论文标题
本地可解码/可插入和删除的代码
Locally Decodable/Correctable Codes for Insertions and Deletions
论文作者
论文摘要
编码理论的最新努力集中在插入和删除的构建代码上,称为INSDEL代码,其冗余和错误校正功能之间的最佳权衡以及有效的编码和解码算法。 在许多应用中,多项式运行时间可能仍然非常昂贵,这促使研究了使用超高效解码算法的代码。这些导致了局部可解释的代码(LDC)和本地更正的代码(LCC)的良好研究。受这些概念的启发,Ostrovsky和Paskin-Cherniavsky(信息理论安全,2015年)将汉am锤式发达税商概括为插入和删除。据我们所知,这些是唯一研究了在执行插入和删除的通道中锤式发达国家的类似物的唯一已知结果。 在这里,我们继续研究允许本地算法的INSDEL代码。具体而言,我们使用一组不同的技术来谴责Ostrovsky和Paskin-Cherniavsky的结果。我们还观察到这些技术扩展到LCC的构造。具体而言,我们分别从其锤子和LCCS类似物中获得Insdel LDC和LCC。速率和误差校正功能仅由恒定因子吹出,而查询复杂性在块长度中被poly log因子吹来。 由于文献中几乎没有研究INSDEL本地可解码/正确的代码,因此我们认为我们的结果和技术可能会导致进一步的研究。特别是,我们猜想不存在常数INSDEL LDC/LCC。
Recent efforts in coding theory have focused on building codes for insertions and deletions, called insdel codes, with optimal trade-offs between their redundancy and their error-correction capabilities, as well as efficient encoding and decoding algorithms. In many applications, polynomial running time may still be prohibitively expensive, which has motivated the study of codes with super-efficient decoding algorithms. These have led to the well-studied notions of Locally Decodable Codes (LDCs) and Locally Correctable Codes (LCCs). Inspired by these notions, Ostrovsky and Paskin-Cherniavsky (Information Theoretic Security, 2015) generalized Hamming LDCs to insertions and deletions. To the best of our knowledge, these are the only known results that study the analogues of Hamming LDCs in channels performing insertions and deletions. Here we continue the study of insdel codes that admit local algorithms. Specifically, we reprove the results of Ostrovsky and Paskin-Cherniavsky for insdel LDCs using a different set of techniques. We also observe that the techniques extend to constructions of LCCs. Specifically, we obtain insdel LDCs and LCCs from their Hamming LDCs and LCCs analogues, respectively. The rate and error-correction capability blow up only by a constant factor, while the query complexity blows up by a poly log factor in the block length. Since insdel locally decodable/correctble codes are scarcely studied in the literature, we believe our results and techniques may lead to further research. In particular, we conjecture that constant-query insdel LDCs/LCCs do not exist.