Question

1. Which data mining problem cannot be answered easily
by SQL3/OGIS querying?

a) Cluster the data in database into three natural groups

b) Name the River which flows through at least six countries

c) Find the shortest distance path from New Delhi to Kathmandu

d) All of the above

2. Which violate independence assumption?

a)  “Mohamed Lee” is a rare name, even though “Mohamed” is the most frequent first name and “Lee” is the most frequent last name.

b)  Near things are more related than distant things.

c)  Nearby video frames often show common people and objects.

d) All of the above

3. Which does not illustrate spatial-hotspot pattern family?

a) Roads with unusually high rate of traffic accidents

b) Areas with unusually high concentration of museums

c) Cities with unusually high number of students in this MOOC

d) Neighborhood with unusually high rate of an infectious disease (or crime)

e) Country with largest geographic area

4. Which does not illustrate spatial-outlier pattern family?

a) A dozen pine trees growing among thousands of cypress

b) A historical palace (e.g., Forbidden City) in the center of a modern city (e.g., Beijing)

c) Waterfalls in the river Mississippi

d) Vast plains uninterrupted by hills (e.g., parts of Pampas, Argentina away from hills)

5. Which does not illustrate spatial co-occurrence (e.g., colocation)?

a) Loud sound temporally follows bright flash of a lightning.

b) Nuclear power plants usually locate near water

c) Egyptian plover birds live close to Crocodiles

d) College campuses often have bookstores nearby.

6. Which of the following are properties of spatial data?

a) Autocorrelation

b) Heterogeneity

c) Implicit relationships (e.g., neighbor)

d) All of the above

Answer 1