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Uncertainty in machine learning models is a timely and vast field of research. In supervised learning, uncertainty can already occur in the first stage of the training process, the annotation phase. This scenario is particularly evident…

机器学习 · 计算机科学 2024-07-24 Katharina Hechinger , Christoph Koller , Xiao Xiang Zhu , Göran Kauermann

Deep neural network models have helped named entity (NE) recognition achieve amazing performance without handcrafting features. However, existing systems require large amounts of human annotated training data. Efforts have been made to…

信息检索 · 计算机科学 2020-10-06 Ying Luo , Hai Zhao , Junlang Zhan

The lack of labeled data is a major obstacle to learning high-quality sentence embeddings. Recently, self-supervised contrastive learning (SCL) is regarded as a promising way to address this problem. However, the existing works mainly rely…

计算与语言 · 计算机科学 2022-03-01 Junhan Yang , Zheng Liu , Shitao Xiao , Jianxun Lian , Lijun Wu , Defu Lian , Guangzhong Sun , Xing Xie

Multilingual knowledge graph (KG) embeddings provide latent semantic representations of entities and structured knowledge with cross-lingual inferences, which benefit various knowledge-driven cross-lingual NLP tasks. However, precisely…

人工智能 · 计算机科学 2018-06-19 Muhao Chen , Yingtao Tian , Kai-Wei Chang , Steven Skiena , Carlo Zaniolo

Current methods for embedding-based query answering over incomplete Knowledge Graphs (KGs) only focus on inductive reasoning, i.e., predicting answers by learning patterns from the data, and lack the complementary ability to do deductive…

人工智能 · 计算机科学 2023-09-01 Medina Andresel , Trung-Kien Tran , Csaba Domokos , Pasquale Minervini , Daria Stepanova

Semantic embedding of knowledge graphs has been widely studied and used for prediction and statistical analysis tasks across various domains such as Natural Language Processing and the Semantic Web. However, less attention has been paid to…

人工智能 · 计算机科学 2021-01-26 Jiaoyan Chen , Pan Hu , Ernesto Jimenez-Ruiz , Ole Magnus Holter , Denvar Antonyrajah , Ian Horrocks

Contextualised word embeddings is a powerful tool to detect contextual synonyms. However, most of the current state-of-the-art (SOTA) deep learning concept extraction methods remain supervised and underexploit the potential of the context.…

计算与语言 · 计算机科学 2021-09-07 Jingqing Zhang , Luis Bolanos , Tong Li , Ashwani Tanwar , Guilherme Freire , Xian Yang , Julia Ive , Vibhor Gupta , Yike Guo

Stance detection on social media is challenging for Large Language Models (LLMs), as emerging slang and colloquial language in online conversations often contain deeply implicit stance labels. Chain-of-Thought (COT) prompting has recently…

计算与语言 · 计算机科学 2023-10-31 Joseph Gatto , Omar Sharif , Sarah Masud Preum

Word embeddings have gained significant attention as learnable representations of semantic relations between words, and have been shown to improve upon the results of traditional word representations. However, little effort has been devoted…

信息检索 · 计算机科学 2019-05-23 Gloria Feher , Andreas Spitz , Michael Gertz

In this work, we investigate the positional encoding methods used in language pre-training (e.g., BERT) and identify several problems in the existing formulations. First, we show that in the absolute positional encoding, the addition…

计算与语言 · 计算机科学 2021-03-16 Guolin Ke , Di He , Tie-Yan Liu

Large ontologies still pose serious challenges to state-of-the-art ontology alignment systems. In the paper we present an approach that combines a lexical index, a neural embedding model and locality modules to effectively divide an input…

人工智能 · 计算机科学 2018-06-01 Ernesto Jimenez-Ruiz , Asan Agibetov , Matthias Samwald , Valerie Cross

Meta-embedding (ME) learning is an emerging approach that attempts to learn more accurate word embeddings given existing (source) word embeddings as the sole input. Due to their ability to incorporate semantics from multiple source…

计算与语言 · 计算机科学 2022-04-26 Danushka Bollegala , James O'Neill

We tackle the problem of identifying metaphors in text, treated as a sequence tagging task. The pre-trained word embeddings GloVe, ELMo and BERT have individually shown good performance on sequential metaphor identification. These…

计算与语言 · 计算机科学 2021-04-08 Rui Mao , Chenghua Lin , Frank Guerin

The limited ability to reason across occupational data from different sources is a long-standing bottleneck for data-driven labour market analytics. Previous research has relied on hand-crafted ontologies that allow such reasoning but are…

机器学习 · 计算机科学 2025-09-08 Heinke Hihn , Dennis A. V. Dittrich , Carl Jeske , Cayo Costa Sobral , Helio Pais , Timm Lochmann

Neural network based word embeddings, such as Word2Vec and GloVe, are purely data driven in that they capture the distributional information about words from the training corpus. Past works have attempted to improve these embeddings by…

计算与语言 · 计算机科学 2020-01-24 Aakash Srinivasan , Harshavardhan Kamarthi , Devi Ganesan , Sutanu Chakraborti

Semantic embedding has been widely investigated for aligning knowledge graph (KG) entities. Current methods have explored and utilized the graph structure, the entity names and attributes, but ignore the ontology (or ontological schema)…

计算与语言 · 计算机科学 2021-05-25 Yuejia Xiang , Ziheng Zhang , Jiaoyan Chen , Xi Chen , Zhenxi Lin , Yefeng Zheng

Recent attempts to ingest external knowledge into neural models for named-entity recognition (NER) have exhibited mixed results. In this work, we present GazSelfAttn, a novel gazetteer embedding approach that uses self-attention and match…

计算与语言 · 计算机科学 2020-04-21 Stanislav Peshterliev , Christophe Dupuy , Imre Kiss

Ontology alignment (a.k.a ontology matching (OM)) plays a critical role in knowledge integration. Owing to the success of machine learning in many domains, it has been applied in OM. However, the existing methods, which often adopt ad-hoc…

人工智能 · 计算机科学 2022-05-05 Yuan He , Jiaoyan Chen , Denvar Antonyrajah , Ian Horrocks

Sentence embedding tasks are important in natural language processing (NLP), but improving their performance while keeping them reliable is still hard. This paper presents a framework that combines pseudo-label generation and model ensemble…

计算与语言 · 计算机科学 2025-01-28 Ziwei Liu , Qi Zhang , Lifu Gao

Embedding is a common technique for analyzing multi-dimensional data. However, the embedding projection cannot always form significant and interpretable visual structures that foreshadow underlying data patterns. We propose an approach that…

人机交互 · 计算机科学 2022-09-26 Jie Li , Chun-qi Zhou