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Recommender systems often use text-side information to improve their predictions, especially in cold-start or zero-shot recommendation scenarios, where traditional collaborative filtering approaches cannot be used. Many approaches to…

Information Retrieval · Computer Science 2024-10-10 Vojtěch Vančura , Pavel Kordík , Milan Straka

This paper addresses the problem of mapping natural language text to knowledge base entities. The mapping process is approached as a composition of a phrase or a sentence into a point in a multi-dimensional entity space obtained from a…

Computation and Language · Computer Science 2018-08-24 Dimitri Kartsaklis , Mohammad Taher Pilehvar , Nigel Collier

This paper proposes a transformer over transformer framework, called Transformer$^2$, to perform neural text segmentation. It consists of two components: bottom-level sentence encoders using pre-trained transformers, and an upper-level…

Computation and Language · Computer Science 2021-10-15 Kelvin Lo , Yuan Jin , Weicong Tan , Ming Liu , Lan Du , Wray Buntine

Two types of knowledge, triples from knowledge graphs and texts from documents, have been studied for knowledge aware open-domain conversation generation, in which graph paths can narrow down vertex candidates for knowledge selection…

Artificial Intelligence · Computer Science 2019-09-04 Zhibin Liu , Zheng-Yu Niu , Hua Wu , Haifeng Wang

Over the last few years, machine learning over graph structures has manifested a significant enhancement in text mining applications such as event detection, opinion mining, and news recommendation. One of the primary challenges in this…

Computation and Language · Computer Science 2019-11-26 Kayvan Bijari , Hadi Zare , Emad Kebriaei , Hadi Veisi

Knowledge graphs (KGs) have become the standard technology for the representation of factual information in applications such as recommendation engines, search, and question-answering systems. However, the continual updating of KGs, as well…

Artificial Intelligence · Computer Science 2023-07-24 Walid S. Saba

Knowledge Graphs (KGs) are widely employed in artificial intelligence applications, such as question-answering and recommendation systems. However, KGs are frequently found to be incomplete. While much of the existing literature focuses on…

Artificial Intelligence · Computer Science 2024-06-28 Sakher Khalil Alqaaidi , Krzysztof Kochut

Training scene graph classification models requires a large amount of annotated image data. Meanwhile, scene graphs represent relational knowledge that can be modeled with symbolic data from texts or knowledge graphs. While image annotation…

Computer Vision and Pattern Recognition · Computer Science 2021-10-11 Sahand Sharifzadeh , Sina Moayed Baharlou , Martin Schmitt , Hinrich Schütze , Volker Tresp

Knowledge graphs can represent information about the real-world using entities and their relations in a structured and semantically rich manner and they enable a variety of downstream applications such as question-answering, recommendation…

Computation and Language · Computer Science 2023-05-16 Hanieh Khorashadizadeh , Nandana Mihindukulasooriya , Sanju Tiwari , Jinghua Groppe , Sven Groppe

Knowledge graph embedding methods are important for the knowledge graph completion (or link prediction) task. One existing efficient method, PairRE, leverages two separate vectors to model complex relations (i.e., 1-to-N, N-to-1, and…

Artificial Intelligence · Computer Science 2022-10-25 Yizhi Li , Wei Fan , Chao Liu , Chenghua Lin , Jiang Qian

When coping with literary texts such as novels or short stories, the extraction of structured information in the form of a knowledge graph might be hindered by the huge number of possible relations between the entities corresponding to the…

Computation and Language · Computer Science 2020-11-30 Simone Mellace , K Vani , Alessandro Antonucci

Knowledge graphs contain rich relational structures of the world, and thus complement data-driven machine learning in heterogeneous data. One of the most effective methods in representing knowledge graphs is to embed symbolic relations and…

Artificial Intelligence · Computer Science 2018-01-29 Kien Do , Truyen Tran , Svetha Venkatesh

Previous works on knowledge-to-text generation take as input a few RDF triples or key-value pairs conveying the knowledge of some entities to generate a natural language description. Existing datasets, such as WIKIBIO, WebNLG, and E2E,…

Computation and Language · Computer Science 2020-10-27 Liying Cheng , Dekun Wu , Lidong Bing , Yan Zhang , Zhanming Jie , Wei Lu , Luo Si

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

This paper examines the challenging problem of learning representations of entities and relations in a complex multi-relational knowledge graph. We propose HittER, a Hierarchical Transformer model to jointly learn Entity-relation…

Computation and Language · Computer Science 2021-10-07 Sanxing Chen , Xiaodong Liu , Jianfeng Gao , Jian Jiao , Ruofei Zhang , Yangfeng Ji

Graph-to-text generation has benefited from pre-trained language models (PLMs) in achieving better performance than structured graph encoders. However, they fail to fully utilize the structure information of the input graph. In this paper,…

Computation and Language · Computer Science 2025-06-11 Qingyun Wang , Semih Yavuz , Victoria Lin , Heng Ji , Nazneen Rajani

Ontology matching (OM) entails the identification of semantic relationships between concepts within two or more knowledge graphs (KGs) and serves as a critical step in integrating KGs from various sources. Recent advancements in deep OM…

Machine Learning · Computer Science 2023-10-09 Zhu Wang

Knowledge Graph Embedding models have become an important area of machine learning.Those models provide a latent representation of entities and relations in a knowledge graph which can then be used in downstream machine learning tasks such…

Artificial Intelligence · Computer Science 2022-10-18 Md Rashad Al Hasan Rony , Mirza Mohtashim Alam , Semab Ali , Jens Lehmann , Sahar Vahdati

Knowledge tracing (KT) aims to predict learners' future performance based on historical learning interactions. However, existing KT models predominantly focus on data from a single course, limiting their ability to capture a comprehensive…

Artificial Intelligence · Computer Science 2025-05-21 Wenkang Han , Wang Lin , Liya Hu , Zhenlong Dai , Yiyun Zhou , Mengze Li , Zemin Liu , Chang Yao , Jingyuan Chen

The conversational search paradigm introduces a step change over the traditional search paradigm by allowing users to interact with search agents in a multi-turn and natural fashion. The conversation flows naturally and is usually centered…

Computation and Language · Computer Science 2021-04-15 Mariana Leite , Rafael Ferreira , David Semedo , João Magalhães