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We address the channel estimation (CE) problem in reconfigurable intelligent surface (RIS) aided orthogonal frequency-division multiplexing (OFDM) systems by proposing a dual-structure and multi-dimensional transformations (DS-MDT)…

Signal Processing · Electrical Eng. & Systems 2026-02-16 Linlin Mo , Yi Song , Fabio Saggese , Xinhua Lu , Zhongyong Wang , Petar Popovski

This paper explores semi-supervised anomaly detection, a more practical setting for anomaly detection where a small additional set of labeled samples are provided. We propose a new KL-divergence based objective function for semi-supervised…

Machine Learning · Computer Science 2021-10-22 Chaoqin Huang , Fei Ye , Peisen Zhao , Ya Zhang , Yan-Feng Wang , Qi Tian

In the short block length regime, pre-transformed polar codes together with successive cancellation list (SCL) decoding possess excellent error correction capabilities. However, in practice, the list size is limited due to the suboptimal…

Information Theory · Computer Science 2025-04-25 Henning Lulei , Jonathan Mandelbaum , Marvin Rübenacke , Holger Jäkel , Stephan ten Brink , Laurent Schmalen

Steered-Mixtures-of-Experts (SMoE) models provide sparse, edge-aware representations, applicable to many use-cases in image processing. This includes denoising, super-resolution and compression of 2D- and higher dimensional pixel data.…

Image and Video Processing · Electrical Eng. & Systems 2022-07-26 Elvira Fleig , Jonas Geistert , Erik Bochinski , Rolf Jongebloed , Thomas Sikora

We study the multi-user Bayesian persuasion game between one encoder and two decoders, where the first decoder is better informed than the second decoder. We consider two perfect links, one to the first decoder only, and the other to both…

Information Theory · Computer Science 2021-09-09 Rony Bou Rouphael , Mael Le Treust

In this paper, we consider the problem of improving the inference latency of language model-based dense retrieval systems by introducing structural compression and model size asymmetry between the context and query encoders. First, we…

Computation and Language · Computer Science 2023-06-05 Daniel Campos , Alessandro Magnani , ChengXiang Zhai

Encoder-decoder based Sequence to Sequence learning (S2S) has made remarkable progress in recent years. Different network architectures have been used in the encoder/decoder. Among them, Convolutional Neural Networks (CNN) and Self…

Computation and Language · Computer Science 2018-07-05 Kaitao Song , Xu Tan , Di He , Jianfeng Lu , Tao Qin , Tie-Yan Liu

How to improve generative modeling by better exploiting spatial regularities and coherence in images? We introduce a novel neural network for building image generators (decoders) and apply it to variational autoencoders (VAEs). In our…

Computer Vision and Pattern Recognition · Computer Science 2021-03-17 Đorđe Miladinović , Aleksandar Stanić , Stefan Bauer , Jürgen Schmidhuber , Joachim M. Buhmann

Polar codes have become one of the most favorable capacity achieving error correction codes (ECC) along with their simple encoding method. However, among the very few prior successive cancellation (SC) polar decoder designs, the required…

Hardware Architecture · Computer Science 2011-11-04 Chuan Zhang , Bo Yuan , Keshab K. Parhi

Auditory Attention Decoding (AAD) algorithms play a crucial role in isolating desired sound sources within challenging acoustic environments directly from brain activity. Although recent research has shown promise in AAD using shallow…

Sound · Computer Science 2023-11-08 Karan Thakkar , Jiarui Hai , Mounya Elhilali

Legal question answering (QA) has attracted increasing attention from people seeking legal advice, which aims to retrieve the most applicable answers from a large-scale database of question-answer pairs. Previous methods mainly use a…

Computation and Language · Computer Science 2024-12-30 Shiwen Ni , Hao Cheng , Min Yang

This paper explores a new framework for lossy image encryption and decryption using a simple shallow encoder neural network E for encryption, and a complex deep decoder neural network D for decryption. E is kept simple so that encoding can…

Machine Learning · Computer Science 2020-05-19 Chirag Gupta

Open-domain extractive question answering works well on textual data by first retrieving candidate texts and then extracting the answer from those candidates. However, some questions cannot be answered by text alone but require information…

Computation and Language · Computer Science 2021-10-20 Bogdan Kostić , Julian Risch , Timo Möller

State-of-the-art neural models typically encode document-query pairs using cross-attention for re-ranking. To this end, models generally utilize an encoder-only (like BERT) paradigm or an encoder-decoder (like T5) approach. These paradigms,…

Computation and Language · Computer Science 2022-04-26 Kai Hui , Honglei Zhuang , Tao Chen , Zhen Qin , Jing Lu , Dara Bahri , Ji Ma , Jai Prakash Gupta , Cicero Nogueira dos Santos , Yi Tay , Don Metzler

In this paper, we propose a single multi-task learning framework to perform End-to-End (E2E) speech recognition (ASR) and accent recognition (AR) simultaneously. The proposed framework is not only more compact but can also yield comparable…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-16 Jicheng Zhang , Yizhou Peng , Pham Van Tung , Haihua Xu , Hao Huang , Eng Siong Chng

Separating different speaker properties from a multi-speaker environment is challenging. Instead of separating a two-speaker signal in signal space like speech source separation, a speaker embedding de-mixing approach is proposed. The…

Sound · Computer Science 2021-02-08 Yanpei Shi , Thomas Hain

Based on analyzing the character of cascaded decoder architecture commonly adopted in existing DETR-like models, this paper proposes a new decoder architecture. The cascaded decoder architecture constrains object queries to update in the…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Zhixiong Nan , Xianghong Li , Jifeng Dai , Tao Xiang

We present the first empirical evaluation of techniques for encoding distributions of quantitative edge values within adjacency matrices. In many real-world networks, edges represent not a single value but a set of measurements. While…

Human-Computer Interaction · Computer Science 2026-04-17 Jorge Acosta-Hernández , Alexander Lex , Tingying He

Dual encoder (DE) models, where a pair of matching query and document are embedded into similar vector representations, are widely used in information retrieval due to their simplicity and scalability. However, the Euclidean geometry of the…

Information Retrieval · Computer Science 2025-09-23 Chong You , Rajesh Jayaram , Ananda Theertha Suresh , Robin Nittka , Felix Yu , Sanjiv Kumar

A two-receiver quantum dense coding scheme and an $N$-receiver quantum dense coding scheme, in the case of non-symmetric Hilbert spaces of the particles of the quantum channel, are investigated in this paper. A sender can send his messages…

Quantum Physics · Physics 2009-11-13 Chang-Bao Fu , Shou Zhang , Ke Li , Kyu-Hwang Yeon , Chung-In Um