説明
Abstract In this paper, we address an online knapsack problem under a convex size–profit function. We first give a greedy online algorithm with a competitive ratio 2. Then we propose an improved online algorithm with a competitive ratio 5/3. We also prove that when the convex function has a specific property, our improved online algorithm is ( 1 + 5 ) / 2 -competitive, which is optimal. Finally, we prove that the lower bound of this problem is ( 1 + 5 ) / 2 .
収録刊行物
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- Theoretical Computer Science
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Theoretical Computer Science 540-541 62-69, 2014-06
Elsevier BV
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詳細情報 詳細情報について
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- CRID
- 1360285707499127808
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- ISSN
- 03043975
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- 資料種別
- journal article
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- データソース種別
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- Crossref
- KAKEN
- OpenAIRE