About: frequency spectrum

Premodifier: frequency
Head noun: spectrum

Same concepts
http://dbpedia.org/resource/Spectral_density

Broader concepts

label	provenance	confidence
valuable resource	isap:60249112	0.621032
natural resource	isap:60249120	0.577346
datum	isap:361050574	0.545446
resource	isap:60249083	0.448903
parameter	isap:185884302	0.402446
article	isap:346280583	0.115104

Narrower concepts

label	provenance	confidence
fig 4	isap:332356067	0.523978
hz	isap:140576513	0.239680
fourier	isap:46502417	0.206666