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Oktie Hassanzadeh

IBM Research

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#artificial intelligence Preprint Oct 2026

Semantic Views: Certified Reuse of LLM Labels Across Semantic Queries

Semantic query engines evaluate natural-language filters with a large language model, and every evaluation is a costly oracle call. Optimizers that reduce these calls face a dilemma: cascades that trust a cheap proxy miss their precision and recall targets on many queries, methods with finite-sample guarantees save lit...

Oktie Hassanzadeh, D. Subramanian · 0 citations
Preprint Aug 2026

SAGE: A Unified Algebra and Self-Adaptive Execution for AI Functions in SQL

SAGE achieves the strongest overall SemBench performance and, on a representative factorable join, reduces pairwise model calls by more than two orders of magnitude, yielding a 358-fold measured cost reduction.

Xiangqi Wang, Nhan H. Pham, Oktie Hassanzadeh et al. · 0 citations
Aug 2026

Text-to-SQL Evaluation Toolkit

This work demonstrates Text2SQL-Eval, an open-source, modular framework for rigorous evaluation of text-to-SQL systems, which provides a comprehensive suite of over twelve metrics, spanning execution accuracy, SQL syntactic equivalence, and LLM-as-judge scoring.

Oktie Hassanzadeh, Yotam Perlitz, Nhan H. Pham et al. · 0 citations

Towards Universal Tabular Embeddings: A Benchmark Across Data Tasks

TEmBed is introduced, the Tabular Embedding Test Bed, a unified benchmark for systematically evaluating tabular embeddings across four representation levels: cell, row, column, and table and shows that which model to use depends on the task and representation level.

Liane Vogel, Kavitha Srinivas, N. D'Souza et al. · 4 citations

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