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This chapter delves into the primal-dual method in linear programming, exploring the duality between primal and dual problems. It thoroughly discusses the Primal-Dual Lemma and proofs, emphasizing the Complementary Slackness Conditions that define optimality in linear programs. Additionally, it presents critical concepts such as weight decomposition and covering versus packing types. Theoretical insights are backed by observations and questions regarding the redundancy of certain conditions in approximation explanations, making this a comprehensive resource for advanced understanding of linear programming techniques.
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Chapter 8 PD-Method and Local Ratio Ding-Zhu Du (1) Duality of LP
Dual LP Primal Dual
Lemma Proof.
Chapter 8 PD-Method and Local Ratio Ding-Zhu Du (2) Primal-Dual Method
Complementary Slackness Condition Primal c-s Condition Dual c-s Condition Remark
General Cover M × n
Idea Question:
Lemma Proof
Lemma Proof
Primal and Dual 1. Is redundant? Yes!!!
2.Could we explain the approximation without using LP?Yes!!!
Covering Type M × n
Packing Type m × n