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Long document question answering is a challenging task due to its demands for complex reasoning over long text. Previous works usually take long documents as non-structured flat texts or only consider the local structure in long documents.…

Computation and Language · Computer Science 2022-10-20 Yuxiang Nie , Heyan Huang , Wei Wei , Xian-Ling Mao

As a natural language generation task, it is challenging to generate informative and coherent review text. In order to enhance the informativeness of the generated text, existing solutions typically learn to copy entities or triples from…

Computation and Language · Computer Science 2021-05-11 Junyi Li , Wayne Xin Zhao , Zhicheng Wei , Nicholas Jing Yuan , Ji-Rong Wen

Machine learning about language can be improved by supplying it with specific knowledge and sources of external information. We present here a new version of the linked open data resource ConceptNet that is particularly well suited to be…

Computation and Language · Computer Science 2018-12-12 Robyn Speer , Joshua Chin , Catherine Havasi

This paper proposes a neural semantic parsing approach -- Sequence-to-Action, which models semantic parsing as an end-to-end semantic graph generation process. Our method simultaneously leverages the advantages from two recent promising…

Computation and Language · Computer Science 2018-09-05 Bo Chen , Le Sun , Xianpei Han

As a crucial step in extractive document summarization, learning cross-sentence relations has been explored by a plethora of approaches. An intuitive way is to put them in the graph-based neural network, which has a more complex structure…

Computation and Language · Computer Science 2020-04-28 Danqing Wang , Pengfei Liu , Yining Zheng , Xipeng Qiu , Xuanjing Huang

Large language models (LLMs) have achieved remarkable performance in natural language understanding and generation tasks. However, they often suffer from limitations such as difficulty in incorporating new knowledge, generating…

Artificial Intelligence · Computer Science 2024-03-05 Yilin Wen , Zifeng Wang , Jimeng Sun

Conditional text generation has been a challenging task that is yet to see human-level performance from state-of-the-art models. In this work, we specifically focus on the Commongen benchmark, wherein the aim is to generate a plausible…

Computation and Language · Computer Science 2020-12-22 Yikang Li , Pulkit Goel , Varsha Kuppur Rajendra , Har Simrat Singh , Jonathan Francis , Kaixin Ma , Eric Nyberg , Alessandro Oltramari

While LLMs have emerged as performant architectures for reasoning tasks, their compositional generalization capabilities have been questioned. In this work, we introduce a Compositional Generalization Challenge for Graph-based Commonsense…

Computation and Language · Computer Science 2024-10-10 Xiyan Fu , Anette Frank

Community detection, aiming to group the graph nodes into clusters with dense inner-connection, is a fundamental graph mining task. Recently, it has been studied on the heterogeneous graph, which contains multiple types of nodes and edges,…

Social and Information Networks · Computer Science 2021-09-07 Linhao Luo , Yixiang Fang , Xin Cao , Xiaofeng Zhang , Wenjie Zhang

Graph neural networks have recently emerged as a very effective framework for processing graph-structured data. These models have achieved state-of-the-art performance in many tasks. Most graph neural networks can be described in terms of…

Computation and Language · Computer Science 2019-11-25 Giannis Nikolentzos , Antoine J. -P. Tixier , Michalis Vazirgiannis

Grounding referring expressions aims to locate in an image an object referred to by a natural language expression. The linguistic structure of a referring expression provides a layout of reasoning over the visual contents, and it is often…

Computer Vision and Pattern Recognition · Computer Science 2020-04-21 Sibei Yang , Guanbin Li , Yizhou Yu

Incorporating knowledge graph into recommender systems has attracted increasing attention in recent years. By exploring the interlinks within a knowledge graph, the connectivity between users and items can be discovered as paths, which…

Information Retrieval · Computer Science 2018-11-13 Xiang Wang , Dingxian Wang , Canran Xu , Xiangnan He , Yixin Cao , Tat-Seng Chua

Current generative knowledge graph construction approaches usually fail to capture structural knowledge by simply flattening natural language into serialized texts or a specification language. However, large generative language model…

Computation and Language · Computer Science 2024-01-19 Zhen Bi , Jing Chen , Yinuo Jiang , Feiyu Xiong , Wei Guo , Huajun Chen , Ningyu Zhang

Generating text from graph-based data, such as Abstract Meaning Representation (AMR), is a challenging task due to the inherent difficulty in how to properly encode the structure of a graph with labeled edges. To address this difficulty, we…

Computation and Language · Computer Science 2019-09-04 Leonardo F. R. Ribeiro , Claire Gardent , Iryna Gurevych

We study the problem of generating interconnected questions in question-answering style conversations. Compared with previous works which generate questions based on a single sentence (or paragraph), this setting is different in two major…

Computation and Language · Computer Science 2019-06-18 Yifan Gao , Piji Li , Irwin King , Michael R. Lyu

Semantic networks provide a useful tool to understand how related concepts are retrieved from memory. However, most current network approaches use pairwise links to represent memory recall patterns. Pairwise connections neglect higher-order…

Computation and Language · Computer Science 2023-04-14 Salvatore Citraro , Simon De Deyne , Massimo Stella , Giulio Rossetti

Document-level relation extraction aims to extract relations among entities within a document. Different from sentence-level relation extraction, it requires reasoning over multiple sentences across a document. In this paper, we propose…

Computation and Language · Computer Science 2020-09-30 Shuang Zeng , Runxin Xu , Baobao Chang , Lei Li

Graphs can represent relational information among entities and graph structures are widely used in many intelligent tasks such as search, recommendation, and question answering. However, most of the graph-structured data in practice suffers…

Information Retrieval · Computer Science 2021-12-30 Hanxiong Chen , Yunqi Li , Shaoyun Shi , Shuchang Liu , He Zhu , Yongfeng Zhang

Knowledge-grounded dialog systems need to incorporate smooth transitions among knowledge selected for generating responses, to ensure that dialog flows naturally. For document-grounded dialog systems, the inter- and intra-document knowledge…

Computation and Language · Computer Science 2022-10-06 Lin Xu , Qixian Zhou , Jinlan Fu , Min-Yen Kan , See-Kiong Ng

Generative commonsense reasoning refers to the task of generating acceptable and logical assumptions about everyday situations based on commonsense understanding. By utilizing an existing dataset such as Korean CommonGen, language…

Computation and Language · Computer Science 2023-06-27 Dahyun Jung , Jaehyung Seo , Jaewook Lee , Chanjun Park , Heuiseok Lim