id	keyword
ajis02-1180	clusters
ajis02-1180	overlap
ajis02-1180	clustering
ajis02-1180	term
ajis02-1180	level
ajis02-1180	text
ajis02-1180	hierarchy
ajis02-1180	gsom
ajis02-1180	categories
ajis02-1180	value
ajis02-1180	document
ajis02-1180	alahakoon