id	keyword
iajs-4047	clusters
iajs-4047	number
iajs-4047	dataset
iajs-4047	clustering
iajs-4047	algorithm
iajs-4047	genetic
iajs-4047	means
iajs-4047	figure
iajs-4047	gap
iajs-4047	blank
iajs-4047	statistic
iajs-4047	silhouette