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In this paper, we investigated a speech augmentation based unsupervised learning approach for keyword spotting (KWS) task. KWS is a useful speech application, yet also heavily depends on the labeled data. We designed a CNN-Attention…

声音 · 计算机科学 2022-05-31 Jian Luo , Jianzong Wang , Ning Cheng , Haobin Tang , Jing Xiao

Supervised ranking methods based on bi-encoder or cross-encoder architectures have shown success in multi-stage text ranking tasks, but they require large amounts of relevance judgments as training data. In this work, we propose Listwise…

信息检索 · 计算机科学 2023-05-04 Xueguang Ma , Xinyu Zhang , Ronak Pradeep , Jimmy Lin

Self-supervised learning aims to learn representations from the data itself without explicit manual supervision. Existing efforts ignore a crucial aspect of self-supervised learning - the ability to scale to large amount of data because…

计算机视觉与模式识别 · 计算机科学 2019-06-07 Priya Goyal , Dhruv Mahajan , Abhinav Gupta , Ishan Misra

The ability to generalize learned representations across significantly different visual domains, such as between real photos, clipart, paintings, and sketches, is a fundamental capacity of the human visual system. In this paper, different…

In multitask retrieval, a single retriever is trained to retrieve relevant contexts for multiple tasks. Despite its practical appeal, naive multitask retrieval lags behind task-specific retrieval in which a separate retriever is trained for…

计算与语言 · 计算机科学 2023-07-04 Wenzheng Zhang , Chenyan Xiong , Karl Stratos , Arnold Overwijk

The recent history of machine learning research has taught us that machine learning methods can be most effective when they are provided with very large, high-capacity models, and trained on very large and diverse datasets. This has spurred…

机器学习 · 计算机科学 2021-10-26 Sergey Levine

Multi--task learning seeks to improve the generalization error by leveraging the common information shared by multiple related tasks. One challenge in multi--task learning is identifying formulations capable of uncovering the common…

机器学习 · 计算机科学 2026-03-06 Ayed M. Alrashdi , Oussama Dhifallah , Houssem Sifaou

Recently the emergence of novel presentation attacks has drawn increasing attention to face anti-spoofing. However, existing methods tend to memorize data patterns from the training set, resulting in poor generalization to unknown attack…

计算机视觉与模式识别 · 计算机科学 2025-06-30 Fangling Jiang , Qi Li , Weining Wang , Gang Wang , Bing Liu , Zhenan Sun

Multi-task learning (MTL) is a methodology that aims to improve the general performance of estimation and prediction by sharing common information among related tasks. In the MTL, there are several assumptions for the relationships and…

统计方法学 · 统计学 2023-04-27 Akira Okazaki , Shuichi Kawano

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…

计算与语言 · 计算机科学 2018-11-02 Pengcheng Yang , Fuli Luo , Shuangzhi Wu , Jingjing Xu , Dongdong Zhang , Xu Sun

Enabling robots to learn novel visuomotor skills in a data-efficient manner remains an unsolved problem with myriad challenges. A popular paradigm for tackling this problem is through leveraging large unlabeled datasets that have many…

机器人学 · 计算机科学 2023-05-16 Maximilian Du , Suraj Nair , Dorsa Sadigh , Chelsea Finn

An incremental version of the ELMVIS+ method is proposed in this paper. It iteratively selects a few best fitting data samples from a large pool, and adds them to the model. The method keeps high speed of ELMVIS+ while allowing for much…

Task generalization has been a long standing challenge in Natural Language Processing (NLP). Recent research attempts to improve the task generalization ability of pre-trained language models by mapping NLP tasks into human-readable…

计算与语言 · 计算机科学 2022-08-08 Wanjun Zhong , Yifan Gao , Ning Ding , Zhiyuan Liu , Ming Zhou , Jiahai Wang , Jian Yin , Nan Duan

Self-supervised pre-training of transformer models has revolutionized NLP applications. Such pre-training with language modeling objectives provides a useful initial point for parameters that generalize well to new tasks with fine-tuning.…

计算与语言 · 计算机科学 2020-11-17 Trapit Bansal , Rishikesh Jha , Tsendsuren Munkhdalai , Andrew McCallum

We propose an unsupervised hashing method which aims to produce binary codes that preserve the ranking induced by a real-valued representation. Such compact hash codes enable the complete elimination of real-valued feature storage and allow…

计算机视觉与模式识别 · 计算机科学 2019-03-06 Svebor Karaman , Xudong Lin , Xuefeng Hu , Shih-Fu Chang

Cross-lingual transfer of word embeddings aims to establish the semantic mappings among words in different languages by learning the transformation functions over the corresponding word embedding spaces. Successfully solving this problem…

计算与语言 · 计算机科学 2018-09-12 Ruochen Xu , Yiming Yang , Naoki Otani , Yuexin Wu

Although the performance of person re-identification (Re-ID) has been much improved by using sophisticated training methods and large-scale labelled datasets, many existing methods make the impractical assumption that information of a…

计算机视觉与模式识别 · 计算机科学 2019-10-14 Masato Tamura , Tomokazu Murakami

One technique to improve the retrieval effectiveness of a search engine is to expand documents with terms that are related or representative of the documents' content.From the perspective of a question answering system, this might comprise…

信息检索 · 计算机科学 2019-09-26 Rodrigo Nogueira , Wei Yang , Jimmy Lin , Kyunghyun Cho

Large language models (LLMs) are probabilistic in nature and perform more reliably when augmented with external information. As complex queries often require multi-step reasoning over the retrieved information, with no clear or…

信息检索 · 计算机科学 2026-04-10 Roxana Petcu , Evangelos Kanoulas , Maarten de Rijke

The field of Natural Language Processing has experienced a dramatic leap in capabilities with the recent introduction of huge Language Models. Despite this success, natural language problems that involve several compounded steps are still…

计算与语言 · 计算机科学 2023-02-16 Noam Wies , Yoav Levine , Amnon Shashua