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Messages in human conversations inherently convey emotions. The task of detecting emotions in textual conversations leads to a wide range of applications such as opinion mining in social networks. However, enabling machines to analyze…

Computation and Language · Computer Science 2019-10-02 Peixiang Zhong , Di Wang , Chunyan Miao

Knowledge Graphs (KGs) are foundational structures in many AI applications, representing entities and their interrelations through triples. However, triple-based KGs lack the contextual information of relational knowledge, like temporal…

Artificial Intelligence · Computer Science 2024-07-01 Chengjin Xu , Muzhi Li , Cehao Yang , Xuhui Jiang , Lumingyuan Tang , Yiyan Qi , Jian Guo

Knowledge based dialogue systems have attracted increasing research interest in diverse applications. However, for disease diagnosis, the widely used knowledge graph is hard to represent the symptom-symptom relations and symptom-disease…

Computation and Language · Computer Science 2020-12-29 Xinyan Zhao , Liangwei Chen , Huanhuan Chen

Conversational diagnosis requires multi-turn history-taking, where an agent asks clarifying questions to refine differential diagnoses under incomplete information. Existing approaches often rely on the parametric knowledge of a model or…

Artificial Intelligence · Computer Science 2026-02-04 Jeongmoon Won , Seungwon Kook , Yohan Jo

Knowledge Graphs (KGs) have been used to support a wide range of applications, from web search to personal assistant. In this paper, we describe three generations of knowledge graphs: entity-based KGs, which have been supporting general…

Databases · Computer Science 2023-08-29 Xin Luna Dong

Dialogue generation has been successfully learned from scratch by neural networks, but tends to produce the same general response, e.g., "what are you talking about?", in many conversations. To reduce this homogeneity, external knowledge…

Computation and Language · Computer Science 2021-04-07 Yi-Lin Tuan , Wei Wei , William Yang Wang

Knowledge graph (KG) based reasoning has been regarded as an effective means for the analysis of semantic networks and is of great usefulness in areas of information retrieval, recommendation, decision-making, and man-machine interaction.…

Artificial Intelligence · Computer Science 2024-01-18 Qinghua Huang , Yongzhen Wang

The objective of knowledge graph embedding is to encode both entities and relations of knowledge graphs into continuous low-dimensional vector spaces. Previously, most works focused on symbolic representation of knowledge graph with…

Computation and Language · Computer Science 2016-12-14 Jiacheng Xu , Kan Chen , Xipeng Qiu , Xuanjing Huang

Knowledge graphs (KGs) are structured representations of diversified knowledge. They are widely used in various intelligent applications. In this article, we provide a comprehensive survey on the evolution of various types of knowledge…

Artificial Intelligence · Computer Science 2025-05-22 Xuhui Jiang , Chengjin Xu , Yinghan Shen , Xun Sun , Lumingyuan Tang , Saizhuo Wang , Zhongwu Chen , Yuanzhuo Wang , Jian Guo

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

Generative commonsense reasoning is the capability of a language model to generate a sentence with a given concept-set that is based on commonsense knowledge. However, generative language models still struggle to provide outputs, and the…

Computation and Language · Computer Science 2021-11-02 Jaehyung Seo , Chanjun Park , Sugyeong Eo , Hyeonseok Moon , Heuiseok Lim

Machine Learning has been the quintessential solution for many AI problems, but learning is still heavily dependent on the specific training data. Some learning models can be incorporated with a prior knowledge in the Bayesian set up, but…

Computation and Language · Computer Science 2018-05-22 K M Annervaz , Somnath Basu Roy Chowdhury , Ambedkar Dukkipati

Increasing amounts of freely available data both in textual and relational form offers exploration of richer document representations, potentially improving the model performance and robustness. An emerging problem in the modern era is fake…

Computation and Language · Computer Science 2022-02-16 Boshko Koloski , Timen Stepišnik-Perdih , Marko Robnik-Šikonja , Senja Pollak , Blaž Škrlj

Retrieval-Augmented Generation (RAG) enhances language models by grounding responses in external information, yet explainability remains a critical challenge, particularly when retrieval relies on unstructured text. Knowledge graphs (KGs)…

Machine Learning · Computer Science 2025-07-14 Georgios Balanos , Evangelos Chasanis , Konstantinos Skianis , Evaggelia Pitoura

The production of microchips is a complex and thus well documented process. Therefore, available textual data about the production can be overwhelming in terms of quantity. This affects the visibility and retrieval of a certain piece of…

Information Retrieval · Computer Science 2021-05-12 H. Abu-Rasheed , C. Weber , J. Zenkert , P. Czerner , R. Krumm , M. Fathi

Despite improved digital access to scholarly knowledge in recent decades, scholarly communication remains exclusively document-based. In this form, scholarly knowledge is hard to process automatically. In this paper, we present the first…

Although neural conversation models are effective in learning how to produce fluent responses, their primary challenge lies in knowing what to say to make the conversation contentful and non-vacuous. We present a new end-to-end approach to…

Computation and Language · Computer Science 2019-06-10 Lianhui Qin , Michel Galley , Chris Brockett , Xiaodong Liu , Xiang Gao , Bill Dolan , Yejin Choi , Jianfeng Gao

Multi-modal knowledge graphs (MKGs) include not only the relation triplets, but also related multi-modal auxiliary data (i.e., texts and images), which enhance the diversity of knowledge. However, the natural incompleteness has…

Artificial Intelligence · Computer Science 2022-09-07 Shangfei Zheng , Weiqing Wang , Jianfeng Qu , Hongzhi Yin , Wei Chen , Lei Zhao

Leveraging generative Artificial Intelligence (AI), we have transformed a dataset comprising 1,000 scientific papers into an ontological knowledge graph. Through an in-depth structural analysis, we have calculated node degrees, identified…

Machine Learning · Computer Science 2024-06-12 Markus J. Buehler

Reasoning is a fundamental capability for harnessing valuable insight, knowledge and patterns from knowledge graphs. Existing work has primarily been focusing on point-wise reasoning, including search, link predication, entity prediction,…

Artificial Intelligence · Computer Science 2020-11-09 Lihui Liu , Boxin Du , Heng Ji , Hanghang Tong