Statistics by Product Group products customers recommenda edges uy+ get buy +no tions discount discount Book 1031612,863,9775741,6112097,80965,34417,769 DVD 19829 805285 8180,393962,3411723258,189 Music 393.598 794.148 1,443847585,738 7.837 2,739 eo261312395832802701606839 909 467 542,7193,943,08415,646,1213,153.67691,32279,164 eople recommendations hie ow
11 Statistics by Product Group products customers recommendations edges buy + get discount buy + no discount Book 103,161 2,863,977 5,741,611 2,097,809 65,344 17,769 DVD 19,829 805,285 8,180,393 962,341 17,232 58,189 Music 393,598 794,148 1,443,847 585,738 7,837 2,739 Video 26,131 239,583 280,270 160,683 909 467 Full 542,719 3,943,084 15,646,121 3,153,676 91,322 79,164 high low people recommendations 11
Does receiving more recommendations increase the likelihood of buying BOOKS DVDs
Does receiving more recommendations increase the likelihood of buying? BOOKS DVDs 2 4 6 8 10 0 0.01 0.02 0.03 0.04 0.05 0.06 Incoming Recommendations Probability of Buying 10 20 30 40 50 60 0 0.02 0.04 0.06 0.08 Incoming Recommendations Probability of Buying 12
Does sending more recommendations influence more purchases? BOOKS DVDs
Does sending more recommendations influence more purchases? 10 20 30 40 50 60 0 0.1 0.2 0.3 0.4 0.5 Outgoing Recommendations Number of Purchases 20 40 60 80 100 120 140 0 1 2 3 4 5 6 7 Outgoing Recommendations Number of Purchases BOOKS DVDs 13
The probability that the sender gets a credit with increasing numbers of recommendations a consider whether sender has at least one successful recommendation o controls for sender getting credit for purchase that resulted from others recommending the same product to the same person probability of receIving a vels off for dvds
14 The probability that the sender gets a credit with increasing numbers of recommendations consider whether sender has at least one successful recommendation controls for sender getting credit for purchase that resulted from others recommending the same product to the same person 10 20 30 40 50 60 70 80 0 0.02 0.04 0.06 0.08 0.1 0.12 Outgoing Recommendations Probability of Credit probability of receiving a credit levels off for DVDs
Multiple recommendations between two individuals weaken the impact of the bond on purchases BOOKS DVDs
Multiple recommendations between two individuals weaken the impact of the bond on purchases 5 10 15 20 25 30 35 40 4 6 8 10 12x 10-3 Exchanged recommendations Probability of buying 5 10 15 20 25 30 35 40 0.02 0.03 0.04 0.05 0.06 0.07 Exchanged recommendations Probability of buying BOOKS DVDs 15