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Image captioning models aim at connecting Vision and Language by providing natural language descriptions of input images. In the past few years, the task has been tackled by learning parametric models and proposing visual feature extraction…

Computer Vision and Pattern Recognition · Computer Science 2022-08-23 Sara Sarto , Marcella Cornia , Lorenzo Baraldi , Rita Cucchiara

Nearest neighbor machine translation is a successful approach for fast domain adaption, which interpolates the pre-trained transformers with domain-specific token-level k-nearest-neighbor (kNN) retrieval without retraining. Despite kNN MT's…

Artificial Intelligence · Computer Science 2024-08-20 Hossam Amer , Abdelrahman Abouelenin , Mohamed Maher , Evram Narouz , Mohamed Afify , Hany Awadallah

Context-aware neural machine translation (NMT) incorporates contextual information of surrounding texts, that can improve the translation quality of document-level machine translation. Many existing works on context-aware NMT have focused…

Computation and Language · Computer Science 2021-09-14 Yongkeun Hwang , Hyungu Yun , Kyomin Jung

In contrastive self-supervised learning, positive samples are typically drawn from the same image but in different augmented views, resulting in a relatively limited source of positive samples. An effective way to alleviate this problem is…

Computer Vision and Pattern Recognition · Computer Science 2023-11-14 Xianzhong Long , Chen Peng , Yun Li

Self-supervised learning algorithms based on instance discrimination train encoders to be invariant to pre-defined transformations of the same instance. While most methods treat different views of the same image as positives for a…

Computer Vision and Pattern Recognition · Computer Science 2021-10-08 Debidatta Dwibedi , Yusuf Aytar , Jonathan Tompson , Pierre Sermanet , Andrew Zisserman

Multimodal models leverage large-scale pre-training to achieve strong but still imperfect performance on tasks such as image captioning, visual question answering, and cross-modal retrieval. In this paper, we present a simple and efficient…

Computer Vision and Pattern Recognition · Computer Science 2024-11-01 Neil Chowdhury , Franklin Wang , Sumedh Shenoy , Douwe Kiela , Sarah Schwettmann , Tristan Thrush

Neural machine translation has achieved promising results on many translation tasks. However, previous studies have shown that neural models induce a non-smooth representation space, which harms its generalization results. Recently, kNN-MT…

Computation and Language · Computer Science 2023-06-13 Wenhao Zhu , Jingjing Xu , Shujian Huang , Lingpeng Kong , Jiajun Chen

Recently, $k$NN-MT has shown the promising capability of directly incorporating the pre-trained neural machine translation (NMT) model with domain-specific token-level $k$-nearest-neighbor ($k$NN) retrieval to achieve domain adaptation…

Computation and Language · Computer Science 2022-05-26 Xin Zheng , Zhirui Zhang , Shujian Huang , Boxing Chen , Jun Xie , Weihua Luo , Jiajun Chen

In Neural Machine Translation (NMT), the decoder can capture the features of the entire prediction history with neural connections and representations. This means that partial hypotheses with different prefixes will be regarded differently…

Computation and Language · Computer Science 2018-10-16 Zhisong Zhang , Rui Wang , Masao Utiyama , Eiichiro Sumita , Hai Zhao

We aim to better exploit the limited amounts of parallel text available in low-resource settings by introducing a differentiable reconstruction loss for neural machine translation (NMT). This loss compares original inputs to reconstructed…

Computation and Language · Computer Science 2019-04-05 Xing Niu , Weijia Xu , Marine Carpuat

Retrieval-enhanced language models (LMs), which condition their predictions on text retrieved from large external datastores, have recently shown significant perplexity improvements compared to standard LMs. One such approach, the $k$NN-LM,…

Computation and Language · Computer Science 2022-10-31 Andrew Drozdov , Shufan Wang , Razieh Rahimi , Andrew McCallum , Hamed Zamani , Mohit Iyyer

Generating multiple translation candidates would enable users to choose the one that satisfies their needs. Although there has been work on diversified generation, there exists room for improving the diversity mainly because the previous…

Computation and Language · Computer Science 2024-02-15 Yuto Nishida , Makoto Morishita , Hidetaka Kamigaito , Taro Watanabe

Recently, numbers of works shows that the performance of neural machine translation (NMT) can be improved to a certain extent with using visual information. However, most of these conclusions are drawn from the analysis of experimental…

Computer Vision and Pattern Recognition · Computer Science 2022-09-07 ZhenHao Tang , XiaoBing Zhang , Zi Long , XiangHua Fu

We introduce $k$NN-LMs, which extend a pre-trained neural language model (LM) by linearly interpolating it with a $k$-nearest neighbors ($k$NN) model. The nearest neighbors are computed according to distance in the pre-trained LM embedding…

Computation and Language · Computer Science 2020-02-18 Urvashi Khandelwal , Omer Levy , Dan Jurafsky , Luke Zettlemoyer , Mike Lewis

A great proportion of sequence-to-sequence (Seq2Seq) models for Neural Machine Translation (NMT) adopt Recurrent Neural Network (RNN) to generate translation word by word following a sequential order. As the studies of linguistics have…

Computation and Language · Computer Science 2018-06-14 Junyang Lin , Xu Sun , Xuancheng Ren , Shuming Ma , Jinsong Su , Qi Su

Interpretability techniques in NLP have mainly focused on understanding individual predictions using attention visualization or gradient-based saliency maps over tokens. We propose using k nearest neighbor (kNN) representations to identify…

Computation and Language · Computer Science 2020-10-20 Nazneen Fatema Rajani , Ben Krause , Wengpeng Yin , Tong Niu , Richard Socher , Caiming Xiong

k-nearest-neighbor machine translation (kNN-MT) boosts the translation quality of a pre-trained neural machine translation (NMT) model by utilizing translation examples during decoding. Translation examples are stored in a vector database,…

Computation and Language · Computer Science 2023-10-20 Hiroyuki Deguchi , Hayate Hirano , Tomoki Hoshino , Yuto Nishida , Justin Vasselli , Taro Watanabe

Supervised learning in Neural Machine Translation (NMT) typically follows a teacher forcing paradigm where reference tokens constitute the conditioning context in the model's prediction, instead of its own previous predictions. In order to…

Computation and Language · Computer Science 2023-07-18 Nathaniel Berger , Miriam Exel , Matthias Huck , Stefan Riezler

Although neural machine translation (NMT) with the encoder-decoder framework has achieved great success in recent times, it still suffers from some drawbacks: RNNs tend to forget old information which is often useful and the encoder only…

Computation and Language · Computer Science 2018-05-28 Wen Zhang , Jiawei Hu , Yang Feng , Qun Liu

Even though sequence-to-sequence neural machine translation (NMT) model have achieved state-of-art performance in the recent fewer years, but it is widely concerned that the recurrent neural network (RNN) units are very hard to capture the…

Computation and Language · Computer Science 2018-05-28 Wen Zhang , Jiawei Hu , Yang Feng , Qun Liu