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Lecture Notes 1 Introduction 1 ZHANGXI LIN ISQS 7339 TEXAS TECH UNIVERSITY ISQS 7342-001, Business Analytics What are different from data mining course? Problem solving oriented More detailed algorithms and methods SAS EM 5.x Data mining + optimization Case 1 – Impacts of Disaster on the Virtual Community 3 Research question: How the Sichuan earthquake impact Chinese – a view into the online community Hypothesis Themes in VC are diversified and dynamic A major disaster will have significant impacts on VC VCs will be focusing on the similar themes after a disaster in a period of time. Methodology Text mining 3.5 GB text data collected from a popular Chinese chatting room. ISQS 7342-001, Business Analytics Source: The New York Times Sichuan - Chengdu Population: 7 million A town was totally eliminated Keywords used in A Chinese Online Chatting Room Before 5/12 China, me, world, country, society, Beijing, children, job, government, Olympic game, time, company, job On 5/12 Earthquake, China, me, happen, Sichuan, country, job, time, situation, government, today, life After 5/12 within a month Earthquake, affected region, people, happen, Wenchuan, disaster, hope, donation, government, lives The Dynamic of Daily Themes Using that of 4/24 as the Benchmark 140 130 120 110 100 90 80 Series1 70 4 per. Mov. Avg. (Series1) 60 07/10/08 07/03/08 06/26/08 06/19/08 06/12/08 06/05/08 05/29/08 05/22/08 05/15/08 05/08/08 05/01/08 04/24/08 50 Theme Distances from Different Benchmark Days 5/12, when the earthquake happened 5/19, the national memorial day for the victims in the earthquake At 2p of 5/19, the search engine traffic in China was zero. Case 2 – Location Optimization of Multiple Data Backup Centers 10 Problem M regional financial service branches (RFSB) distributed in different cities in a country N data backup centers are to be built to service these branches, which will be selected from N0 possible locations There are K kinds of disasters with different level of risk (in probability) regarding T time periods in a year, which vary from location to location Objective Choose N locations to build data backup centers for M RFSB to minimize the risk probability in each time period. ISQS 7342-001, Business Analytics Courseware SAS Course Notes Textbooks Decision Tree Decision Tree AAEM (Ch1, 2) SAS EM 5.x DMDT CRM Clustering Mathematical Programming PMADV OROPT SAS Programming