Evaluating Deep Vs. Wide & Deep Learners As Contextual Bandits For
Personalized Email Promo Recommendations
- URL: http://arxiv.org/abs/2202.00146v1
- Date: Mon, 31 Jan 2022 23:26:17 GMT
- Title: Evaluating Deep Vs. Wide & Deep Learners As Contextual Bandits For
Personalized Email Promo Recommendations
- Authors: Aleksey A. Kocherzhenko, Nirmal Sobha Kartha, Tengfei Li, Hsin-Yi
(Jenny) Shih, Marco Mandic, Mike Fuller, Arshak Navruzyan
- Abstract summary: Personalization enables businesses to learn customer preferences from past interactions.
We consider the problem of predicting the optimal promotional offer for a given customer out of several options as a contextual bandit problem.
- Score: 1.1213676742918772
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Personalization enables businesses to learn customer preferences from past
interactions and thus to target individual customers with more relevant
content. We consider the problem of predicting the optimal promotional offer
for a given customer out of several options as a contextual bandit problem.
Identifying information for the customer and/or the campaign can be used to
deduce unknown customer/campaign features that improve optimal offer
prediction. Using a generated synthetic email promo dataset, we demonstrate
similar prediction accuracies for (a) a wide and deep network that takes
identifying information (or other categorical features) as input to the wide
part and (b) a deep-only neural network that includes embeddings of categorical
features in the input. Improvements in accuracy from including categorical
features depends on the variability of the unknown numerical features for each
category. We also show that selecting options using upper confidence bound or
Thompson sampling, approximated via Monte Carlo dropout layers in the wide and
deep models, slightly improves model performance.
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