Finance

Autoencoder

Subject-matter expert

Deep learning

Operating system

Encoder

Machine learning

Physics

Data mining

Mathematical analysis

Artificial intelligence

Economics

Exploit

Component (thermodynamics)

Microeconomics

Preference learning

Order (exchange)

Preference

Mathematics

Domain (mathematical analysis)

Computer security

Computer science

Artificial neural network

Recommender system

Expert system

Thermodynamics

Recommender System (RS) is an essential component of many businesses, especially in e-commerce domain. RS exploits the preference history (rating, purchase, review, etc.) of users in order to provide the recommendations. A user in traditional RS can provide only one rating value about an item. Deep Neural Networks have been used in this single rating system to improve recommendation accuracy in the recent times. However, the single rating systems are inadequate to understand the usersfi preferences about an item. On the other hand, business enterprises such as tourism, e-learning, etc. facilitate users to provide multiple criteria ratings about an item, thus it becomes easier to understand users' preference over single rating system. In this paper, we propose an extended Stacked Autoencoders (a Deep Neural Network technique) to utilize the multi-criteria ratings. The proposed network is designed to learn the relationship between each user's criteria and overall rating efficiently. Experimental results on real world datasets (Yahoo! Movies and TripAdvisor) demonstrate that the proposed approach outperforms state-of-the-art single rating systems and multi-criteria approaches on various performance metrics.

User preference learning in multi-criteria recommendations using stacked auto encoders