title: [Identification of the habitats of Radix Astragali using the correlative characteristic peaks selected by rough sets].
abstract: OBJECTIVE
  Correlative characteristic peaks of HPLC selected by rough sets were employed to identify the habitats of Radix Astragali.
  
  
  METHODS
  Using HPLC fingerprints of Radix Astragali sampled from different sources as examples, the reduct of attributes was achieved via rough sets, and therefore characteristic peaks correlated to identification of habitats were selected. Hierarchical cluster analysis was served for identifying the habitats of Radix Astragali.
  
  
  RESULTS
  The ability of identification only using correlative characteristic peaks is more powerful than the one of whole peaks collected from HPLC fingerprints, and satisfied prediction for unknown samples is achieved.
  
  
  CONCLUSIONS
  Correlative characteristic peaks obtained from rough sets can be regarded as a distinctive foundation for identifying the habitats of Radix Astragali.
authors.affiliation: Shandong University, Pharmacy School, Jinan 250010, China. nielei2004@sdu.edu.cn
authors.forename: Lei
authors.initials: L
authors.lastname: Nie
authors.forename: Hong-bo
authors.initials: HB
authors.lastname: Zhong
authors.forename: Lan
authors.initials: L
authors.lastname: Xiang
authors.forename: Jun
authors.initials: J
authors.lastname: Liu
authors.forename: Xiao-dan
authors.initials: XD
authors.lastname: Lin
mesh_terms: D000465:Algorithms; D027885:Astragalus propinquus / Q000737:chemistry* / Q000145:classification; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D016000:Cluster Analysis; D010598:Pharmacognosy; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011208:Powders; D011786:Quality Control
chemical_list: D011208:Powders