Search Results for author: Caili Guo

Found 25 papers, 1 papers with code

Uncertainty, Calibration, and Membership Inference Attacks: An Information-Theoretic Perspective

no code implementations16 Feb 2024 Meiyi Zhu, Caili Guo, Chunyan Feng, Osvaldo Simeone

We derive bounds on the advantage of an MIA adversary with the aim of offering insights into the impact of uncertainty and calibration on the effectiveness of MIAs.

Conformal Prediction Inference Attack +1

OFDM-Based Digital Semantic Communication with Importance Awareness

no code implementations4 Jan 2024 Chuanhong Liu, Caili Guo, Yang Yang, Wanli Ni, Tony Q. S. Quek

Based on semantic importance, we formulate a sub-carrier and bit allocation problem to maximize communication performance.

Boundary-Aware Proposal Generation Method for Temporal Action Localization

no code implementations25 Sep 2023 Hao Zhang, Chunyan Feng, Jiahui Yang, Zheng Li, Caili Guo

More importantly, few works consider the background frames that are similar to action frames in pixels but dissimilar in semantics, which also leads to inaccurate temporal boundaries.

Action Recognition Contrastive Learning +1

Federated Inference with Reliable Uncertainty Quantification over Wireless Channels via Conformal Prediction

no code implementations8 Aug 2023 Meiyi Zhu, Matteo Zecchin, Sangwoo Park, Caili Guo, Chunyan Feng, Osvaldo Simeone

Recent work has introduced federated conformal prediction (CP), which leverages devices-to-server communication to improve the reliability of the server's decision.

Conformal Prediction Uncertainty Quantification

Integrating Listwise Ranking into Pairwise-based Image-Text Retrieval

1 code implementation26 May 2023 Zheng Li, Caili Guo, Xin Wang, Zerun Feng, Yanjun Wang

Given a query caption, the goal is to rank candidate images by relevance, from large to small.

Retrieval Text Retrieval

Selectively Hard Negative Mining for Alleviating Gradient Vanishing in Image-Text Matching

no code implementations1 Mar 2023 Zheng Li, Caili Guo, Xin Wang, Zerun Feng, Zhongtian Du

To alleviate the gradient vanishing problem, we propose a Selectively Hard Negative Mining (SelHN) strategy, which chooses whether to mine hard negative samples according to the gradient vanishing condition.

Image-text matching Text Matching

Deep Joint Source-Channel Coding for Wireless Image Transmission with Semantic Importance

no code implementations5 Feb 2023 Qizheng Sun, Caili Guo, Yang Yang, Jiujiu Chen, Rui Tang, Chuanhong Liu

Specifically, we first propose semantic importance weight calculation method, which is based on the gradient of intelligent task's perception results with respect to the features.

Information Bottleneck-Inspired Type Based Multiple Access for Remote Estimation in IoT Systems

no code implementations19 Dec 2022 Meiyi Zhu, Chunyan Feng, Caili Guo, Nan Jiang, Osvaldo Simeone

Type-based multiple access (TBMA) is a semantics-aware multiple access protocol for remote inference.

Image-Text Retrieval with Binary and Continuous Label Supervision

no code implementations20 Oct 2022 Zheng Li, Caili Guo, Zerun Feng, Jenq-Neng Hwang, Ying Jin, Yufeng Zhang

Such a binary indicator covers only a limited subset of image-text semantic relations, which is insufficient to represent relevance degrees between images and texts described by continuous labels such as image captions.

Image Captioning Retrieval +2

Unified Loss of Pair Similarity Optimization for Vision-Language Retrieval

no code implementations28 Sep 2022 Zheng Li, Caili Guo, Xin Wang, Zerun Feng, Jenq-Neng Hwang, Zhongtian Du

More specifically, Triplet loss with Hard Negative mining (Triplet-HN), which is widely used in existing retrieval models to improve the discriminative ability, is easy to fall into local minima in training.

Contrastive Learning Retrieval +2

Deep Joint Source-Channel Coding Based on Semantics of Pixels

no code implementations24 Aug 2022 Qizheng Sun, Caili Guo, Yang Yang, Jiujiu Chen, Rui Tang, Chuanhong Liu

The semantic information of the image for intelligent tasks is hidden behind the pixels, and slight changes in the pixels will affect the performance of intelligent tasks.

Adaptable Semantic Compression and Resource Allocation for Task-Oriented Communications

no code implementations19 Apr 2022 Chuanhong Liu, Caili Guo, Yang Yang, Nan Jiang

To solve the problem, both compression ratio and resource allocation are optimized for the task-oriented communication system to maximize the success probability of tasks.

