEORY. 55, 1433-1439 (2009).
Ahlswede, Rudolf, Cicalese, Ferdinando, Deppe, Christian, and Vaccaro, Ugo. “Two Batch Search With Lie Cost”. IEEE TRANSACTIONS ON INFORMATION THEORY 55.4 (2009): 1433-1439.
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