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Dense retrieval requires high-quality text sequence embeddings to support effective search in the representation space. Autoencoder-based language models are appealing in dense retrieval as they train the encoder to output high-quality…

机器学习 · 计算机科学 2021-09-17 Shuqi Lu , Di He , Chenyan Xiong , Guolin Ke , Waleed Malik , Zhicheng Dou , Paul Bennett , Tieyan Liu , Arnold Overwijk

Conventionally, autoencoders are unsupervised representation learning tools. In this work, we propose a novel discriminative autoencoder. Use of supervised discriminative learning ensures that the learned representation is robust to…

计算机视觉与模式识别 · 计算机科学 2019-12-30 Anupriya Gogna , Angshul Majumdar

Over the past few years, vision transformers (ViTs) have consistently demonstrated remarkable performance across various visual recognition tasks. However, attempts to enhance their robustness have yielded limited success, mainly focusing…

计算机视觉与模式识别 · 计算机科学 2024-10-01 Nick Nikzad , Yi Liao , Yongsheng Gao , Jun Zhou

In the dataset of image captioning, each image is aligned with several descriptions. Despite the fact that the quality of these descriptions varies, existing captioning models treat them equally in the training process. In this paper, we…

计算机视觉与模式识别 · 计算机科学 2023-03-10 Zhangzi Zhu , Hong Qu

In this paper, we present a denoising sequence-to-sequence (seq2seq) autoencoder via contrastive learning for abstractive text summarization. Our model adopts a standard Transformer-based architecture with a multi-layer bi-directional…

计算与语言 · 计算机科学 2021-08-30 Chujie Zheng , Kunpeng Zhang , Harry Jiannan Wang , Ling Fan , Zhe Wang

We propose SC-Captioner, a reinforcement learning framework that enables the self-correcting capability of image caption models. Our crucial technique lies in the design of the reward function to incentivize accurate caption corrections.…

计算机视觉与模式识别 · 计算机科学 2025-08-11 Lin Zhang , Xianfang Zeng , Kangcong Li , Gang Yu , Tao Chen

By incorporating additional contextual information, deep biasing methods have emerged as a promising solution for speech recognition of personalized words. However, for real-world voice assistants, always biasing on such personalized words…

声音 · 计算机科学 2023-08-16 Tianyi Xu , Zhanheng Yang , Kaixun Huang , Pengcheng Guo , Ao Zhang , Biao Li , Changru Chen , Chao Li , Lei Xie

Latent variable models like the Variational Auto-Encoder (VAE) are commonly used to learn representations of images. However, for downstream tasks like semantic classification, the representations learned by VAE are less competitive than…

机器学习 · 统计学 2022-05-31 Mingtian Zhang , Tim Z. Xiao , Brooks Paige , David Barber

Vision transformers have established a precedent of patchifying images into uniformly-sized chunks before processing. We hypothesize that this design choice may limit models in learning comprehensive and compositional representations from…

计算机视觉与模式识别 · 计算机科学 2025-05-20 Neha Kalibhat , Priyatham Kattakinda , Sumit Nawathe , Arman Zarei , Nikita Seleznev , Samuel Sharpe , Senthil Kumar , Soheil Feizi

Visuomotor policies often suffer from perceptual challenges, where visual differences between training and evaluation environments degrade policy performance. Policies relying on state estimations, like 6D pose, require task-specific…

机器人学 · 计算机科学 2025-10-07 Yunchu Zhang , Shubham Mittal , Zhengyu Zhang , Liyiming Ke , Siddhartha Srinivasa , Abhishek Gupta

Task specific fine-tuning of a pre-trained neural language model using a custom softmax output layer is the de facto approach of late when dealing with document classification problems. This technique is not adequate when labeled examples…

计算与语言 · 计算机科学 2020-10-27 Natraj Raman , Armineh Nourbakhsh , Sameena Shah , Manuela Veloso

While the neural transducer is popular for online speech recognition, simultaneous speech translation (SST) requires both streaming and re-ordering capabilities. This paper presents the LS-Transducer-SST, a label-synchronous neural…

计算与语言 · 计算机科学 2024-06-10 Keqi Deng , Philip C. Woodland

Visual attention has been successfully applied in structural prediction tasks such as visual captioning and question answering. Existing visual attention models are generally spatial, i.e., the attention is modeled as spatial probabilities…

计算机视觉与模式识别 · 计算机科学 2017-04-13 Long Chen , Hanwang Zhang , Jun Xiao , Liqiang Nie , Jian Shao , Wei Liu , Tat-Seng Chua

Computerized adaptive tests (CATs) play a crucial role in educational assessment and diagnostic screening in behavioral health. Unlike traditional linear tests that administer a fixed set of pre-assembled items, CATs adaptively tailor the…

统计方法学 · 统计学 2026-05-11 Jiguang Li , Robert Gibbons , Veronika Rockova

Adversarial training (AT) as a regularization method has proved its effectiveness in various tasks, such as image classification and text classification. Though there are successful applications of AT in many tasks of natural language…

计算与语言 · 计算机科学 2019-11-12 Ziqing Yang , Yiming Cui , Wanxiang Che , Ting Liu , Shijin Wang , Guoping Hu

One of the central goals of causal machine learning is the accurate estimation of heterogeneous treatment effects from observational data. In recent years, meta-learning has emerged as a flexible, model-agnostic paradigm for estimating…

人工智能 · 计算机科学 2024-11-14 Henri Arno , Paloma Rabaey , Thomas Demeester

Autoencoders are techniques for data representation learning based on artificial neural networks. Differently to other feature learning methods which may be focused on finding specific transformations of the feature space, they can be…

机器学习 · 计算机科学 2020-05-12 David Charte , Francisco Charte , María J. del Jesus , Francisco Herrera

Computer vision tasks such as object detection and semantic/instance segmentation rely on the painstaking annotation of large training datasets. In this paper, we propose LocTex that takes advantage of the low-cost localized textual…

计算机视觉与模式识别 · 计算机科学 2021-08-27 Zhijian Liu , Simon Stent , Jie Li , John Gideon , Song Han

The Recurrent Neural Network-Transducer (RNN-T) is widely adopted in end-to-end (E2E) automatic speech recognition (ASR) tasks but depends heavily on large-scale, high-quality annotated data, which are often costly and difficult to obtain.…

This paper investigates efficient methods for utilizing text-only data to improve speech recognition, focusing on encoder-dominated models that facilitate faster recognition. We provide a comprehensive comparison of techniques to integrate…

计算与语言 · 计算机科学 2026-04-30 Albert Zeyer , Tim Posielek , Ralf Schlüter , Hermann Ney