# Figure 4. 14 suggests that we can assign each feature vector (boldsymbol{x}) in the iris data set

## Question:

Figure 4.

14 suggests that we can assign each feature vector \(\boldsymbol{x}\) in the iris data set to one of two clusters, based on the value of \(\boldsymbol{u}_{1}^{\top} \boldsymbol{x}\), where \(\boldsymbol{u}_{1}\) is the first principal component. Plot the sepal lengths against petal lengths and color the points for which \(\boldsymbol{u}_{1}^{\top} \boldsymbol{x}\) differently to points for which \(\boldsymbol{u}_{1}^{\top} \boldsymbol{x} \geqslant 1.

5\). To which species of iris do these clusters correspond?

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**Related Book For**

## Data Science And Machine Learning Mathematical And Statistical Methods

**ISBN:** 9781118710852

1st Edition

**Authors:** Dirk P. Kroese, Thomas Taimre, Radislav Vaisman, Zdravko Botev