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Tabular data in digital documents is widely used to express compact and important information for readers. However, it is challenging to parse tables from unstructured digital documents, such as PDFs and images, into machine-readable format…

计算机视觉与模式识别 · 计算机科学 2022-03-09 Bin Xiao , Murat Simsek , Burak Kantarci , Ala Abu Alkheir

Data synthesis is gaining momentum as a privacy-enhancing technology. While single-table tabular data generation has seen considerable progress, current methods for multi-table data often lack the flexibility and expressiveness needed to…

机器学习 · 计算机科学 2025-11-11 Davide Scassola , Sebastiano Saccani , Luca Bortolussi

Knowledge Graphs (KG), composed of entities and relations, provide a structured representation of knowledge. For easy access to statistical approaches on relational data, multiple methods to embed a KG into f(KG) $\in$ R^d have been…

机器学习 · 计算机科学 2020-07-02 So Yeon Min , Preethi Raghavan , Peter Szolovits

We present CAISSON, a novel hierarchical approach to Retrieval-Augmented Generation (RAG) that transforms traditional single-vector search into a multi-view clustering framework. At its core, CAISSON leverages dual Self-Organizing Maps…

计算与语言 · 计算机科学 2024-12-05 Igor Halperin

Recently, data-driven methods have shown great promise for discovering governing equations from simulation or experimental data. However, most existing approaches are limited to scalar equations, with few capable of identifying tensor…

数学物理 · 物理学 2026-01-14 Tianyi Chen , Hao Yang , Wenjun Ma , Jun Zhang

A chart sequence is used to describe a series of visualization charts generated in the exploratory analysis by data analysts. It provides information details in each chart as well as a logical relationship among charts. While existing…

人机交互 · 计算机科学 2019-08-08 Danqing Shi , Yang Shi , Xinyue Xu , Nan Chen , Siwei Fu , Hongjin Wu , Nan Cao

Relation extraction (RE) aims at extracting the relation between two entities from the text corpora. It is a crucial task for Knowledge Graph (KG) construction. Most existing methods predict the relation between an entity pair by learning…

计算与语言 · 计算机科学 2020-11-30 Jun Kuang , Yixin Cao , Jianbing Zheng , Xiangnan He , Ming Gao , Aoying Zhou

Zero-shot stance detection (ZSSD) seeks to determine the stance of text toward previously unseen targets, a task critical for analyzing dynamic and polarized online discourse with limited labeled data. While large language models (LLMs)…

计算与语言 · 计算机科学 2026-01-27 Bowen Zhang , Jun Ma , Fuqiang Niu , Li Dong , Jinzhou Cao , Genan Dai

Inductive link prediction for knowledge graph aims at predicting missing links between unseen entities, those not shown in training stage. Most previous works learn entity-specific embeddings of entities, which cannot handle unseen…

人工智能 · 计算机科学 2022-08-29 Xiaohan Xu , Peng Zhang , Yongquan He , Chengpeng Chao , Chaoyang Yan

Tensor factorization models offer an effective approach to convert massive electronic health records into meaningful clinical concepts (phenotypes) for data analysis. These models need a large amount of diverse samples to avoid population…

机器学习 · 计算机科学 2017-10-13 Yejin Kim , Jimeng Sun , Hwanjo Yu , Xiaoqian Jiang

Knowledge Graph Question Answering aims to answer natural language questions by reasoning over structured knowledge graphs. While large language models have advanced KGQA through their strong reasoning capabilities, existing methods…

Knowledge graphs (KGs) are powerful tools that codify relational behaviour between entities in knowledge bases. KGs can simultaneously model many different types of subject-predicate-object and higher-order relations. As such, they offer a…

社会与信息网络 · 计算机科学 2020-10-27 Charilaos I. Kanatsoulis , Nicholas D. Sidiropoulos

Extracting multiple relations from text sentences is still a challenge for current Open Relation Extraction (Open RE) tasks. In this paper, we develop several Open RE models based on the bidirectional LSTM-CRF (BiLSTM-CRF) neural network…

计算与语言 · 计算机科学 2024-07-10 Tao Ni , Qing Wang , Gabriela Ferraro

Recommender systems (RSs) have been a widely exploited approach to solving the information overload problem. However, the performance is still limited due to the extreme sparsity of the rating data. With the popularity of Web 2.0, the…

信息检索 · 计算机科学 2017-05-24 Jianguo Li , Yong Tang , Jiemin Chen

Background Semantic Web Technology (SWT) makes it possible to integrate and search the large volume of life science datasets in the public domain, as demonstrated by well-known linked data projects such as LODD, Bio2RDF, and Chem2Bio2RDF.…

定量方法 · 定量生物学 2011-06-27 Qian Zhu , Yuyin Sun , Sashikiran Challa , Ying Ding , Michael S. Lajiness , David J. Wild

Federated learning (FL) has emerged with increasing popularity to collaborate distributed medical institutions for training deep networks. However, despite existing FL algorithms only allow the supervised training setting, most hospitals in…

计算机视觉与模式识别 · 计算机科学 2021-06-17 Quande Liu , Hongzheng Yang , Qi Dou , Pheng-Ann Heng

Causal learning is a beneficial approach to analyze the cause and effect relationships among variables in a dataset. A causal graph can be generated from a dataset using a particular causal algorithm, for instance, the PC algorithm or Fast…

机器学习 · 计算机科学 2019-10-09 Teny Handhayani , James Cussens

Point-of-Interest (POI) recommendation is one of the most important location-based services helping people discover interesting venues or services. However, the extreme user-POI matrix sparsity and the varying spatio-temporal context pose…

机器学习 · 计算机科学 2020-09-02 Xianjing Wang , Flora D. Salim , Yongli Ren , Piotr Koniusz

Pre-trained language models (PLMs) have demonstrated strong performance in sequential recommendation (SR), which are utilized to extract general knowledge. However, existing methods still lack domain knowledge and struggle to capture users'…

信息检索 · 计算机科学 2023-08-17 Jianyang Zhai , Xiawu Zheng , Chang-Dong Wang , Hui Li , Yonghong Tian

The growing quantity and complexity of data pose challenges for humans to consume information and respond in a timely manner. For businesses in domains with rapidly changing rules and regulations, failure to identify changes can be costly.…

人工智能 · 计算机科学 2021-04-21 Vivek Khetan , Annervaz K M , Erin Wetherley , Elena Eneva , Shubhashis Sengupta , Andrew E. Fano