Human-Cloud Systems Laboraotry, CUHK-Shenzhen

Our Work “SemNFT: A Semantically Enhanced Decentralized Middleware for Digital Asset Immortality” Is Accepted By ACM MM’24

2024-08-252024-08-26 admin

Non-Fungible Tokens (NFTs) have emerged as a pivotal digital asset, offering authenticated ownership of unique digital content. Despite it has gained remarkable traction, yet face pressing storage and verification challenges stemming from blockchain’s permanent data costs. Existing off-chain or centralized storage solutions, while being alternatives, also introduce notable security vulnerabilities. We present SemNFT, an innovative decentralized framework integrated with blockchain oracle middleware services, addressing these persistent NFT dilemmas.

Our work “ARTEMIS: Detecting Airdrop Hunters in NFT Markets with a Graph Learning System” is accepted by ACM WWW’24

2024-02-232024-08-26 admin

Airdrops have become a standard tactic in Web3 business operations, with Decentralized Applications (DApps) distributing tokens to encourage user engagement based on smart contract rules. This practice has led to the emergence of “airdrop hunters,” individuals who collect wallet addresses to claim these generous token giveaways by interacting with the contracts. While airdrops are beneficial for attracting early DApp users, the self-trading activities of hunters to appear as active participants threaten the ecosystem’s integrity and challenge the decentralization goals of DApps. DApp teams face the challenge of detecting airdrop hunters without disadvantaging genuine users.

Our Work “Web3 Metaverse: State-of-the-Art and Vision” Is Accepted By ACM Transactions on Multimedia Computing, Communications, and Applications (TOMM)

2023-10-272024-09-10 admin

The metaverse, as a rapidly evolving socio-technical phenomenon, exhibits significant potential across diverse domains by leveraging Web3 (a.k.a. Web 3.0) technologies such as blockchain, smart contracts, and non-fungible tokens (NFTs). This survey aims to provide a comprehensive overview of the Web3 metaverse from a human-centered perspective. We systematically review the metaverse’s industrial (data from Dow Jones Factiva database) and academic (data from Google Scholar website) developments over the past 30 years, highlighting the balanced contributions from its core components: Web3, immersive convergence, and crowd intelligence communities.

Our Work “MetaCast: A Self-Driven Metaverse Announcer Architecture Based on Quality of Experience Evaluation Model” Is Accepted By ACM MM’ 23

2023-09-172023-09-17 admin

We propose a three-stage architecture for metaverse announcers, which is designed to identify events, position cameras, and blend between shots. Based on the architecture, we introduce a Metaverse Announcer User Experience (MAUE) model to identify the factors affecting the users’ Quality of Experience (QoE) from a human-centered perspective. In addition, we implement MetaCast, a practical self-driven metaverse announcer in a university campus metaverse prototype, to conduct user studies for MAUE model. The experimental results have effectively achieved satisfactory announcer settings that align with the preferences of most users, encompassing parameters such as video transition rate, repetition rate, importance threshold value, and image composition.

Our paper on Blockchain-Based Carbon Market Analysis Accepted by IEEE Wireless Communications Magazine

2023-07-212024-02-23 admin

To understand the role of blockchain in sustainability, we propose a three-tier structure based on the lifecycle of natural resources, encapsulating four utilities of blockchain: recording and tracking, wide verification, value trading, and concept disseminating. Based on this, we conduct a case study on Nori, a carbon credit market running on blockchain. Nori leverages the characteristics of blockchain, including public and immutable records, widespread verification achieved through smart contracts, and value creation through token and NFT transactions, to address issues in traditional carbon emission markets.

Our Work On NFT Market Manipulation Accepted By IEEE Transactions On Computational Social Systems

2023-01-042024-08-25 admin

Our recent work “How Information Manipulation on Social Media Influences the NFT Investors’ Behavior: A Case Study of Goblintown.wtf” is accepted to be published in IEEE Transactions On Computational Social Systems.

Our Work MetaCube Editor Accepted By IEEE Communications Magazine

2022-12-262023-10-27 admin

Our recent work MetaCube is accepted to be published in IEEE Communications Magazine. In this work, we propose 3D Crypto-dropout, which utilizes Web3 users’ information to generate unique fine-grained 3D models for metaverse. Web3 (also known as Web 3.0) metaverse is a blockchain-driven networked, decentralized, and open virtual world. The key feature of the Web3 […]

Our Work on Analyzing Player Behavior in Blockchain Games Accepted by ACM FDG’22

2022-06-042023-02-19 admin

Our recent work titled “Towards Understanding Player Behavior in Blockchain Games: A Case Study of Aavegotchi” is accepted by the 17th International Conference on the Foundations of Digital Games (FDG 2022). Blockchain games introduces unique gameplay and incentive mechanisms by allowing players to be rewarded with in-game assets or tokens through financial activities. In practice, […]

Our paper “Economic Analysis of Decentralized Exchange Market with Transaction Fee Mining” received the Best Paper Award from ACM BSCI’22!

2022-05-312023-07-21 admin

In this paper, we establish the DEX market with transaction fee mining and formulate our model based on the Hotelling model. Besides, we propose a two-stage game to formulate the interaction between DEXs and users and derive the equilibriums under different conditions of two parameters: the transaction cost difference and users’ stickiness. We show that though the service provider with a lower transaction cost can win the market, users’ stickiness can offset the market advantage. Thus, incentivizing users with transaction fee mining has become a crucial strategy in the duopoly competition.

Our Metaverse Paper presented in ACM MM’21 has reached 1000 citations

2021-08-202024-08-25 admin

According to Google Scholar [link], our paper “Metaverse for Social Good: A University Campus Prototype,” presented in the Brave New Ideas (BNI) track of the 29th ACM International Conference on Multimedia (ACM MM ’21), has reached 1,000 citations. Additionally, statistics from the ACM Digital Library indicate that this paper has been downloaded over 10,000 times, […]