کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
429967 687756 2016 18 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Data reductions and combinatorial bounds for improved approximation algorithms
ترجمه فارسی عنوان
کاهش داده ها و محدوده ترکیبی برای بهبود الگوریتم تقریبی
کلمات کلیدی
قوانین کاهش، مسائل به حداکثر رساندن، تقریب زمان چندجملهای، مشکلات سلطه
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نظریه محاسباتی و ریاضیات
چکیده انگلیسی


• We introduce data reduction rules for obtaining approximation algorithms for maximization problems.
• These rules are combined with certain combinatorial insights often typical for kernelization algorithms.
• The resulting algorithms are of a combinatorial nature, yet better than previous published work in at least two special cases.
• We discuss several concrete problems that are natural maximization versions of well-studied domination-type graph problems.

Kernelization algorithms in the context of Parameterized Complexity are often based on a combination of data reduction rules and combinatorial insights. We will expose in this paper a similar strategy for obtaining polynomial-time approximation algorithms. Our method features the use of approximation-preserving reductions, akin to the notion of parameterized reductions. We exemplify this method to obtain the currently best approximation algorithms for Harmless Set, Differential and Multiple Nonblocker, all of them can be considered in the context of securing networks or information propagation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computer and System Sciences - Volume 82, Issue 3, May 2016, Pages 503–520
نویسندگان
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