Multi-energy load forecasting for small-sample integrated energy systems based on neural network Gaussian process and multi-task learning

W Zhang, Y Cai, H Zhan, M Yang - Energy Conversion and Management, 2024 - Elsevier
Multi-energy load forecasting forms the foundation of the operation and scheduling of
integrated energy systems. Nevertheless, insufficient data and underutilization of the …

Prediction intervals for learned cardinality estimation: an experimental evaluation

S Thirumuruganathan, S Shetiya… - 2022 IEEE 38th …, 2022 - ieeexplore.ieee.org
Cardinality estimation is a fundamental and challenging problem in query optimization.
Recently, a number of learned models have been proposed for this task. Often, these …

dbET: Execution Time Distribution-based Plan Selection

Y Li, X Yu, N Koudas, S Lin, C Sun… - Proceedings of the ACM on …, 2023 - dl.acm.org
While selecting the execution plan for a given query based on a single estimated cost is a
generally-adopted strategy, it is usually error-prone and fails to comprehensively profile the …

ShadowAQP: Efficient Approximate Group-by and Join Query via Attribute-Oriented Sample Size Allocation and Data Generation

R Gu, H Li, H Dai, W Huang, J Xue, M Li… - Proceedings of the …, 2023 - dl.acm.org
Approximate query processing (AQP) is one of the key techniques to cope with big data
querying problem on account that it obtains approximate answers efficiently. To address non …

A Cardinality Estimator in Complex Database Systems Based on TreeLSTM

K Qi, J Yu, Z He - Sensors, 2023 - mdpi.com
Cardinality estimation is critical for database management systems (DBMSs) to execute
query optimization tasks, which can guide the query optimizer in choosing the best …

Precision Meets Resilience: Cross-Database Generalization with Uncertainty Quantification for Robust Cost Estimation

S Fan, M Hou, R **, W Ma - Proceedings of the 33rd ACM International …, 2024 - dl.acm.org
Learning-based models have shown promise in addressing query optimization challenges
in the database field, where the learned cost model plays a central role. While these models …

APRNet: Cardinality Estimation Method Based on Attention Mechanism

Z Yang, Y Han, J Zhang - … Conference on Advanced Data Mining and …, 2025 - Springer
The query optimizer relies on accurate cardinality estimation to generate efficient execution
plans. Despite decades of research, existing cardinality estimation remain inaccurate for …

[PDF][PDF] A Robust and Explainable Query Optimization Cost Model Based on Bidirectional Graph Neural Networks

B Chang - 2024 - ruor.uottawa.ca
Learning representations for query plans play a pivotal role in machine learning-based
query optimizers of database management systems. To this end, particular model …

[CYTOWANIE][C] Query Optimization mit Reinforcement Learning

G Spankus