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We propose a novel generative model to explore both local and global context for joint learning topics and topic-specific word embeddings. In particular, we assume that global latent topics are shared across documents, a word is generated…

Computation and Language · Computer Science 2020-08-12 Lixing Zhu , Yulan He , Deyu Zhou

This article introduces a novel and fast method for refining pre-trained static word or, more generally, token embeddings. By incorporating the embeddings of neighboring tokens in text corpora, it continuously updates the representation of…

Computation and Language · Computer Science 2025-04-22 Mario M. Kubek , Shiraj Pokharel , Thomas Böhme , Emma L. McDaniel , Herwig Unger , Armin R. Mikler

This paper presents an approach to improve text embedding models through contrastive fine-tuning on small datasets augmented with expert scores. It focuses on enhancing semantic textual similarity tasks and addressing text retrieval…

Computation and Language · Computer Science 2024-08-23 Jun Lu , David Li , Bill Ding , Yu Kang

The choice of embedding model is a crucial step in the design of Retrieval Augmented Generation (RAG) systems. Given the sheer volume of available options, identifying clusters of similar models streamlines this model selection process.…

Information Retrieval · Computer Science 2024-07-12 Laura Caspari , Kanishka Ghosh Dastidar , Saber Zerhoudi , Jelena Mitrovic , Michael Granitzer

Most existing word embedding methods can be categorized into Neural Embedding Models and Matrix Factorization (MF)-based methods. However some models are opaque to probabilistic interpretation, and MF-based methods, typically solved using…

Computation and Language · Computer Science 2015-08-18 Shaohua Li , Jun Zhu , Chunyan Miao

Learning domain-invariant visual representations is important to train a model that can generalize well to unseen target task domains. Recent works demonstrate that text descriptions contain high-level class-discriminative information and…

Computer Vision and Pattern Recognition · Computer Science 2024-12-25 Nokyung Park , Daewon Chae , Jeongyong Shim , Sangpil Kim , Eun-Sol Kim , Jinkyu Kim

Language models can be viewed as functions that embed text into Euclidean space, where the quality of the embedding vectors directly determines model performance, training such neural networks involves various uncertainties. This paper…

Computation and Language · Computer Science 2025-03-31 Yifei Duan , Raphael Shang , Deng Liang , Yongqiang Cai

In recent years, word embeddings have been surprisingly effective at capturing intuitive characteristics of the words they represent. These vectors achieve the best results when training corpora are extremely large, sometimes billions of…

Computation and Language · Computer Science 2017-12-06 Willie Boag , Hassan Kané

Biomedical word embeddings are usually pre-trained on free text corpora with neural methods that capture local and global distributional properties. They are leveraged in downstream tasks using various neural architectures that are designed…

Computation and Language · Computer Science 2021-07-26 Jiho Noh , Ramakanth Kavuluru

Despite advances in open-domain dialogue systems, automatic evaluation of such systems is still a challenging problem. Traditional reference-based metrics such as BLEU are ineffective because there could be many valid responses for a given…

Computation and Language · Computer Science 2019-04-25 Sarik Ghazarian , Johnny Tian-Zheng Wei , Aram Galstyan , Nanyun Peng

With an increase of dataset availability, the potential for learning from a variety of data sources has increased. One particular method to improve learning from multiple data sources is to embed the data source during training. This allows…

Computation and Language · Computer Science 2021-12-08 Rob van der Goot , Miryam de Lhoneux

In many modern day systems such as information extraction and knowledge management agents, ontologies play a vital role in maintaining the concept hierarchies of the selected domain. However, ontology population has become a problematic…

Computation and Language · Computer Science 2019-06-07 Vindula Jayawardana , Dimuthu Lakmal , Nisansa de Silva , Amal Shehan Perera , Keet Sugathadasa , Buddhi Ayesha , Madhavi Perera

This paper presents CLEAR, a retrieval model that seeks to complement classical lexical exact-match models such as BM25 with semantic matching signals from a neural embedding matching model. CLEAR explicitly trains the neural embedding to…

Information Retrieval · Computer Science 2021-03-30 Luyu Gao , Zhuyun Dai , Tongfei Chen , Zhen Fan , Benjamin Van Durme , Jamie Callan

There are massive amounts of textual data residing in databases, valuable for many machine learning (ML) tasks. Since ML techniques depend on numerical input representations, word embeddings are increasingly utilized to convert symbolic…

Databases · Computer Science 2020-01-23 Michael Günther , Maik Thiele , Wolfgang Lehner

Word embeddings and language models have transformed natural language processing (NLP) by facilitating the representation of linguistic elements in continuous vector spaces. This review visits foundational concepts such as the…

Recent studies have demonstrated the usefulness of contextualized word embeddings in unsupervised semantic frame induction. However, they have also revealed that generic contextualized embeddings are not always consistent with human…

Computation and Language · Computer Science 2023-04-28 Kosuke Yamada , Ryohei Sasano , Koichi Takeda

The scientific world is changing at a rapid pace, with new technology being developed and new trends being set at an increasing frequency. This paper presents a framework for conducting scientific analyses of academic publications, which is…

Computation and Language · Computer Science 2021-12-28 Trisha Singhal , Junhua Liu , Lucienne T. M. Blessing , Kwan Hui Lim

General-purpose text embedding models underpin a wide range of NLP and information retrieval applications, and are typically trained on large-scale multi-task corpora to encourage broad generalization. However, it remains unclear how…

Information Retrieval · Computer Science 2026-02-10 Hengran Zhang , Keping Bi , Jiafeng Guo , Jiaming Zhang , Wenbo Yang , Daiting Shi , Xueqi Cheng

Embeddings are functions that map raw input data to low-dimensional vector representations, while preserving important semantic information about the inputs. Pre-training embeddings on a large amount of unlabeled data and fine-tuning them…

Machine Learning · Computer Science 2020-08-21 Congzheng Song , Ananth Raghunathan

Retrieval-Augmented Generation systems depend on retrieving semantically relevant document chunks to support accurate, grounded outputs from large language models. In structured and repetitive corpora such as regulatory filings, chunk…

Information Retrieval · Computer Science 2026-01-21 Raquib Bin Yousuf , Shengzhe Xu , Mandar Sharma , Andrew Neeser , Chris Latimer , Naren Ramakrishnan