You may have to write code or use a software package such as Weka to do the following question.

7. Following data are coming from a Biometric system. It has four sensors. To make the system more cost effective, the designer decides to reduce its sensors to two. Can you suggest, which two sensors can be get rid of and why? Show your work. (Use all of the dataset given to come to an answer.) Depending on the method you choose, you may use the class information or ignore the class information.

S1 S2 S3 S4 Class ( Optional )

4. 3. 1. 0. 0

5. 4. 1. 0. 1

5. 4. 1. 0. 1

6. 3. 5. 2. 1

6. 3. 5. 2. 0

6. 3. 5. 2. 0

5. 3. 1. 0. 0

5. 3. 1. 0. 1

5. 3. 1. 0. 1

7. 3. 4. 1. 1

6. 3. 4. 1. 2

6. 3. 4. 1. 2

5. 2. 4. 1. 2