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We present a hierarchical convolutional document model with an architecture designed to support introspection of the document structure. Using this model, we show how to use visualisation techniques from the computer vision literature to…

Computation and Language · Computer Science 2015-03-03 Misha Denil , Alban Demiraj , Nando de Freitas

Image captioning has emerged as an interesting research field in recent years due to its broad application scenarios. The traditional paradigm of image captioning relies on paired image-caption datasets to train the model in a supervised…

Computation and Language · Computer Science 2022-02-08 Jiahui Gao , Yi Zhou , Philip L. H. Yu , Shafiq Joty , Jiuxiang Gu

Adversarial diffusion and diffusion-inversion methods have advanced unpaired image-to-image translation, but each faces key limitations. Adversarial approaches require target-domain adversarial loss during training, which can limit…

Computer Vision and Pattern Recognition · Computer Science 2026-02-19 Jiaming Liu , Felix Petersen , Yunhe Gao , Yabin Zhang , Hyojin Kim , Akshay S. Chaudhari , Yu Sun , Stefano Ermon , Sergios Gatidis

In this paper, we propose three methods for generating synthetic samples to train and evaluate multimodal large language models capable of processing both text and speech inputs. Addressing the scarcity of samples containing both…

Audio and Speech Processing · Electrical Eng. & Systems 2024-06-21 Vahid Noroozi , Zhehuai Chen , Somshubra Majumdar , Steve Huang , Jagadeesh Balam , Boris Ginsburg

Formality style transfer is the task of converting informal sentences to grammatically-correct formal sentences, which can be used to improve performance of many downstream NLP tasks. In this work, we propose a semi-supervised formality…

Computation and Language · Computer Science 2020-10-13 Kunal Chawla , Diyi Yang

Unsupervised neural machine translation (UNMT) has recently achieved remarkable results with only large monolingual corpora in each language. However, the uncertainty of associating target with source sentences makes UNMT theoretically an…

Computer Vision and Pattern Recognition · Computer Science 2019-05-28 Yuanhang Su , Kai Fan , Nguyen Bach , C. -C. Jay Kuo , Fei Huang

This paper presents a joint model for performing unsupervised morphological analysis on words, and learning a character-level composition function from morphemes to word embeddings. Our model splits individual words into segments, and…

Computation and Language · Computer Science 2016-06-09 Kris Cao , Marek Rei

Many modern NLP systems rely on word embeddings, previously trained in an unsupervised manner on large corpora, as base features. Efforts to obtain embeddings for larger chunks of text, such as sentences, have however not been so…

Computation and Language · Computer Science 2018-07-10 Alexis Conneau , Douwe Kiela , Holger Schwenk , Loic Barrault , Antoine Bordes

Recent empirical works have successfully used unlabeled data to learn feature representations that are broadly useful in downstream classification tasks. Several of these methods are reminiscent of the well-known word2vec embedding…

Machine Learning · Computer Science 2019-02-26 Sanjeev Arora , Hrishikesh Khandeparkar , Mikhail Khodak , Orestis Plevrakis , Nikunj Saunshi

Text-to-image diffusion models are now capable of generating images that are often indistinguishable from real images. To generate such images, these models must understand the semantics of the objects they are asked to generate. In this…

Computer Vision and Pattern Recognition · Computer Science 2023-12-29 Eric Hedlin , Gopal Sharma , Shweta Mahajan , Hossam Isack , Abhishek Kar , Andrea Tagliasacchi , Kwang Moo Yi

Unsupervised domain adaptation enables to alleviate the need for pixel-wise annotation in the semantic segmentation. One of the most common strategies is to translate images from the source domain to the target domain and then align their…

Computer Vision and Pattern Recognition · Computer Science 2020-08-25 Jinyu Yang , Weizhi An , Sheng Wang , Xinliang Zhu , Chaochao Yan , Junzhou Huang

We propose a novel method for unsupervised semantic image segmentation based on mutual information maximization between local and global high-level image features. The core idea of our work is to leverage recent progress in self-supervised…

Computer Vision and Pattern Recognition · Computer Science 2021-10-08 Robert Harb , Patrick Knöbelreiter

In sentence compression, the task of shortening sentences while retaining the original meaning, models tend to be trained on large corpora containing pairs of verbose and compressed sentences. To remove the need for paired corpora, we…

Computation and Language · Computer Science 2018-09-11 Thibault Févry , Jason Phang

We address the problem of learning self-supervised representations from unlabeled image collections. Unlike existing approaches that attempt to learn useful features by maximizing similarity between augmented versions of each input image or…

Computer Vision and Pattern Recognition · Computer Science 2021-08-17 Omiros Pantazis , Gabriel Brostow , Kate Jones , Oisin Mac Aodha

We introduce Sentence-level Language Modeling, a new pre-training objective for learning a discourse language representation in a fully self-supervised manner. Recent pre-training methods in NLP focus on learning either bottom or top-level…

Computation and Language · Computer Science 2020-11-02 Haejun Lee , Drew A. Hudson , Kangwook Lee , Christopher D. Manning

Self-supervised learning has become a popular approach in recent years for its ability to learn meaningful representations without the need for data annotation. This paper proposes a novel image augmentation technique, overlaying images,…

Computer Vision and Pattern Recognition · Computer Science 2023-01-25 Yinheng Li , Han Ding , Shaofei Wang

We propose a weakly-supervised approach that takes image-sentence pairs as input and learns to visually ground (i.e., localize) arbitrary linguistic phrases, in the form of spatial attention masks. Specifically, the model is trained with…

Computer Vision and Pattern Recognition · Computer Science 2017-05-04 Fanyi Xiao , Leonid Sigal , Yong Jae Lee

Contrastive learning has been extensively studied in sentence embedding learning, which assumes that the embeddings of different views of the same sentence are closer. The constraint brought by this assumption is weak, and a good sentence…

Computation and Language · Computer Science 2022-10-17 Xing Wu , Chaochen Gao , Zijia Lin , Jizhong Han , Zhongyuan Wang , Songlin Hu

Cross-lingual word embeddings aim to capture common linguistic regularities of different languages, which benefit various downstream tasks ranging from machine translation to transfer learning. Recently, it has been shown that these…

Computation and Language · Computer Science 2018-11-02 Pengcheng Yang , Fuli Luo , Shuangzhi Wu , Jingjing Xu , Dongdong Zhang , Xu Sun

We present UNSEE: Unsupervised Non-Contrastive Sentence Embeddings, a novel approach that outperforms SimCSE in the Massive Text Embedding benchmark. Our exploration begins by addressing the challenge of representation collapse, a…

Computation and Language · Computer Science 2024-02-05 Ömer Veysel Çağatan