研究生大作业要求

附件1：《数字城市理论与方法》课程结业大作业

系别：资源与信息学院，专业：地图制图学与地理信息工程，年级：2009级

---------------------------------------------------------------------------------------------------------一、文献阅读报告：数字城市的关键技术发展现状分析（要求对某一技术的现状、

特点、难点及热点问题进行论述）。

（一）报告内容

要求就数字城市的某一关键技术（如数字城市数据获取、空间数据库、空间挖掘、空间数据融合、空间数据可视化等）的研究现状、特点、难点及热点问题进行阐述；或者就以上某问题以某篇文章展开讨论。注意不要笼统地写所有的关键技术，只需要对其中某一关键技术进行重点阐述。

（二）报告要求

●独立查阅相关的文献；

●对所查阅的文献进行整理，归纳总结，综合分析；

●按规定内容撰写读书报告；

●报告字数不低于5000字；

●按要求认真完成练习题。

二、Exercises on spatial data mining.

1.Consider the following database(table1)about entertainment facilities in different cities.

(a)Compute the support for item sets{a,b},{c}

and{a,b,c}.

(b)Compute the confidence for the association

rules{a,b}→{c}.

(c)Compute the confidence for the association

rules{c}→{a,b}.

(d)Why is the confidence not symmetric but

support is?

(e)Extract spatial association rules with a

support more than30and a confidence more than

70percent from the following table（table2）.X represents lakes in the database(the total number Table1:Database of facilities

of lakes is100).For each rule,write the support and the confidence.

Table2

2.Which data mining technique would you use for following scenarios:

(a)An astronomer wants to determine if an unknown object in the sky is a special kind of galaxy(i.e.bent-double galaxy).

(b)A meteorologist wants to predict the weather(temperature and precipitation) for the Thanksgiving weekend.

(c)A urban planner who is designing a shopping mall wants to determine which categories of stores tend to be visited together.

(d)A political analyst wants to group cities according to their voting history in last twenty years.

(e)In order to plan to police patrols the public safety department wants to identify hot-spots on a city map.

(f)Epidemiologists want to predict the spread and movement of the Blue Nile virus.

(g)Doctors want to determine if spatial location has an affect on the cancer-rate.

(h)Natural resource planners want to assess the total area of Pine forest stands using remotely sensed images.

3.Which of the following spatial features show positive spatial auto correlation? Why?(Is there a physical/scientific reason?)

Elevation slope,water content,temperature,soil type,population density, annual precipitation(rain,snow)

4.Classify the following spatial point functions into classes of positive spatial autocorrelation,no spatial autocorrelation,and negative spatial autocorrelation: