Given a contingency table from a clustering result with class labels as follows, calculate the external clustering validation measures.$$

$$ Class $1$ Class $2$

Cluster $1$: $1250$

Cluster $2$: $3430$

Cluster $3$: $5610$

Answer the following, rounding to the $3$rd decimal place.

Purity for cluster $1$:

Purity for cluster $2$:

Purity for cluster $3$:

Purity for overall clustering:

Recall for cluster $1$:

Recall for cluster $2$:

Recall for cluster $3$:

Recall for overall clustering:

Answer is not complete.

Average utilization

Given a contingency table from a clustering result with class labels as follows, calculate the external clustering validation

measures.

Answer the following, rounding to the $3$rd decimal place.

Purity for cluster $1$:

Purity for cluster $2$:

Purity for cluster $3$:

Purity for overall clustering:

Recall for cluster $1$:

Recall for cluster $2$ :

Recall for cluster $3$:

Recall for overall clustering: