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For many machine learning applications, a common input representation is a spectrogram. The underlying representation for a spectrogram is a short time Fourier transform (STFT) which gives complex values. The spectrogram uses the magnitude…

音频与语音处理 · 电气工程与系统科学 2023-02-28 Les Atlas , Nicholas Rasmussen , Felix Schwock , Mert Pilanci

Micro-expression recognition (MER) draws intensive research interest as micro-expressions (MEs) can infer genuine emotions. Prior information can guide the model to learn discriminative ME features effectively. However, most works focus on…

计算机视觉与模式识别 · 计算机科学 2023-03-06 Jinsheng Wei , Haoyu Chen , Guanming Lu , Jingjie Yan , Yue Xie , Guoying Zhao

This study introduces a novel activation function, characterized by a dynamic slope that adjusts throughout the training process, aimed at enhancing adaptability and performance in deep neural networks for computer vision tasks. The…

计算机视觉与模式识别 · 计算机科学 2024-08-20 Archisman Chakraborti , Bidyut B Chaudhuri

Multimodal Emotion Recognition in Conversation (MERC) aims to enhance emotion understanding by integrating complementary cues from text, audio, and visual modalities. Existing MERC approaches predominantly focus on cross-modal shared…

多媒体 · 计算机科学 2025-12-16 Xinyi Che , Wenbo Wang , Yuanbo Hou , Mingjie Xie , Qijun Zhao , Jian Guan

In this work, we develop a novel input feature selection framework for ReLU-based deep neural networks (DNNs), which builds upon a mixed-integer optimization approach. While the method is generally applicable to various classification…

最优化与控制 · 数学 2023-02-22 Shudian Zhao , Calvin Tsay , Jan Kronqvist

Activation function is a pivotal component of deep learning, facilitating the extraction of intricate data patterns. While classical activation functions like ReLU and its variants are extensively utilized, their static nature and…

机器学习 · 计算机科学 2025-11-04 Barathi Subramanian , Rathinaraja Jeyaraj , Rakhmonov Akhrorjon Akhmadjon Ugli

Deep learning training training algorithms are a huge success in recent years in many fields including speech, text,image video etc. Deeper and deeper layers are proposed with huge success with resnet structures having around 152 layers.…

机器学习 · 计算机科学 2024-02-20 Chinmay Rane , Kanishka Tyagi , Michael Manry

We can compress a rectifier network while exactly preserving its underlying functionality with respect to a given input domain if some of its neurons are stable. However, current approaches to determine the stability of neurons with…

机器学习 · 计算机科学 2021-10-29 Thiago Serra , Xin Yu , Abhinav Kumar , Srikumar Ramalingam

Micro-expression recognition (MER), a critical subfield of affective computing, presents greater challenges than macro-expression recognition due to its brief duration and low intensity. While incorporating prior knowledge has been shown to…

计算机视觉与模式识别 · 计算机科学 2025-06-12 Chuang Ma , Shaokai Zhao , Dongdong Zhou , Yu Pei , Zhiguo Luo , Liang Xie , Ye Yan , Erwei Yin

We present AURA-net, a convolutional neural network (CNN) for the segmentation of phase-contrast microscopy images. AURA-net uses transfer learning to accelerate training and Attention mechanisms to help the network focus on relevant image…

图像与视频处理 · 电气工程与系统科学 2021-02-03 Ethan Cohen , Virginie Uhlmann

We propose a new notion of `non-linearity' of a network layer with respect to an input batch that is based on its proximity to a linear system, which is reflected in the non-negative rank of the activation matrix. We measure this…

机器学习 · 计算机科学 2018-10-09 Edo Collins , Siavash Arjomand Bigdeli , Sabine Süsstrunk

Deep neural network with rectified linear units (ReLU) is getting more and more popular recently. However, the derivatives of the function represented by a ReLU network are not continuous, which limit the usage of ReLU network to situations…

机器学习 · 计算机科学 2020-12-03 Bo Li , Shanshan Tang , Haijun Yu

Given a degraded input image, image restoration aims to recover the missing high-quality image content. Numerous applications demand effective image restoration, e.g., computational photography, surveillance, autonomous vehicles, and remote…

图像与视频处理 · 电气工程与系统科学 2022-05-04 Syed Waqas Zamir , Aditya Arora , Salman Khan , Munawar Hayat , Fahad Shahbaz Khan , Ming-Hsuan Yang , Ling Shao

A novel algorithm for video lane detection is proposed in this paper. First, we extract a feature map for a current frame and detect a latent mask for obstacles occluding lanes. Then, we enhance the feature map by developing an…

计算机视觉与模式识别 · 计算机科学 2024-08-15 Dongkwon Jin , Chang-Su Kim

Facial expression analysis in the wild is challenging when the facial image is with low resolution or partial occlusion. Considering the correlations among different facial local regions under different facial expressions, this paper…

计算机视觉与模式识别 · 计算机科学 2020-01-03 Zhilei Liu , Le Li , Yunpeng Wu , Cuicui Zhang

CTR prediction has been widely used in the real world. Many methods model feature interaction to improve their performance. However, most methods only learn a fixed representation for each feature without considering the varying importance…

信息检索 · 计算机科学 2022-12-02 Fangye Wang , Yingxu Wang , Dongsheng Li , Hansu Gu , Tun Lu , Peng Zhang , Ning Gu

Recently, the recognition task of spontaneous facial micro-expressions has attracted much attention with its various real-world applications. Plenty of handcrafted or learned features have been employed for a variety of classifiers and…

计算机视觉与模式识别 · 计算机科学 2019-01-16 Zhaoqiang Xia , Xiaopeng Hong , Xingyu Gao , Xiaoyi Feng , Guoying Zhao

We draw connections between simple neural networks and under-determined linear systems to comprehensively explore several interesting theoretical questions in the study of neural networks. First, we emphatically show that it is unsurprising…

数值分析 · 数学 2020-11-02 Austin R. Benson , Anil Damle , Alex Townsend

We study the loss surface of neural networks equipped with a hinge loss criterion and ReLU or leaky ReLU nonlinearities. Any such network defines a piecewise multilinear form in parameter space. By appealing to harmonic analysis we show…

机器学习 · 计算机科学 2018-07-24 Thomas Laurent , James von Brecht

In many domains, including online education, healthcare, security, and human-computer interaction, facial emotion recognition (FER) is essential. Real-world FER is still difficult despite its significance because of some factors such as…

计算机视觉与模式识别 · 计算机科学 2025-10-28 Deeptimaan Banerjee , Prateek Gothwal , Ashis Kumer Biswas