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arXiv 1804.07809cs.ITmath.IT
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支持度和NN解码的权重

Weights which respect support and NN-decoding

Roberto Assis Machado, Marcelo Firer

摘要:

在这项工作中,我们探讨了一个家庭的度量有限域尊重支持向量。我们展示了如何从边加权汉明立方体获得这些度量,并基于此表示,我们给出了一组线性等距(相对于度量)的描述。接下来,我们引入度量的条件和的概念,并确定什么条件决定一个度量尊重支持,出两个这样的给定度量。最后,我们引入了一类新的度量--标号偏序集块度量,它考虑了向量的支持度,填补了已知度量中的一个空白。对于这个家庭,我们给出了一个完整的描述组的线性等距,并确定存在的MacWilliams身份的充分必要条件。

英文摘要:

In this work we explore a family of metrics over finite fields which respect the support of vectors. We show how these metrics can be obtained from the edge-weighted Hamming cube and, based on this representation we give a description of a group of linear isometries (with respect to the metric). Next we introduce the concept of conditional sum of metrics and determine what conditions determine a metric respecting support, out of two such given metrics. Finally we introduce the labeled-poset block metrics, a new family of metrics which respects support of vector, filling a gap existing in the known such metrics. For this family we give a full description of the group of linear isometries and determine necessary and sufficient conditions for the existence of a MacWilliams identity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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