Positioning Using Visible Light Communications: A Perspective Arcs Approach

no code implementations18 Apr 2022 Zhiyu Zhu, Caili Guo, Rongzhen Bao, Mingzhe Chen, Walid Saad, Yang Yang

In this paper, the arc feature of the circular luminaire and the coordinate information obtained via visible light communication (VLC) are jointly used for VLC-enabled indoor positioning, and a novel perspective arcs approach is proposed.

Adaptive Information Bottleneck Guided Joint Source and Channel Coding for Image Transmission

no code implementations12 Mar 2022 Lunan Sun, Yang Yang, Mingzhe Chen, Caili Guo, Walid Saad, H. Vincent Poor

In particular, a new IB objective for image transmission is proposed so as to minimize the distortion and the transmission rate.

Image Reconstruction

Semantic-assisted image compression

no code implementations29 Jan 2022 Qizheng Sun, Caili Guo, Yang Yang, Jiujiu Chen, Xijun Xue

Experimental results show that the proposed SAIC method can retain more semantic-level information and achieve better performance of downstream AI tasks compared to the traditional deep learning-based method and the advanced perceptual method at the same compression ratio.

Image Compression

Bandwidth and Power Allocation for Task-Oriented SemanticCommunication

no code implementations26 Jan 2022 Chuanhong Liu, Caili Guo, Yang Yang, Jiujiu Chen

The first subproblem is a compression ratio optimization problem with a given resource allocation scheme, which is solved by a enumeration algorithm.

Jointly Learning Agent and Lane Information for Multimodal Trajectory Prediction

no code implementations26 Nov 2021 Jie Wang, Caili Guo, Minan Guo, Jiujiu Chen

JAL-MTP use a Social to Lane (S2L) module to jointly represent the static lane and the dynamic motion of the neighboring agents as instance-level lane, a Recurrent Lane Attention (RLA) mechanism for utilizing the instance-level lanes to predict the map-adaptive future trajectories and two selectors to identify the typical and reasonable trajectories.

Autonomous Vehicles Trajectory Prediction

Semantic Communications With AI Tasks

no code implementations29 Sep 2021 Yang Yang, Caili Guo, Fangfang Liu, Chuanhong Liu, Lunan Sun, Qizheng Sun, Jiujiu Chen

A radical paradigm shift of wireless networks from ``connected things'' to ``connected intelligence'' undergoes, which coincides with the Shanno and Weaver's envisions: Communications will transform from the technical level to the semantic level.

Defect Detection

Learning Multiscale Correlations for Human Motion Prediction

no code implementations19 Mar 2021 Honghong Zhou, Caili Guo, Hao Zhang, Yanjun Wang

We evaluate our approach on two standard benchmark datasets for human motion prediction: Human3. 6M and CMU motion capture dataset.

Human motion prediction motion prediction

Optimization of User Selection and Bandwidth Allocation for Federated Learning in VLC/RF Systems

no code implementations5 Mar 2021 Chuanhong Liu, Caili Guo, Yang Yang, Mingzhe Chen, H. Vincent Poor, Shuguang Cui

Then, the problem of user selection and bandwidth allocation is studied for FL implemented over a hybrid VLC/RF system aiming to optimize the FL performance.

Federated Learning

Multi-Agent Deep Reinforcement Learning enabled Computation Resource Allocation in a Vehicular Cloud Network

no code implementations14 Aug 2020 Shilin Xu, Caili Guo, Rose Qingyang Hu, Yi Qian

To support the ever increasing computational needs in such a vehicular network, the distributed virtual cloud network (VCN) is formed, based on which a computational resource sharing scheme through offloading among nearby vehicles is proposed.

Combinatorial Optimization Reinforcement Learning (RL)

Power Efficient LED Placement Algorithm for Indoor Visible Light Communication

no code implementations17 Jun 2020 Yang Yang, Zhiyu Zhu, Caili Guo, Chunyan Feng

Due to the interactions among LEDs and the illumination uniformity constraint, the formulated problem is complex and non-convex.

Exploiting Visual Semantic Reasoning for Video-Text Retrieval

no code implementations16 Jun 2020 Zerun Feng, Zhimin Zeng, Caili Guo, Zheng Li

Finally, the region features are aggregated to form frame-level features for further encoding to measure video-text similarity.

Retrieval Text Retrieval +2

A Novel Received Signal Strength Assisted Perspective-three-Point Algorithm for Indoor Visible Light Positioning

no code implementations21 May 2020 Lin Bai, Yang Yang, Chunyan Feng, Caili Guo

The basic idea of R-P3P is to joint visual and strength information to estimate the receiver position using 3 LEDs regardless of the LEDs' orientations.

Position

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