关键词: 采购管理, 局内算法, 竞争分析, 竞争比

Abstract: procurement management is an important part of the business activities, and more effective procurement management strategy can greatly reduce procurement costs, which is very important for the enterprise’s business performance, in the real economic activity inventory cost and commission cost accounts for a large part of the enterprise management costs, the procurement process affects the inventory cost and commission cost. So, on the basis of previous studies, in this paper, online procurement management model is extended by introducing inventory cost and commission cost. No matter what is the procurement price , the online player is promised to get a procurement cost about certain proportion c to the offline optimal procurement cost by committing the procurement policy proposed in the paper, and c is the same with the original model. But after the introduction of inventory cost and commission cost the amount of purchasing will change every day. The original model get purchase quantity and the best competitive ratio every day without considering the inventory cost and commission cost. If considering inventory cost and commission cost that cannot be ignored in real economic activity, we will not get the best competive ratio if still in accordance with the original model to determine the daily procurement. So this paper considering the transaction cost and holding cost, get a different purchase quantity every day to the original model, and find out the best competitive ratio c.

Key words: procurement management, online algorithm, competitive analysis, competitive ratio