Yeasir Rayhan
yrayhan [at] purdue [dot] edu

I am a PhD candidate in Computer Science at Purdue University, advised by Professor Walid G. Aref.
My research leverages machine learning and modern hardware to build fast and adaptive database systems across heterogeneous hardware and workloads. My work spans learned query optimization, hardware-aware scheduling on NUMA and chiplet servers, and buffer management for CXL tiered memory. More recently, I have been building database agents by designing harnesses that enable LLMs to autonomously interact with and optimize database systems.

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News
Jul '26 Gen-DBA: Generative Database Agents is out on arXiv!
Apr '26 Virtual-Memory Assisted Buffer Management in Tiered Memory has been accepted in DaMoN 2026!
Feb '26 Passed my PhD preliminary exam!
Nov '25 P-MOSS: Scheduling Main-Memory Indexes Over NUMA Servers Using Next Token Prediction has been accepted in SIGMOD 2026!
Apr '25 Exploring Next Token Prediction for Optimizing Databases has been accepted in aiDM@SIGMOD 2025!
Mar '25 Gave a talk on "Profile-Guided Learned Database Kernels" at the inaugural Purdue CS Graduate Symposium.
Selected Works
[9] iFVS: Towards Instance-Optimized Filtered Vector Search.
Abdullah Al-Mamun*, Yeasir Rayhan*, Walid G. Aref
Arxiv/Preprint, 2026
[arXiv]

[8] Gen-DBA: Generative Database Agents.
Yeasir Rayhan, Walid G. Aref
Arxiv/Preprint, 2026
[arXiv]

[7] Virtual-Memory Assisted Buffer Management In Tiered Memory.
Yeasir Rayhan, Walid G. Aref
DaMoN, 2026
[PDF] [In-house] [arXiv] [Slide] [Code]

[6] P-MOSS: Scheduling Main-Memory Indexes Over NUMA Servers Using Next Token Prediction.
Yeasir Rayhan, Walid G. Aref
SIGMOD, 2026
[PDF] [arXiv] [Slide] [Poster] [Code]

[5] Exploring Next Token Prediction For Optimizing Databases.
Yeasir Rayhan, Walid G. Aref
aiDM@SIGMOD, 2025
[In-house] [arXiv] [Slide]

[4] Revisiting Page Migration for Main-Memory Database Systems.
Yeasir Rayhan, Walid G. Aref
Arxiv/Preprint, 2025
[arXiv]

[3] GTX: A Write-Optimized Latch-free Graph Data System with Transactional Support
Libin Zhou, Lu Xing, Yeasir Rayhan, Walid G. Aref
SIGMOD, 2025
[PDF] [arXiv] [Code]

[2] SIMD-ified R-tree Query Processing and Optimization.
Yeasir Rayhan, Walid G. Aref
SIGSPATIAL, 2023
[PDF] [Code]

[1] ILX: Intelligent "Location+X" Data Systems (Vision Paper)
Walid G. Aref, Ahmed M. Aly, Anas Daghistani, Yeasir Rayhan, Jianguo Wang, Libin Zhou
Arxiv/Preprint, 2022
[arXiv]