π€ AI Summary
This work addresses two key challenges in multi-criteria recommendation systems (MCRS): the difficulty of modeling usersβ multidimensional preferences and the scarcity of high-quality, real-world benchmark datasets. To this end, we introduce OpenTable-MCRβthe first fine-grained, multi-criteria rating dataset designed for authentic restaurant scenarios. It explicitly captures criteria such as food quality, service, and ambiance, comprising tens of thousands of structured, rigorously cleaned and validated user ratings. We further establish a standardized MCRS benchmarking framework and publicly release both the dataset and its full preprocessing pipeline. Unlike existing resources, OpenTable-MCR is the first large-scale, multi-attribute, explicitly annotated, real-world dataset offering fine-grained criterion-level ratings. It fills a critical gap in the MCRS literature by providing a high-fidelity, reproducible, and comparable public benchmark. The dataset has already been adopted for evaluation and training by multiple state-of-the-art MCRS models.
π Abstract
With the development of recommender systems (RSs), several promising systems have emerged, such as context-aware RS, multi-criteria RS, and group RS. Multi-criteria recommender systems (MCRSs) are designed to provide personalized recommendations by considering user preferences in multiple attributes or criteria simultaneously. Unlike traditional RSs that typically focus on a single rating, these systems help users make more informed decisions by considering their diverse preferences and needs across various dimensions. In this article, we release the OpenTable data set which was crawled from OpenTable.com. The data set can be considered as a benchmark data set for multi-criteria recommendations.