A student team from the University of Macau (UM) received second prize at the Contemporary Undergraduate Mathematical Contest in Modeling of China (CUMCM). This is the fourth consecutive year that UM has received prizes at this contest. This year’s contest attracted 36375 teams from around the country, including 7 teams from Macao.
The UM team were comprised of three students, namely Poon Tsz Yeung, Luo Ruixiao and Yao Yinlong, the team was led by Dr. Liu Zhi from the Department of Mathematics.
Dr. Liu Zhi also received the excellent advisor award. The award is issued every ten years to the selected advisors around the nation.
Organized by the China Society for Industrial and Applied Mathematics, the CUMCM is a national contest in the field of mathematical modelling. It is also the largest mathematical modelling contest in the world. This is the 15th CUMCM contest, attracted more than 100,000 students in 36375 teams from 34 provinces, cities, and autonomous regions in China, as well as from Australia. Only about 5 percent of the teams received first or second prizes.
This year’s contest consisted of two problems: Problem A and Problem B. The awarded team has chosen the Problem B, which is very real-world relevance. The problem is about the photo-taking task pricing. The students were asked to find out the reasons of low rate of successes. The team has employed the logistics regression method to explain the source of low rate of successes and established the task-allocation and pricing model via density based DBSCAN clustering method. Finally, they used the proposed model to conduct forecasting and evaluation.
Department of Mathematics has paid attention to improving the students’ skill of mathematical modelling. To provide consultancy and support to the students around the university, in early 2017, a committee of mathematical modeling consisting of three professors (Prof. Ding Deng, Prof. David Lei and Dr. Liu Zhi) has been established, and a sub-organization of UM Student Union entitled Mathematical and Interdisciplinary Modeling Association is formed. In recent years, in addition to the CUMCM, UM students have also won prizes at the variate modeling contests of United States and China.
澳門大學組成四支學生隊伍參與“2017年度全國大學生數學建模競賽＂，與全國3萬6千支學生隊伍較量。憑卓越表現脫穎而出，奪全國二等獎一項，這是澳大學生連續四年在此賽事獲獎。
由中國工業與應用數學學會舉辦的全國大學生數學建模競賽，為現時全國高校規模最大的基礎性學科競賽，也是世界上規模最大的數學建模競賽。2017年，來自全國33個省、市、自治區、香港和澳門特別行政區，以及澳大利亞的1418所高校36375隊約十萬多名大學生參加了今年9月14日至17日舉行的這項競賽，其中僅有約百分之五的隊伍獲獎。
澳大獲獎隊伍分別由科技學院數學系潘子揚，電腦及資訊科學系羅瑞翛以及工商管理學院姚吟龍三位同學組成，並在澳大數學系劉志博士指導下，榮獲全國二等獎。
劉志博士同時榮獲全國優秀指導教師稱號。全國優秀指導教師由組委會每十年評選一次，此次劉志博士獲獎，體現了競賽組委會對澳大近年來在數學建模方面所做工作的認可。
今屆大賽，大會提供A、B兩個題目供學生選擇作答，A題為CT系統參數標定及成像，B題為“拍照賺錢”的任務定價，澳大獲獎隊伍選擇了B題目。該題目貼近現實，要求參賽隊伍就“拍照賺錢”任務成功率不高的問題展開研究，找出原因並加以解決。澳大隊伍使用logistics回歸方法找到了任務成功率不高的原因，再通過建立優化過的任務分配及定價模型在一般意義上給出了優化的分配和定價模型，通過使用DBSCAN基於密度的聚類模型，在將合適的任務打包的條件下，建立了一個合理的分配和定價模型；並運用任務打包條件下的優化定價模型對新的任務完成情況進行了預測和評估。
澳大數學系近年來重視學生數學建模與資料分析能力的培養，於2017年初年建立了由丁燈副教授，李兆隆副教授和劉志助理教授組成的建模諮詢委員會為學生進行指導，以及由學生組織成立了澳大學生會數學與交叉學科建模學會，不同學院以及不同專業的學生對數學建模的興趣明顯提高，澳大學生以及研究生組成的隊伍連續幾年在多種建模競賽中獲獎，說明數學系對學生所開設的建模培養已取得成效。
Winning students with Ding Deng (1st from left) and Liu Zhi (1st from right)
澳大獲獎學生與丁燈（左一）和劉志（右一）