Title
An encoder-decoder switch network for purchase prediction.
Abstract
Users in e-commerce tend to click on items of their interest. Eventually, the more frequently an item is clicked by a user, the more likely the item will be purchased by the user after all. However, what if a user clicked on every item only once before purchases? This is a frequently observed user behavior in reality, but predicting which of the clicked items will be purchased is a challenging task. This paper addresses a practical yet widely overlooked task of predicting purchase items within a non-duplicate click session, i.e., a session in which every item is clicked only once. We propose an encoder–decoder neural architecture to simultaneously model users’ click and purchase behaviors. The encoder captures a user’s intent contained in the user’s click session, and the decoder, which is equipped with pointer network via a switch gate, extracts relevant clicked items for future purchase candidates. To the best of our knowledge, our work is the first to address the task of purchase prediction given non-duplicate click sessions. Experiments demonstrate that our proposed method outperforms the state-of-the-art purchase prediction methods by up to 18% in terms of recall.
Year
DOI
Venue
2019
10.1016/j.knosys.2019.104932
Knowledge-Based Systems
Keywords
Field
DocType
Recommender system,Purchase prediction,Sequential prediction
Pointer (computer programming),Encoder decoder,Information retrieval,Computer science,Network switch,Artificial intelligence,Encoder,Recall,Machine learning
Journal
Volume
ISSN
Citations 
185
0950-7051
1
PageRank 
References 
Authors
0.34
0
3
Name
Order
Citations
PageRank
Chanyoung Park116312.04
Dong Hyun Kim21647.55
Hwanjo Yu31715114.02