第2讲_运筹学建模概述幻灯片.ppt

Questions? Discussions? (c) Lei Zhao @ IE, Tsinghua * 疑问？ 讨论？ (c) Lei Zhao @ IE, Tsinghua * Please revisit this chapter often. (c) Lei Zhao @ IE, Tsinghua * 温故而知新 (c) Lei Zhao @ IE, Tsinghua * * * * Analogous to develop a large computer program: major vs. minor bugs * Analogous to develop a large computer program: major vs. minor bugs Managerial reports: solutions (to engineers) - managerial insights (to managers). Data - information - knowledge * Managerial reports: solutions (to engineers) - managerial insights (to managers). Data - information - knowledge * Forecasting system: estimate the failure rates of individual types of parts Data delivery system: process over 15GB data to provide the input for the model (data - information - knowledge) Decision system: control the inventories on a weekly base * Forecasting system: estimate the failure rates of individual types of parts Data delivery system: process over 15GB data to provide the input for the model (data - information - knowledge) Decision system: control the inventories on a weekly base * 第二讲：运筹学建模概述 授课教师：赵磊 2011年春季学期 清华大学工业工程系 Hillier and Lieberman (2005): 第二章 OR Study Phases Define the problem and gather relevant data. Formulate a mathematical model to represent the problem. Develop a computer-based procedure for deriving solutions. Test/Validate the model, and refine it as needed. Prepare for ongoing application of the model. Implement. (c) Lei Zhao @ IE, Tsinghua * 运筹学研究步骤 定义问题并采集相关数据 建立描述该问题的数学模型 编写基于计算机的求解程序 测试/确证模型，必要时对模型进行修正 准备应用模型 实施 (c) Lei Zhao @ IE, Tsinghua * OR Study Phases (c) Lei Zhao @ IE, Tsinghua * Problem Definition Math Model Solutions Model Validation Implementation Preparation 运筹学研究步骤 (c) Lei Zhao @ IE, Tsinghua * 问题定义 数学模型 求解 模型验证 实施 准备 1. Define the Problem and Gather Data Objective(s) Serve as advisory/consulting capacity Identify key decision maker(s) Consider organizational welfare Constraints Alternative decisions Interrelationships with other areas of the organ