Pavel Kordík

Aggregate Function Generalization to Temporal Data

2021 · 2021 IEEE 33rd International Conference on Tools with Artificial Intelligence (ICTAI)

In this article, we define an approximate generalization of aggregate functions for relational data with temporal attributes. This generalization is parametrized to allow simulation of a range of common aggregate functions and optionally take into …

The Future is Sparse: Embedding Compression for Scalable Retrieval in Recommender Systems

2025 · arXiv (Cornell University)

Industry-scale recommender systems face a core challenge: representing entities with high cardinality, such as users or items, using dense embeddings that must be accessible during both training and inference. However, as embedding sizes grow, memory …