存货加速器理论的系统分析

建立存货加速器理论的系统数学模型,针对需求小幅上扬,导致库存的过度增加的情况,提出利用状态反馈实现总库存量的最小,从而避免市场剧烈振荡的出现.     

超市管理系列谈之三与商品库存管理相关的数据报表分析

在零售管理中，大家都很关心商品库存管理指标。本文将分析一些与商品库存有关的数据报表。     

Negative Samples Analysis in Relevance Feedback

Recently, relevance feedback (RF) in content-based image retrieval (CBIR) has been implemented as an online binary classifier to separate the positive samples from the negative samples, where both sets of samples are labeled by the user. In many applications, it is reasonable to assume that all the positive samples are alike and thus that the region of the feature space occupied by the positive samples can be described by a single hypersurface. However, for the negative samples, previous RF methods either treat each one of the negative samples as an isolated point or assume the whole negative set can be described by a single convex hypersurface. In this paper, we argue that these treatments of the negative samples are not sound. Our belief is all positive samples are included in a set and the negative samples split into a small number of subsets, each one of which has a simple distribution. Therefore, we first cluster the negative samples into several groups; for each such negative group, we build a marginal convex machine (MCM) subclassifier between it and the single positive group which results in a series of subclassifiers. These subclassifiers are then incorporated into a biased MCM (BMCM) for RF. Experiments were carried out to prove the advantages of BMCM-based RF over previous methods for RF     

连锁零售企业库存管理系统流程分析与设计

连锁零售业作为一个蓬勃发展的商业模式,降低企业成本、提高工效、减少积压、加快物资周转、杜绝浪费等库存管理系统问题是企业面临的实际问题。分析实际零售企业多模块库存管理系统的各个流程,满足大型连锁企业的实际库存管理需求,突破以往百货店库存无管理或人工管理的局限性,加强信息共享和数据准确性。     

Analysis of Admission and Inventory Control Policies for Production Networks

Problems of inventory control and customer admission control are considered for a manufacturing system that produces one product to meet random demand. Four admission policies are investigated: lost sales, complete backordering, randomized admission, and partial backordering. These policies are combined with an integral inventory control policy, which releases raw items only when an incoming order is accepted and keeps the inventory position (total inventory minus outstanding orders) constant. The objective is to determine the inventory level and the maximum number of backorders, as well as the admission probability that maximize the mean profit rate of the system. The system is modeled as a closed queueing network and its performance is computed analytically. The optimal parameters for each policy are found using exhaustive search and convex analysis. Numerical results show that managing inventory levels and sales jointly through partial backordering achieves higher profit than other control policies.     

基于聚类分析的ABC库存分类方法研究

合理的库存控制不仅能够保证商业企业的经营需求,而且能使库存量保持在合理的水平上。由于库存物资的品种繁多,每种物资的数量、价格也各有不同,因此一般要对库存物资进行有重点的分类控制与管理。ABC分类管理是库存管理中的常用方法,但由于此方法是按事先预定好的分类比例进行划分,往往会在分类边界出现划分误差。使用数据挖掘中的聚类分析思想,采用了K-means算法对ABC分类进行优化,并提出了有效的评价函数。结果证明,优化后的ABC分类提高了商品的分类精度,为决策者提供了更合理的管理依据。     

快速否定选择算法的研究与分析

人工免疫算法具有良好的特性,已被广泛应用于入侵检测、信息恢复、敷据挖掘等领域的研究中,否定选择算法是人工免疫算法中的典型算法,但存在重复检查、检测器查找效率低及逐位比较的时间和空间开销大等问题.我们分析否定选择算法中匹配算法的特点,设计自体、检测器和抗原中检测元素的转换算法,提取自体数、检测数和待检数,引入红黑树建立索引.设计基于红黑树的快速否定选择算法,避免反复提取子串和重复比较寻问题,提高检测效率,最后实现了快速否定选择算法的原型系统,测试、比较了否定选择算法和基于红黑树快速否定选择算法的检测效率,洲试结果表明使用基于红黑树快速否定选择算法检测抗原,能有效的减少比较次数,提高检测效率.     

基于供应链管理的企业库存模拟分析

文中利用供应链管理的思想，对供应链上的两个企业的库存在C 6．0环境下进行模拟分析。通过比较库存的变化说明应用供应链管理思想确实可以有效地进行库存控制，降低流通过程中每个环节的库存量，从而降低企业成本。     

ERP中动态库存成本核算算法的研究

依据FIFO作为核算存货成本是一个最合理的计价方法。但是目前很多企业因为主观和客观的原因无法做到这点。为了解决这个实际问题,研究了两种解决方案,分别给出了相关算法。同时对两种方案的操作性、可行性、适用范围等给出了相关比较。