I have a data structure as follow: Customer bought some items. Customer_ID, ITEM_ID Adams, 18 Adams, 29 Adams, 30 Allen, 9 Allen, 27 Anderson,24 Anderson,26 Bailey, 7 Bailey, 30 Baker, 7 Baker, 10 Baker, 19 Baker, 31 Barnes, 10 Barnes, 21 Barnes, 22 Barnes, 31 ... etc How can I write SAS Procedure (PROC CLUSTER? PROC FASTCLU?) to cluster Customers into distinct groups, say Group1, Group2 based on their ITEM_IDs bought? I am using Base SAS 9.4 or SAS EG 6.1. CSV data is attached. THANKS.
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