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Synthetic data has become essential for training foundation models, yet benchmark contamination threatens evaluation integrity. Although existing detection methods identify token-level overlap, they fail to detect semantic-level…

Machine Learning · Computer Science 2025-11-25 Sushant Mehta

NL2SQL systems deployed in industry settings often encounter ambiguous or unanswerable queries, particularly in interactive scenarios with incomplete user clarification. Existing benchmarks typically assume a single source of ambiguity and…

Large Language models (LLMs) have demonstrated significant potential in text-to-SQL reasoning tasks, yet a substantial performance gap persists between existing open-source models and their closed-source counterparts. In this paper, we…

Computation and Language · Computer Science 2025-09-23 Yu Guo , Dong Jin , Shenghao Ye , Shuangwu Chen , Jian Yang , Xiaobin Tan

Recent advancements in large language models (LLMs) have enabled in-context learning (ICL)-based methods that significantly outperform fine-tuning approaches for text-to-SQL tasks. However, their performance is still considerably lower than…

Computation and Language · Computer Science 2024-05-14 Dongjun Lee , Choongwon Park , Jaehyuk Kim , Heesoo Park

NL2SQL approaches have greatly benefited from the impressive capabilities of large language models (LLMs). In particular, bootstrapping an NL2SQL system for a specific domain can be as simple as instructing an LLM with sufficient contextual…

Computation and Language · Computer Science 2025-05-28 Sairam Gurajada , Eser Kandogan , Sajjadur Rahman

Large language models (LLMs) are increasingly powering Text-to-SQL (Text2SQL) systems, enabling non-expert users to query industrial databases using natural language. While test-time scaling strategies have shown promise in LLM-based…

Computation and Language · Computer Science 2025-10-14 Jiajing Guo , Kenil Patel , Jorge Piazentin Ono , Wenbin He , Liu Ren

Data contamination is a known threat to the reliability of model evaluation. However, it remains underexplored in code large language models (LLMs), where contamination often goes beyond exact duplication. We present TRACER, a…

Software Engineering · Computer Science 2026-05-26 Yifeng Di , Xuliang Huang , Tianyi Zhang

The rapid evolution of code largelanguage models underscores the need for effective and transparent benchmarking of their reasoning capabilities. However, the current benchmarking approach heavily depends on publicly available,…

Software Engineering · Computer Science 2025-06-05 Simin Chen , Pranav Pusarla , Baishakhi Ray

Public benchmarks increasingly govern how large language models (LLMs) are ranked, selected, and deployed. We frame this benchmark-centered regime as Silicon Bureaucracy and AI Test-Oriented Education, and argue that it rests on a fragile…

Artificial Intelligence · Computer Science 2026-03-31 Yiliang Song , Hongjun An , Jiangan Chen , Xuanchen Yan , Huan Song , Jiawei Shao , Xuelong Li

The capability gap between open-source and closed-source large language models (LLMs) remains a challenge in text-to-SQL tasks. In this paper, we introduce a synthetic data approach that combines data produced by larger, more powerful…

Computation and Language · Computer Science 2024-08-07 Jiaxi Yang , Binyuan Hui , Min Yang , Jian Yang , Junyang Lin , Chang Zhou

Large language models (LLMs) are increasingly exposed to data contamination, i.e., performance gains driven by prior exposure of test datasets rather than generalization. However, in the context of tabular data, this problem is largely…

Computation and Language · Computer Science 2026-03-31 Matteo Silvestri , Fabiano Veglianti , Flavio Giorgi , Fabrizio Silvestri , Gabriele Tolomei

Open-weight large language models (LLMs) have significantly advanced performance in the Natural Language to SQL (NL2SQL) task. However, their effectiveness diminishes when dealing with large database schemas, as the context length…

Computation and Language · Computer Science 2025-05-21 Dai Quoc Nguyen , Cong Duy Vu Hoang , Duy Vu , Gioacchino Tangari , Thanh Tien Vu , Don Dharmasiri , Yuan-Fang Li , Long Duong

Recent advances in Vision-Language Models (VLMs) have achieved state-of-the-art performance on numerous benchmark tasks. However, the use of internet-scale, often proprietary, pretraining corpora raises a critical concern for both…

Machine Learning · Computer Science 2026-02-03 Jaden Park , Mu Cai , Feng Yao , Jingbo Shang , Soochahn Lee , Yong Jae Lee

Text-to-SQL systems translate natural language (NL) questions into SQL queries, enabling non-technical users to interact with structured data. While large language models (LLMs) have shown promising results on the text-to-SQL task, they…

Computation and Language · Computer Science 2025-06-06 Yue Gong , Chuan Lei , Xiao Qin , Kapil Vaidya , Balakrishnan Narayanaswamy , Tim Kraska

The increasing capability of large language models (LLMs) to generate synthetic content has heightened concerns about their misuse, driving the development of Machine-Generated Text (MGT) detection models. However, these detectors face…

Computation and Language · Computer Science 2025-07-02 Haoyi Li , Angela Yifei Yuan , Soyeon Caren Han , Christopher Leckie

Recent advancements in large language models (LLMs) have significantly improved performance on the Text-to-SQL task. However, prior approaches typically rely on static, pre-processed database information provided at inference time, which…

Computation and Language · Computer Science 2025-06-23 Wenxuan Xie , Yaxun Dai , Wenhao Jiang

Recently, large language models (LLMs) have significantly improved the performance of text-to-SQL systems. Nevertheless, many state-of-the-art (SOTA) approaches have overlooked the critical aspect of system robustness. Our experiments…

Computation and Language · Computer Science 2024-12-18 Geling Liu , Yunzhi Tan , Ruichao Zhong , Yuanzhen Xie , Lingchen Zhao , Qian Wang , Bo Hu , Zang Li

Recent observations have underscored a disparity between the inflated benchmark scores and the actual performance of LLMs, raising concerns about potential contamination of evaluation benchmarks. This issue is especially critical for…

Computation and Language · Computer Science 2024-04-05 Chunyuan Deng , Yilun Zhao , Xiangru Tang , Mark Gerstein , Arman Cohan

Static benchmarks for harmful content detection face limitations in scalability and diversity, and may also be affected by contamination from web-scale pre-training corpora. To address these issues, we propose a framework for synthesizing…

Computation and Language · Computer Science 2026-04-21 Huije Lee , Jisu Shin , Hoyun Song , Changgeon Ko , Jong C. Park

Data contamination has received increasing attention in the era of large language models (LLMs) due to their reliance on vast Internet-derived training corpora. To mitigate the risk of potential data contamination, LLM benchmarking has…

Machine Learning · Computer Science 2025-10-01 Simin Chen , Yiming Chen , Zexin Li , Yifan Jiang , Zhongwei Wan , Yixin He , Dezhi Ran , Tianle Gu , Haizhou Li , Tao Xie , Baishakhi Ray