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We find that current text embedding models produce outputs with a consistent bias, i.e., each embedding vector $e$ can be decomposed as $\tilde{e} + \mu$, where $\mu$ is almost identical across all sentences. We propose a plug-and-play,…

计算与语言 · 计算机科学 2025-11-17 Xingyu Ren , Youran Sun , Haoyu Liang

Attention is an effective mechanism to improve the deep model capability. Squeeze-and-Excite (SE) introduces a light-weight attention branch to enhance the network's representational power. The attention branch is gated using the Sigmoid…

计算机视觉与模式识别 · 计算机科学 2021-03-25 Chunjie Luo , Jianfeng Zhan , Tianshu Hao , Lei Wang , Wanling Gao

The sigmoid gate in mixture-of-experts (MoE) models has been empirically shown to outperform the softmax gate across several tasks, ranging from approximating feed-forward networks to language modeling. Additionally, recent efforts have…

机器学习 · 统计学 2026-02-03 Tuan Minh Pham , Thinh Cao , Viet Nguyen , Huy Nguyen , Nhat Ho , Alessandro Rinaldo

In this paper we study how the choice of loss functions of non-convex optimization problems affects their robustness and optimization landscape, through the study of noisy matrix sensing. In traditional regression tasks, mean squared error…

机器学习 · 计算机科学 2026-01-06 Xinyuan Song , Ziye Ma

Remote sensing change detection (RSCD) is a complex task, where changes often appear at different scales and orientations. Convolutional neural networks (CNNs) are good at capturing local spatial patterns but cannot model global semantics…

计算机视觉与模式识别 · 计算机科学 2026-01-19 Humza Naveed , Xina Zeng , Mitch Bryson , Nagita Mehrseresht

We first conceive a novel transmission protocol for a multi-relay multiple-input--multiple-output orthogonal frequency-division multiple-access (MIMO-OFDMA) cellular network based on joint transmit and receive beamforming. We then address…

信息论 · 计算机科学 2015-03-04 Kent Tsz Kan Cheung , Shaoshi Yang , Lajos Hanzo

Secured opportunistic Medium Access Control (MAC) and complexity reduction in channel estimation are proposed in the Cross layer design Cognitive Radio Networks deploying the secured dynamic channel allocation from the endorsed channel…

网络与互联网体系结构 · 计算机科学 2012-03-19 Niraj Shakhakarmi

When tasks change over time, meta-transfer learning seeks to improve the efficiency of learning a new task via both meta-learning and transfer-learning. While the standard attention has been effective in a variety of settings, we question…

机器学习 · 计算机科学 2020-06-30 Jaesik Yoon , Gautam Singh , Sungjin Ahn

Data imbalance exists ubiquitously in real-world visual regressions, e.g., age estimation and pose estimation, hurting the model's generalizability and fairness. Thus, imbalanced regression gains increasing research attention recently.…

计算机视觉与模式识别 · 计算机科学 2022-03-31 Jiawei Ren , Mingyuan Zhang , Cunjun Yu , Ziwei Liu

Effective sentence embeddings that capture semantic nuances and generalize well across diverse contexts are crucial for natural language processing tasks. We address this challenge by applying SimCSE (Simple Contrastive Learning of Sentence…

计算与语言 · 计算机科学 2025-01-24 Yumeng Wang , Ziran Zhou , Junjin Wang

We study model recovery for data classification, where the training labels are generated from a one-hidden-layer neural network with sigmoid activations, also known as a single-layer feedforward network, and the goal is to recover the…

机器学习 · 统计学 2020-05-07 Haoyu Fu , Yuejie Chi , Yingbin Liang

Deep classifiers have achieved great success in visual recognition. However, real-world data is long-tailed by nature, leading to the mismatch between training and testing distributions. In this report, we introduce Balanced Activation…

机器学习 · 计算机科学 2020-08-26 Jiawei Ren , Cunjun Yu , Zhongang Cai , Haiyu Zhao

We study the influence of different activation functions in the output layer of deep neural network models for soft and hard label prediction in the learning with disagreement task. In this task, the goal is to quantify the amount of…

计算与语言 · 计算机科学 2024-01-05 Peyman Hosseini , Mehran Hosseini , Sana Sabah Al-Azzawi , Marcus Liwicki , Ignacio Castro , Matthew Purver

Objective: Sparse Bayesian learning provides an effective scheme to solve the high-dimensional problem in brain signal decoding. However, traditional assumptions regarding data distributions such as Gaussian and binomial are potentially…

信号处理 · 电气工程与系统科学 2025-08-19 Yuanhao Li , Badong Chen , Wenjun Bai , Yasuharu Koike , Okito Yamashita

Residual networks, which use a residual unit to supplement the identity mappings, enable very deep convolutional architecture to operate well, however, the residual architecture has been proved to be diverse and redundant, which may leads…

计算机视觉与模式识别 · 计算机科学 2018-12-27 Yang Hu , Guihua Wen , Mingnan Luo , Dan Dai , Jiajiong Ma , Zhiwen Yu

At the core of the popular Transformer architecture is the self-attention mechanism, which dynamically assigns softmax weights to each input token so that the model can focus on the most salient information. However, the softmax structure…

机器学习 · 计算机科学 2025-05-27 Fanqi Yan , Huy Nguyen , Pedram Akbarian , Nhat Ho , Alessandro Rinaldo

Contrastive learning has been studied for improving the performance of learning sentence embeddings. The current state-of-the-art method is the SimCSE, which takes dropout as the data augmentation method and feeds a pre-trained transformer…

计算与语言 · 计算机科学 2021-11-25 Junlei Zhang , Zhenzhong lan

In neural networks, the loss function represents the core of the learning process that leads the optimizer to an approximation of the optimal convergence error. Convolutional neural networks (CNN) use the loss function as a supervisory…

计算机视觉与模式识别 · 计算机科学 2020-09-30 Riccardo La Grassa , Ignazio Gallo , Nicola Landro

In sequence prediction tasks like neural machine translation, training with cross-entropy loss often leads to models that overgeneralize and plunge into local optima. In this paper, we propose an extended loss function called \emph{dual…

计算与语言 · 计算机科学 2021-04-20 Zuchao Li , Hai Zhao , Yingting Wu , Fengshun Xiao , Shu Jiang

Mutual exclusion (ME) is one of the most commonly used techniques to handle conflicts in concurrent systems. Traditionally, mutual exclusion algorithms have been designed under the assumption that a process does not fail while…

分布式、并行与集群计算 · 计算机科学 2020-08-04 Sahil Dhoked , Neeraj Mittal
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