I have a data A which looks like
author_id paper_id prob
731 24943 1
731 24943 1
731 688974 1
731 964345 .8
731 1201905 .9
731 1267992 1
736 249 .2
736 6889 1
736 94345 .7
736 1201905 .9
736 126992 .8
The output I am desiring is:
author_id paper_id
731 24943,24943,688974,1201905,964345
736 6889,1201945,126992,94345,249
That is paper_id are arranged according to decreasing order of
probability.How could this be done?
Thanks
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