An interpretable latent variable model for attribute applicability in the Amazon catalogue
This work provides an interpretable model for Amazon to automatically determine relevant product attributes, which is an incremental improvement for catalog management.
This paper addresses the challenge of predicting attribute applicability for products in the Amazon catalog, such as determining that a shoe has a size but not a battery type. The developed MaxMachine model, a probabilistic latent variable model, improves over the baseline in 17 out of 19 product groups.
Learning attribute applicability of products in the Amazon catalog (e.g., predicting that a shoe should have a value for size, but not for battery-type at scale is a challenge. The need for an interpretable model is contingent on (1) the lack of ground truth training data, (2) the need to utilise prior information about the underlying latent space and (3) the ability to understand the quality of predictions on new, unseen data. To this end, we develop the MaxMachine, a probabilistic latent variable model that learns distributed binary representations, associated to sets of features that are likely to co-occur in the data. Layers of MaxMachines can be stacked such that higher layers encode more abstract information. Any set of variables can be clamped to encode prior information. We develop fast sampling based posterior inference. Preliminary results show that the model improves over the baseline in 17 out of 19 product groups and provides qualitatively reasonable predictions.