Chapter 10: Exercises

1. (*) Feature selection: Explain the following methods for input/feature selection:
   1. Sequential forward selection
   2. Exhaustive search
2. (*) Number of CV procedures for different input selection methods: If you have a classification task of $n$ inputs (features). How many cross-validation procedures you need to perform by using the following input/feature selection methods:
   1. Sequential forward selection
   2. Exhaustive search

---

Data Clustering and Pattern Recognition (資料分群與樣式辨認)