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Text-to-SQL is a challenging task involving multiple reasoning-intensive subtasks, including natural language understanding, database schema comprehension, and precise SQL query formulation. Existing approaches often rely on handcrafted…

Open-ended question answering (QA) evaluates a model's ability to perform contextualized reasoning beyond factual recall. This challenge is especially acute in practice-based domains, where knowledge is procedural and grounded in…

Computation and Language · Computer Science 2026-01-29 Si Chen , Le Huy Khiem , Annalisa Szymanski , Ronald Metoyer , Ting Hua , Nitesh V. Chawla

Causal discovery from observational data is challenging, especially with large datasets and complex relationships. Traditional methods often struggle with scalability and capturing global structural information. To overcome these…

Machine Learning · Computer Science 2025-07-29 Rezaur Rashid , Gabriel Terejanu

Traditionally, it was accepted that a relational database can be normalized step-by-step, from a set of un-normalized tables to tables in $1NF$, then to $2NF$, then to $3NF$, then (possibly) to $BCNF$. The rule applied to a table in $1NF$…

Databases · Computer Science 2021-07-01 Amir Sapir , Ariel Sapir

In practical scenarios, time series forecasting necessitates not only accuracy but also efficiency. Consequently, the exploration of model architectures remains a perennially trending topic in research. To address these challenges, we…

Machine Learning · Computer Science 2025-08-13 Tianxiang Zhan , Yuanpeng He , Yong Deng , Zhen Li , Wenjie Du , Qingsong Wen

Reasoning on Temporal Knowledge Graphs (TKGs) is essential for predicting future events and time-aware facts. While existing methods are effective at capturing relational dynamics, their performance is limited by a closed-world assumption,…

Artificial Intelligence · Computer Science 2026-04-14 Ze Zhao , Yuhui He , Lyuwen Wu , Gu Tang , Bin Lu , Xiaoying Gan , Luoyi Fu , Xinbing Wang , Chenghu Zhou

Building unified timelines from a collection of written news articles requires cross-document event coreference resolution and temporal relation extraction. In this paper we present an approach event coreference resolution according to: a)…

Computation and Language · Computer Science 2015-06-11 Borja Navarro-Colorado , Estela Saquete

This work introduces the Supervised Expectation-Maximization Framework (SEMF), a versatile and model-agnostic approach for generating prediction intervals with any ML model. SEMF extends the Expectation-Maximization algorithm, traditionally…

Machine Learning · Statistics 2025-09-30 Ilia Azizi , Marc-Olivier Boldi , Valérie Chavez-Demoulin

Recent advances in large language models (LLMs) have propelled research in natural language interfaces to databases. However, most state-of-the-art text-to-SQL systems still depend on complex, multi-stage pipelines. This work proposes a…

Artificial Intelligence · Computer Science 2025-06-03 Fernando Granado , Roberto Lotufo , Jayr Pereira

Despite remarkable advances in the field, LLMs remain unreliable in distinguishing causation from correlation. Recent results from the Corr2Cause dataset benchmark reveal that state-of-the-art LLMs -- such as GPT-4 (F1 score: 29.08) -- only…

Artificial Intelligence · Computer Science 2025-05-28 Wentao Sun , João Paulo Nogueira , Alonso Silva

SQL query rewriting aims to reformulate a query into a more efficient form while preserving equivalence. Most existing methods rely on predefined rewrite rules. However, such rule-based approaches face fundamental limitations: (1) fixed…

Databases · Computer Science 2025-08-18 Dongjie Xu , Yue Cui , Weijie Shi , Qingzhi Ma , Hanghui Guo , Jiaming Li , Yao Zhao , Ruiyuan Zhang , Shimin Di , Jia Zhu , Kai Zheng , Jiajie Xu

The challenge of delivering efficient explanations is a critical barrier that prevents the adoption of model explanations in real-world applications. Existing approaches often depend on extensive model queries for sample-level explanations…

Machine Learning · Computer Science 2026-03-10 Deng Pan , Nuno Moniz , Nitesh Chawla

In text-to-SQL task, seq-to-seq models often lead to sub-optimal performance due to limitations in their architecture. In this paper, we present a simple yet effective approach that adapts transformer-based seq-to-seq model to robust…

Computation and Language · Computer Science 2023-01-31 Kuan Xu , Yongbo Wang , Yongliang Wang , Zujie Wen , Yang Dong

Recent studies have investigated utilizing Knowledge Graphs (KGs) to enhance Quesetion Answering (QA) performance of Large Language Models (LLMs), yet structured KG verbalization remains challengin. Existing methods, such as triple-form or…

Computation and Language · Computer Science 2024-10-10 Sungho Ko , Hyunjin Cho , Hyungjoo Chae , Jinyoung Yeo , Dongha Lee

Relational databases excel at structured data analysis, but real-world queries increasingly require capabilities beyond standard SQL, such as semantically matching entities across inconsistent names, extracting information not explicitly…

Databases · Computer Science 2026-05-15 Yin Lin , Tianjing Zeng , Zhongjun Ding , Rong Zhu , Bolin Ding , H. V. Jagadish , Jingren Zhou

Evidence-based fact checking aims to verify the truthfulness of a claim against evidence extracted from textual sources. Learning a representation that effectively captures relations between a claim and evidence can be challenging. Recent…

Computation and Language · Computer Science 2021-06-03 Canasai Kruengkrai , Junichi Yamagishi , Xin Wang

We explore using T5 (Raffel et al. (2019)) to directly translate natural language questions into SQL statements. General purpose natural language that interfaces to information stored within databases requires flexibly translating natural…

Artificial Intelligence · Computer Science 2020-11-10 Ning Li , Bethany Keller , Mark Butler , Daniel Cer

Question answering in temporal knowledge graphs requires retrieval that is both time-consistent and efficient. Existing RAG methods are largely semantic and typically neglect explicit temporal constraints, which leads to time-inconsistent…

Information Retrieval · Computer Science 2025-10-21 Zulun Zhu , Haoyu Liu , Mengke He , Siqiang Luo

Our universe is homogeneous and isotropic, and its perturbations obey translation and rotation symmetry. In this work we develop Translation and Rotation Equivariant Normalizing Flow (TRENF), a generative Normalizing Flow (NF) model which…

Cosmology and Nongalactic Astrophysics · Physics 2022-08-03 Biwei Dai , Uros Seljak

Reasoning over temporal and numerical data, such as time series, is a crucial aspect of fact-checking. While many systems have recently been developed to handle this form of evidence, their evaluation remains limited by existing datasets,…

Computation and Language · Computer Science 2026-04-21 Marek Strong , Andreas Vlachos