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CPFR流程下之訂單預測方法陳寬茂, Chen, Kuan-Mau Unknown Date (has links)
協同規劃、預測與補貨(Collaborative Planning, Forecasting and Replenishment; CPFR)是協同商務中一個新發展的應用實務,主要強調供應鏈上買賣雙方協同合作流程的概念,以提升供應鏈上流程的處理效率。企業需要利用協同合作所獲得之即時資訊來進行預測,減少不確定性因素之影響,提高預測之準確性。CPFR流程下協同預測階段分為銷售預測與訂單預測,兩者之預測項目與目的並不相同且所需要之資訊亦有所差異。銷售預測著重在市場需求部份的預測;訂單預測則是依據銷售預測、存貨狀況與生產面因素來做實際訂單之預測。由於訂單預測作為下個階段之實際補貨的參考,其預測準確性的要求就格外重要。然而研究文獻多偏向CPFR流程架構與導入效益等管理議題,雖有少數針對預測模型之研究,但亦以企業內部銷售預測為主,並未有文獻提出跨企業之協同訂單預測模型,故CPFR流程下訂單預測方法之研究探討有其必要性。本研究以CPFR流程中接續銷售預測之訂單預測階段為研究主題,蒐集近年來國內外研究CPFR與訂單預測之相關文獻為基礎,歸納出協同合作下訂單預測所須具備之屬性與影響因素,並作為模型解釋變數,透過時間序列、多元迴歸與演化策略法(Evolution Strategies)的結合,建構一個統整供應鏈上、下游協同資訊與符合CPFR流程下訂單預測特性之預測模型。最後以國內某製造業公司與其顧客(一國際大型零售商)之訂單資料進行模型驗證,與單純使用時間序列方法或統計迴歸分析的預測結果作績效評比,實驗顯示本研究所提出之訂單預測方法較傳統使用單一時間序列或統計回歸方法之預測結果佳。 / Collaborative Planning, Forecasting and Replenishment (CPFR) is nowadays a practice of collaborative commerce, emphasizing buyers and sellers’ coordination for the efficiency of the process in supply chain. Enterprises utilize instant information obtained from coordinate processes to forecast in order to reduce the influence of the uncertain factor and improve forecasting accuracy. The stage of the collaborative forecasting in CPFR process is divided into sales forecasting and order forecasting which make differences on forecasting objective, subject, and information needed. Sales forecasting focuses on the prediction of the market demand; order forecasting is the prediction of the real orders according to sales forecasting, stock state and productive factor. The accuracy of order forecasting is extremely important because it is regarded as the reference of the replenishment at next stag. The literatures about CPFR mostly probe into manage topics like benefits of implementation or process structures though there are some researches on the forecasting model which mainly discuss sales forecasting inside enterprises. Therefore, it is necessary to investigate into the coordinative order forecasting model under CPFR process. This paper regards order forecasting following sales forecasting in CPFR as the theme. Besides generalizing the necessary parameter of order forecasting based on literatures review, the research presents a hybrid forecasting model which considers coordinative information and order forecasting requirements. It integrates the time series model, regression model, and use evolution strategies to determine its coefficients efficiently. The validity of the forecasting model is verified by experiment on order datum from one manufacturer in Taiwan and its international retailer. The results show that the order forecasting model has better forecasting performance than not only the time series model but also the ordinary regression model.
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CPFR流程下的補貨模型陳志強 Unknown Date (has links)
協同規劃、預測與補貨﹙Collaborative Planning, Forecasting and Replenishment; CPFR﹚是協同商務中的一個應用實務,主要強調供應鏈上買賣雙方協同合作流程的概念,以提升供應鏈上流程的處理效率。未來企業的競爭將是產品背後整體供應鏈的激烈競爭,能對於不斷變化的市場需求作出有效預測,進而快速反應的企業將脫穎而出。對於庫存與補貨的掌控能力更將是企業決勝的關鍵因素之一。
CPFR 中的補貨模型是根據銷售預測、訂單預測、存貨策略與供給面資訊來做實際訂單,以作為補貨之用。補貨模式的準確性可以使賣方針對不同的需求來有效分配未來訂單預測的需求量,並降低安全庫存;買方則可根據訂單預測來調整庫存策略與採購數量。
現今廣用的供應商管理存貨(Vendor Managed Inventory, VMI)並沒有像CPFR加入更多的協同項目與精神,因此比較VMI與CPFR的補貨流程的差異性與優劣性,進而提供企業導入CPFR的補貨流程是相當重要的。
本研究以補貨階段為主題,除了探討協同補貨模式所需具備的屬性與輸入變數外,更將建構一個整合供應鏈上、下游協同資訊與符合協同訂單預測特性之預測模型,以提升補貨準確度,進而堆砌出整個CPFR 協同補貨模式,並加以與現今企業廣為採用的供應商管理存貨(Vendor Managed Inventory, VMI)的補貨模式進行比較,證明CPFR優於VMI,進而可供欲導入CPFR 流程下協同補貨模式或一般補貨模式的相關人員之參考。 / CPFR (Collaborative Planning, Forecasting, and Replenishment) is one of the applications of collaborative business. The stressed concept is the cooperation process of sellers and buyers on the supply chain in order to increase the handling efficiency. In the future, the industries would compete on the whole supply chains behind products—only the industry that is capable of making accurate predictions according to the constantly changing market and reacts immediately has the chance of winning. Being able to control the inventory and supply effectively would be one of the key factors leading to an industry’s success.
The replenishment model of CPFR is to fill out the order according to the sales prediction, order prediction, inventory strategy, and supply information. The precision of the replenishment model could affect both suppliers and customers. The former can distribute products properly and meet the different demands from the upcoming orders so as to reduce inventory; the latter are able to revise the inventory strategy and amount of order according to the order prediction.
A few research papers aimed at the replenishment model, though, most still focus on the management issues like the process framework of CPFR and the implementation benefit. Hence, establishing both an information system that coordinates customer demand with suppliers and a collaborative replenishment model that increases the accuracy of predictions is fairly important.
The phase of replenishment, as the subject of this study, will approach on parameters the collaborative replenishment model needs to input and combine evolution strategies with tabu search to establish a replenishment model under the process of CPFR.
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