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Community-based Question Answering (CQA) sites play an important role in addressing health information needs. However, a significant number of posted questions remain unanswered. Automatically answering the posted questions can provide a…

机器学习 · 统计学 2016-07-05 Papis Wongchaisuwat , Diego Klabjan , Siddhartha R. Jonnalagadda

Over the last twenty years, significant progress has been made in designing and implementing Question Answering (QA) systems. However, addressing complex questions, the answers to which are spread across multiple documents, remains a…

计算与语言 · 计算机科学 2026-02-26 Sourav Saha , Dwaipayan Roy , Mandar Mitra

Automatic SQL generation has been an active research area, aiming at streamlining the access to databases by writing natural language with the given intent instead of writing SQL. Current SOTA methods for semantic parsing depend on LLMs to…

机器学习 · 计算机科学 2022-09-22 Samuel Arcadinho , David Aparício , Hugo Veiga , António Alegria

Probabilistic Latent Semantic Analysis is a novel statistical technique for the analysis of two-mode and co-occurrence data, which has applications in information retrieval and filtering, natural language processing, machine learning from…

机器学习 · 计算机科学 2013-01-30 Thomas Hofmann

Recently, neural approaches to spoken content retrieval have become popular. However, they tend to be restricted in their vocabulary or in their ability to deal with imbalanced test settings. These restrictions limit their applicability in…

音频与语音处理 · 电气工程与系统科学 2021-08-25 Bolaji Yusuf , Alican Gok , Batuhan Gundogdu , Murat Saraclar

Generating high-quality question-answer pairs for specialized technical domains remains challenging, with existing approaches facing a tradeoff between leveraging expert examples and achieving topical diversity. We present ExpertGenQA, a…

计算与语言 · 计算机科学 2025-03-06 Haz Sameen Shahgir , Chansong Lim , Jia Chen , Evangelos E. Papalexakis , Yue Dong

The rapid development of LLMs has sparked extensive research into their factual knowledge. Current works find that LLMs fall short on questions around low-frequency entities. However, such proofs are unreliable since the questions can…

计算与语言 · 计算机科学 2025-05-27 Qing Zong , Zhaowei Wang , Tianshi Zheng , Xiyu Ren , Yangqiu Song

In many longitudinal studies, a large number of variables are measured repeatedly over time, with substantial missing data. Existing methods, such as probabilistic principal component analysis (PPCA), are ill-equipped to handle such…

统计方法学 · 统计学 2026-04-27 Xinyu Zhang , Ameer Qaqish , D. Y. Lin , Didong Li

L1-norm Principal-Component Analysis (L1-PCA) of real-valued data has attracted significant research interest over the past decade. However, L1-PCA of complex-valued data remains to date unexplored despite the many possible applications…

数据结构与算法 · 计算机科学 2018-05-23 Nicholas Tsagkarakis , Panos P. Markopoulos , Dimitris A. Pados

Training large language models (LLMs) from scratch can yield models with unique functionalities and strengths, but it is costly and often leads to redundant capabilities. A more cost-effective alternative is to fuse existing pre-trained…

We initiate a systematic study of pseudo-deterministic quantum algorithms. These are quantum algorithms that, for any input, output a canonical solution with high probability. Focusing on the query complexity model, our main contributions…

量子物理 · 物理学 2026-02-20 Hugo Aaronson , Tom Gur , Jiawei Li

Stochastic variational inference (SVI) is emerging as the most promising candidate for scaling inference in Bayesian probabilistic models to large datasets. However, the performance of these methods has been assessed primarily in the…

机器学习 · 统计学 2015-06-29 Amar Shah , David A. Knowles , Zoubin Ghahramani

Solving a system of $m$ multivariate quadratic equations in $n$ variables over finite fields (the MQ problem) is one of the important problems in the theory of computer science. The XL algorithm (XL for short) is a major approach for…

符号计算 · 计算机科学 2024-05-08 Hiroki Furue , Momonari Kudo

Index recommendation is crucial for optimizing database performance. However, existing heuristic- and learning-based methods often rely on inefficient exhaustive search and estimated costs, leading to low efficiency (due to the vast search…

We introduce SPAGHETTI: Semantic Parsing Augmented Generation for Hybrid English information from Text Tables and Infoboxes, a hybrid question-answering (QA) pipeline that utilizes information from heterogeneous knowledge sources, including…

计算与语言 · 计算机科学 2024-06-04 Heidi C. Zhang , Sina J. Semnani , Farhad Ghassemi , Jialiang Xu , Shicheng Liu , Monica S. Lam

Gaussian Process Factor Analysis (GPFA) has been broadly applied to the problem of identifying smooth, low-dimensional temporal structure underlying large-scale neural recordings. However, spike trains are non-Gaussian, which motivates…

Although many large-scale knowledge bases (KBs) claim to contain multilingual information, their support for many non-English languages is often incomplete. This incompleteness gives birth to the task of cross-lingual question answering…

计算与语言 · 计算机科学 2023-02-28 Chen Zhang , Yuxuan Lai , Yansong Feng , Xingyu Shen , Haowei Du , Dongyan Zhao

Many of today's probabilistic programming languages (PPLs) have brittle inference performance: the performance of the underlying inference algorithm is very sensitive to the precise way in which the probabilistic program is written. A…

人工智能 · 计算机科学 2023-02-22 Ellie Y. Cheng , Todd Millstein , Guy Van den Broeck , Steven Holtzen

Existing question answering (QA) systems owe much of their success to large, high-quality training data. Such annotation efforts are costly, and the difficulty compounds in the cross-lingual setting. Therefore, prior cross-lingual QA work…

计算与语言 · 计算机科学 2023-10-18 Bryan Li , Chris Callison-Burch

We study semiparametric factor models in high-dimensional panels where the factor loadings consist of a nonparametric component explained by observed covariates and an idiosyncratic component capturing unobserved heterogeneity. A key…

统计方法学 · 统计学 2025-12-09 Sijie Zheng