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Knowledge graph embedding models (KGEMs) are used for various tasks related to knowledge graphs (KGs), including link prediction. They are trained with loss functions that consider batches of true and false triples. However, different kinds…

Machine Learning · Computer Science 2024-03-07 Nicolas Hubert , Pierre Monnin , Armelle Brun , Davy Monticolo

Unsupervised sentence embedding aims to obtain the most appropriate embedding for a sentence to reflect its semantic. Contrastive learning has been attracting developing attention. For a sentence, current models utilize diverse data…

Computation and Language · Computer Science 2022-03-03 Hao Wang , Yangguang Li , Zhen Huang , Yong Dou , Lingpeng Kong , Jing Shao

Many attempts have been made in multilingual NLP to ensure that pre-trained language models, such as mBERT or GPT2 get better and become applicable to low-resource languages. To achieve multilingualism for pre-trained language models…

Computation and Language · Computer Science 2024-06-25 Jesse Atuhurra , Hiroyuki Shindo , Hidetaka Kamigaito , Taro Watanabe

Retrieval-augmented generation (RAG) systems rely on accurate document retrieval to ground large language models (LLMs) in external knowledge, yet retrieval quality often degrades in corpora where topics overlap and thematic variation is…

Information Retrieval · Computer Science 2026-01-06 Rodrigo Kataishi

The generation of toxic content by large language models (LLMs) remains a critical challenge for the safe deployment of language technology. We propose a novel framework for implicit knowledge editing and controlled text generation by…

Computation and Language · Computer Science 2025-06-02 Tassilo Klein , Moin Nabi

This paper presents a new technique for creating monolingual and cross-lingual meta-embeddings. Our method integrates multiple word embeddings created from complementary techniques, textual sources, knowledge bases and languages. Existing…

Computation and Language · Computer Science 2021-09-09 Iker García-Ferrero , Rodrigo Agerri , German Rigau

Multi-Task Learning (MTL) is a growing subject of interest in deep learning, due to its ability to train models more efficiently on multiple tasks compared to using a group of conventional single-task models. However, MTL can be impractical…

Machine Learning · Computer Science 2022-11-24 Anish Lakkapragada , Essam Sleiman , Saimourya Surabhi , Dennis P. Wall

Language grounding aims at linking the symbolic representation of language (e.g., words) into the rich perceptual knowledge of the outside world. The general approach is to embed both textual and visual information into a common space -the…

Computation and Language · Computer Science 2021-09-15 Hassan Shahmohammadi , Hendrik P. A. Lensch , R. Harald Baayen

Natural language processing (NLP) models often require a massive number of parameters for word embeddings, resulting in a large storage or memory footprint. Deploying neural NLP models to mobile devices requires compressing the word…

Computation and Language · Computer Science 2017-11-20 Raphael Shu , Hideki Nakayama

Text embeddings are vital for tasks such as text retrieval and semantic textual similarity (STS). Recently, the advent of pretrained language models, along with unified benchmarks like the Massive Text Embedding Benchmark (MTEB), has…

Computation and Language · Computer Science 2024-10-22 Mingxin Li , Zhijie Nie , Yanzhao Zhang , Dingkun Long , Richong Zhang , Pengjun Xie

Neural natural language generation (NLG) and understanding (NLU) models are data-hungry and require massive amounts of annotated data to be competitive. Recent frameworks address this bottleneck with generative models that synthesize weak…

Computation and Language · Computer Science 2021-02-09 Ernie Chang , Vera Demberg , Alex Marin

Distributed word embeddings have shown superior performances in numerous Natural Language Processing (NLP) tasks. However, their performances vary significantly across different tasks, implying that the word embeddings learnt by those…

Computation and Language · Computer Science 2017-09-21 Danushka Bollegala , Kohei Hayashi , Ken-ichi Kawarabayashi

The image-text retrieval task aims to retrieve relevant information from a given image or text. The main challenge is to unify multimodal representation and distinguish fine-grained differences across modalities, thereby finding similar…

Multimedia · Computer Science 2024-05-20 Ziyu Gong , Chengcheng Mai , Yihua Huang

Very low-resource languages, having only a few million tokens worth of data, are not well-supported by multilingual NLP approaches due to poor quality cross-lingual word representations. Recent work showed that good cross-lingual…

Computation and Language · Computer Science 2023-11-22 Viktor Hangya , Silvia Severini , Radoslav Ralev , Alexander Fraser , Hinrich Schütze

Triplet loss has been widely employed in a wide range of computer vision tasks, including local descriptor learning. The effectiveness of the triplet loss heavily relies on the triplet selection, in which a common practice is to first…

Computer Vision and Pattern Recognition · Computer Science 2019-11-28 Xin-Yu Zhang , Le Zhang , Zao-Yi Zheng , Yun Liu , Jia-Wang Bian , Ming-Ming Cheng

Multi-label learning (MLL) requires comprehensive multi-semantic annotations that is hard to fully obtain, thus often resulting in missing labels scenarios. In this paper, we investigate Single Positive Multi-label Learning (SPML), where…

Machine Learning · Computer Science 2024-05-07 Yanxi Chen , Chunxiao Li , Xinyang Dai , Jinhuan Li , Weiyu Sun , Yiming Wang , Renyuan Zhang , Tinghe Zhang , Bo Wang

Sentence embedding is essential for many NLP tasks, with contrastive learning methods achieving strong performance using annotated datasets like NLI. Yet, the reliance on manual labels limits scalability. Recent studies leverage large…

Computation and Language · Computer Science 2025-06-05 Liyang He , Chenglong Liu , Rui Li , Zhenya Huang , Shulan Ruan , Jun Zhou , Enhong Chen

Synthetic training data generation with Large Language Models (LLMs) like Google's Gemma and OpenAI's GPT offer a promising solution to the challenge of obtaining large, labeled datasets for training classifiers. When rapid model deployment…

Imbalanced data represent a distribution with more frequencies of one class (majority) than the other (minority). This phenomenon occurs across various domains, such as security, medical care and human activity. In imbalanced learning,…

Machine Learning · Computer Science 2025-03-25 Hadi Mohammadi , Ehsan Nazerfard , Mostafa Haghir Chehreghani

In implicit collaborative filtering (CF) task of recommender systems, recent works mainly focus on model structure design with promising techniques like graph neural networks (GNNs). Effective and efficient negative sampling methods that…

Information Retrieval · Computer Science 2024-03-29 Kexin Shi , Yun Zhang , Bingyi Jing , Wenjia Wang