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Existing models of multilingual sentence embeddings require large parallel data resources which are not available for low-resource languages. We propose a novel unsupervised method to derive multilingual sentence embeddings relying only on…

Computation and Language · Computer Science 2021-05-24 Ivana Kvapilıkova , Mikel Artetxe , Gorka Labaka , Eneko Agirre , Ondřej Bojar

Cross-lingual representation learning transfers knowledge from resource-rich data to resource-scarce ones to improve the semantic understanding abilities of different languages. However, previous works rely on shallow unsupervised data…

Computation and Language · Computer Science 2024-06-25 Dongyang Li , Taolin Zhang , Jiali Deng , Longtao Huang , Chengyu Wang , Xiaofeng He , Hui Xue

Sufficient training data normally is required to train deeply learned models. However, due to the expensive manual process for labelling large number of images, the amount of available training data is always limited. To produce more data…

Computer Vision and Pattern Recognition · Computer Science 2018-12-26 Yan Huang , Jinsong Xu , Qiang Wu , Zhedong Zheng , Zhaoxiang Zhang , Jian Zhang

Automatic speech recognition (ASR) models rely on high-quality transcribed data for effective training. Generating pseudo-labels for large unlabeled audio datasets often relies on complex pipelines that combine multiple ASR outputs through…

Audio and Speech Processing · Electrical Eng. & Systems 2025-10-06 Jeena Prakash , Blessingh Kumar , Kadri Hacioglu , Bidisha Sharma , Sindhuja Gopalan , Malolan Chetlur , Shankar Venkatesan , Andreas Stolcke

Recent advance in Dense Retrieval (DR) techniques has significantly improved the effectiveness of first-stage retrieval. Trained with large-scale supervised data, DR models can encode queries and documents into a low-dimensional dense space…

Information Retrieval · Computer Science 2022-08-18 Jingtao Zhan , Qingyao Ai , Yiqun Liu , Jiaxin Mao , Xiaohui Xie , Min Zhang , Shaoping Ma

Semi-supervised learning algorithms reduce the high cost of acquiring labeled training data by using both labeled and unlabeled data during learning. Deep Convolutional Networks (DCNs) have achieved great success in supervised tasks and as…

Machine Learning · Statistics 2016-12-07 Tan Nguyen , Wanjia Liu , Ethan Perez , Richard G. Baraniuk , Ankit B. Patel

Speech Emotion Recognition (SER) in a single language has achieved remarkable results through deep learning approaches in the last decade. However, cross-lingual SER remains a challenge in real-world applications due to a great difference…

Audio and Speech Processing · Electrical Eng. & Systems 2021-10-08 Jin Li , Nan Yan , Lan Wang

Dense retrieval models using a transformer-based bi-encoder design have emerged as an active area of research. In this work, we focus on the task of monolingual retrieval in a variety of typologically diverse languages using one such…

Information Retrieval · Computer Science 2022-04-06 Xinyu Zhang , Kelechi Ogueji , Xueguang Ma , Jimmy Lin

Recently multi-lingual pre-trained language models (PLM) such as mBERT and XLM-R have achieved impressive strides in cross-lingual dense retrieval. Despite its successes, they are general-purpose PLM while the multilingual PLM tailored for…

Computation and Language · Computer Science 2025-09-08 Shunyu Zhang , Yaobo Liang , Ming Gong , Daxin Jiang , Nan Duan

Although unsupervised person re-identification (RE-ID) has drawn increasing research attentions due to its potential to address the scalability problem of supervised RE-ID models, it is very challenging to learn discriminative information…

Computer Vision and Pattern Recognition · Computer Science 2019-04-09 Hong-Xing Yu , Wei-Shi Zheng , Ancong Wu , Xiaowei Guo , Shaogang Gong , Jian-Huang Lai

The advancement of visual tracking has continuously been brought by deep learning models. Typically, supervised learning is employed to train these models with expensive labeled data. In order to reduce the workload of manual annotations…

Computer Vision and Pattern Recognition · Computer Science 2020-07-24 Ning Wang , Wengang Zhou , Yibing Song , Chao Ma , Wei Liu , Houqiang Li

We present Mr. TyDi, a multi-lingual benchmark dataset for mono-lingual retrieval in eleven typologically diverse languages, designed to evaluate ranking with learned dense representations. The goal of this resource is to spur research in…

Computation and Language · Computer Science 2021-11-09 Xinyu Zhang , Xueguang Ma , Peng Shi , Jimmy Lin

Automatic Speech Recognition (ASR) systems can be trained to achieve remarkable performance given large amounts of manually transcribed speech, but large labeled data sets can be difficult or expensive to acquire for all languages of…

Computation and Language · Computer Science 2022-03-22 Hanan Aldarmaki , Asad Ullah , Nazar Zaki

Recent advances in large language models (LLMs) have yielded impressive performance on various tasks, yet they often depend on high-quality feedback that can be costly. Self-refinement methods attempt to leverage LLMs' internal evaluation…

Computation and Language · Computer Science 2025-12-01 Hikaru Asano , Tadashi Kozuno , Yukino Baba

Language identification (LID) recognizes the language of a spoken utterance automatically. According to recent studies, LID models trained with an automatic speech recognition (ASR) task perform better than those trained with a LID task…

Audio and Speech Processing · Electrical Eng. & Systems 2023-04-17 Jinseok Park , Hyung Yong Kim , Jihwan Park , Byeong-Yeol Kim , Shukjae Choi , Yunkyu Lim

The recent success of large pre-trained language models (PLMs) heavily hinges on massive labeled data, which typically produces inferior performance in low-resource scenarios. To remedy this dilemma, we study self-training as one of the…

Machine Learning · Computer Science 2023-10-23 Jianing Wang , Qiushi Sun , Nuo Chen , Chengyu Wang , Jun Huang , Ming Gao , Xiang Li

Person re-identification (re-ID) aims at identifying the same persons' images across different cameras. However, domain diversities between different datasets pose an evident challenge for adapting the re-ID model trained on one dataset to…

Computer Vision and Pattern Recognition · Computer Science 2020-01-31 Yixiao Ge , Dapeng Chen , Hongsheng Li

This paper proposes a multilingual speech synthesis method which combines unsupervised phonetic representations (UPR) and supervised phonetic representations (SPR) to avoid reliance on the pronunciation dictionaries of target languages. In…

Audio and Speech Processing · Electrical Eng. & Systems 2022-06-03 Chang Liu , Zhen-Hua Ling , Ling-Hui Chen

Phrase-level dense retrieval has shown many appealing characteristics in downstream NLP tasks by leveraging the fine-grained information that phrases offer. In our work, we propose a new task formulation of dense retrieval, cross-lingual…

Computation and Language · Computer Science 2024-10-07 Huayang Li , Deng Cai , Zhi Qu , Qu Cui , Hidetaka Kamigaito , Lemao Liu , Taro Watanabe

We propose an unsupervised method to obtain cross-lingual embeddings without any parallel data or pre-trained word embeddings. The proposed model, which we call multilingual neural language models, takes sentences of multiple languages as…

Computation and Language · Computer Science 2018-09-10 Takashi Wada , Tomoharu Iwata