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外文翻譯---供應(yīng)鏈管理環(huán)境下的庫存優(yōu)化-環(huán)境工程-免費閱讀

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【正文】 making the demand velocity v,the substitution of ξ, as output layer。output layer39。activation function39。 ξ: The demand during this epoch, it is a random variable。 根據(jù)上述分析,很難適當(dāng)描述傳統(tǒng)做法下影響庫存需求的因素之間的關(guān)系。 制作 BP神經(jīng)網(wǎng)絡(luò)庫存預(yù)測的關(guān)鍵部件是因素和量化的選擇。是出現(xiàn)在每個周期或 39。組成。這一模式的優(yōu)勢尋找一個合適的預(yù)測模型庫存清單。 直接和深遠(yuǎn)影響到企業(yè)的供應(yīng)鏈變化的思考的決策模式 : 改變傳統(tǒng)模式,阻止 縱 向思考模式 進(jìn)入橫向 ,縱向的思考模式打開。 現(xiàn)在,我們給一個簡單的單周期隨機(jī)庫存模型: 在這個模型中: E[T(y)]: 價值期望的總費用清單; c:每種產(chǎn)品制造(或購買)的費用; h: 每個產(chǎn)品的庫存成本; p: 缺少每個產(chǎn)品的懲罰成本; x:開放的股票; y: 該股在開放時所得;ξ : 在這個時期,它為隨機(jī)變量; φ(ξ) :概率密度函數(shù)。 另一方面,影響存貨清單的各因素之間的關(guān)系是非線性的,因此很難作出一個定量和明確的數(shù)學(xué)關(guān)系,而且這些最佳的成果也不能滿足實際應(yīng)用。供應(yīng)鏈管理的想法是采用整體的方法來管理整個信息流,材料和來自于原材料供應(yīng)商的服務(wù)通過工廠和倉庫直到最終的客戶。并依據(jù)某一鋼材現(xiàn)貨公司的庫存情況給出具體的應(yīng)用。所有這些模式在供應(yīng)鏈管理的思想應(yīng)運而生之前已經(jīng)取得了,但這些模型沒有考慮上游 和下游企業(yè)。本文將提出在多層次的BP神經(jīng)網(wǎng)絡(luò)的幫助下 , 來改進(jìn)傳統(tǒng)的 庫存模型以獲得更令人滿意的優(yōu)化庫存。從上述分析我們知道影響隨機(jī)變量的因素是多變量非線性關(guān)系;如:產(chǎn)品的價格,銷售季節(jié)的變化 , 內(nèi)部收益率的總和。換言之,人工神經(jīng)網(wǎng)絡(luò)的集合的數(shù)學(xué)模型,模擬的一些觀測特性的生物神經(jīng)系統(tǒng),并利用類比的自適應(yīng)生物學(xué)習(xí)。激活功能 39。雖然有許多不同類型的學(xué)習(xí)規(guī)則,但三角洲規(guī)則是 BP神經(jīng)網(wǎng)絡(luò)用的最常見的學(xué)習(xí)規(guī)則。另一方面,因為這些企業(yè)雙贏 的關(guān)系, 屬于一個具體供應(yīng)鏈 的 企業(yè)可以分享一些重要的信息 。該模型的結(jié)構(gòu)如下所示: 在一些采樣數(shù)據(jù)里,我們可以選擇一個合適的傳遞函數(shù)并且培訓(xùn)這種模式。Great degree of robustness and fault tolerance。 p :The punishment cost for shorts of per product。 such as: the price of product, the change of marketing seasons, the internal rate of return of total vocation. Of cause, as for a specific enterprise ,the factors may be variable ξ may not conform to a deterministic probability distribution, and the optimum inventory strategy obtained in this way may not meet with the realistic requirement. IMPROVEMENT BASED ON THE MECHANIC OF SUPPLY CHAIN MANAGEMENT The direct and profound effect to the enterprise by the think of SCM is the change of decision mode: Change from the traditional, blocked longitudinal think mode into transversal, opening think mode. With the developing of IT and logistics technology, enterprise may have the ability to realize the translation based the Intra\Extra, Inter, and EDI technology .The operational mechanic of enterprise based on the SCM is shown below: According to the figure above, enterprises to one specific SC may share some important information which is the business secret for enterprise under the information enterprise traditional SC. With this information enterprise can improve prediction for inventory, marketing, the precision of etc. MULTIPLELAYER BP NEURAL NETWORK (1) Generalization of BPNN Artificial Neural Network, ANN for short, is an informationprocessing paradigm inspired by the way the densely interconnected, parallel structure of the mammalian brain processes information. In other words, artificial neural works are collections of mathematical models that emulate some of the observed properties of biological nervous systems and draw on the analogies of adaptive biological learning. The key element of the ANN paradigm is the novel structure of the information processing system. It is posed of a large number of highly interconnected processing elemen
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