Search Results for author: Xiwei Xu

Found 34 papers, 6 papers with code

Object Detection for Graphical User Interface: Old Fashioned or Deep Learning or a Combination?

2 code implementations12 Aug 2020 Jieshan Chen, Mulong Xie, Zhenchang Xing, Chunyang Chen, Xiwei Xu, Liming Zhu, Guoqiang Li

We conduct the first large-scale empirical study of seven representative GUI element detection methods on over 50k GUI images to understand the capabilities, limitations and effective designs of these methods.

Code Generation object-detection +1

MAMO: Memory-Augmented Meta-Optimization for Cold-start Recommendation

1 code implementation7 Jul 2020 Manqing Dong, Feng Yuan, Lina Yao, Xiwei Xu, Liming Zhu

However, most meta-learning based recommendation approaches adopt model-agnostic meta-learning for parameter initialization, where the global sharing parameter may lead the model into local optima for some users.

Meta-Learning Recommendation Systems

Unblind Your Apps: Predicting Natural-Language Labels for Mobile GUI Components by Deep Learning

1 code implementation1 Mar 2020 Jieshan Chen, Chunyang Chen, Zhenchang Xing, Xiwei Xu, Liming Zhu, Guoqiang Li, Jinshui Wang

However, the prerequisite of using screen readers is that developers have to add natural-language labels to the image-based components when they are developing the app.

Missing Labels

Psychologically-Inspired, Unsupervised Inference of Perceptual Groups of GUI Widgets from GUI Images

1 code implementation15 Jun 2022 Mulong Xie, Zhenchang Xing, Sidong Feng, Chunyang Chen, Liming Zhu, Xiwei Xu

These principles are domain-independent and have been widely adopted by practitioners to structure content on GUIs to improve aesthetic pleasant and usability.

Metric Factorization: Recommendation beyond Matrix Factorization

2 code implementations13 Feb 2018 Shuai Zhang, Lina Yao, Yi Tay, Xiwei Xu, Xiang Zhang, Liming Zhu

In the past decade, matrix factorization has been extensively researched and has become one of the most popular techniques for personalized recommendations.

Cycle-Balanced Representation Learning For Counterfactual Inference

1 code implementation29 Oct 2021 Guanglin Zhou, Lina Yao, Xiwei Xu, Chen Wang, Liming Zhu

With the widespread accumulation of observational data, researchers obtain a new direction to learn counterfactual effects in many domains (e. g., health care and computational advertising) without Randomized Controlled Trials(RCTs).

counterfactual Counterfactual Inference +2

Survey for Trust-aware Recommender Systems: A Deep Learning Perspective

no code implementations8 Apr 2020 Manqing Dong, Feng Yuan, Lina Yao, Xianzhi Wang, Xiwei Xu, Liming Zhu

A significant remaining challenge for existing recommender systems is that users may not trust the recommender systems for either lack of explanation or inaccurate recommendation results.

Recommendation Systems

Blockchain-based Federated Learning for Failure Detection in Industrial IoT

no code implementations6 Sep 2020 Weishan Zhang, Qinghua Lu, Qiuyu Yu, Zhaotong Li, Yue Liu, Sin Kit Lo, Shiping Chen, Xiwei Xu, Liming Zhu

Therefore, in this paper, we present a platform architecture of blockchain-based federated learning systems for failure detection in IIoT.

Federated Learning Privacy Preserving

Meta Gradient Boosting Neural Networks

no code implementations1 Jan 2021 Manqing Dong, Lina Yao, Xianzhi Wang, Xiwei Xu, Liming Zhu

A key challenge for meta-optimization based approaches is to determine whether an initialization condition can be generalized to tasks with diverse distributions to accelerate learning.

Meta-Learning regression

Generating Informative CVE Description From ExploitDB Posts by Extractive Summarization

no code implementations5 Jan 2021 Jiamou Sun, Zhenchang Xing, Hao Guo, Deheng Ye, Xiaohong Li, Xiwei Xu, Liming Zhu

The extracted aspects from an ExploitDB post are then composed into a CVE description according to the suggested CVE description templates, which is must-provided information for requesting new CVEs.

Extractive Summarization Text Summarization

Architectural Patterns for the Design of Federated Learning Systems

no code implementations7 Jan 2021 Sin Kit Lo, Qinghua Lu, Liming Zhu, Hye-Young Paik, Xiwei Xu, Chen Wang

Therefore, in this paper, we present a collection of architectural patterns to deal with the design challenges of federated learning systems.

BIG-bench Machine Learning Federated Learning +1

AI and Ethics -- Operationalising Responsible AI

no code implementations19 May 2021 Liming Zhu, Xiwei Xu, Qinghua Lu, Guido Governatori, Jon Whittle

In the last few years, AI continues demonstrating its positive impact on society while sometimes with ethically questionable consequences.

Ethics

Blockchain-based Trustworthy Federated Learning Architecture

no code implementations16 Aug 2021 Sin Kit Lo, Yue Liu, Qinghua Lu, Chen Wang, Xiwei Xu, Hye-Young Paik, Liming Zhu

To enhance the accountability and fairness of federated learning systems, we present a blockchain-based trustworthy federated learning architecture.

Fairness Federated Learning +1

Software Engineering for Responsible AI: An Empirical Study and Operationalised Patterns

no code implementations18 Nov 2021 Qinghua Lu, Liming Zhu, Xiwei Xu, Jon Whittle, David Douglas, Conrad Sanderson

These patterns provide concrete, operationalised guidance that facilitate the development of responsible AI systems.

Ethics

Responsible-AI-by-Design: a Pattern Collection for Designing Responsible AI Systems

no code implementations2 Mar 2022 Qinghua Lu, Liming Zhu, Xiwei Xu, Jon Whittle

In the meantime much effort has been put into responsible AI from the algorithm perspective, but they are limited to a small subset of ethical principles amenable to mathematical analysis.

Towards a Roadmap on Software Engineering for Responsible AI

no code implementations9 Mar 2022 Qinghua Lu, Liming Zhu, Xiwei Xu, Jon Whittle, Zhenchang Xing

Although AI is transforming the world, there are serious concerns about its ability to behave and make decisions responsibly.

Learning to Infer Counterfactuals: Meta-Learning for Estimating Multiple Imbalanced Treatment Effects

no code implementations13 Aug 2022 Guanglin Zhou, Lina Yao, Xiwei Xu, Chen Wang, Liming Zhu

We regularly consider answering counterfactual questions in practice, such as "Would people with diabetes take a turn for the better had they choose another medication?".

counterfactual Counterfactual Inference +3

Contrastive Counterfactual Learning for Causality-aware Interpretable Recommender Systems

no code implementations13 Aug 2022 Guanglin Zhou, Chengkai Huang, Xiaocong Chen, Xiwei Xu, Chen Wang, Liming Zhu, Lina Yao

Recognizing that confounders may be elusive, we propose a contrastive self-supervised learning to minimize exposure bias, employing inverse propensity scores and expanding the positive sample set.

Causal Inference counterfactual +2

Responsible AI Pattern Catalogue: A Collection of Best Practices for AI Governance and Engineering

no code implementations12 Sep 2022 Qinghua Lu, Liming Zhu, Xiwei Xu, Jon Whittle, Didar Zowghi, Aurelie Jacquet

Rather than staying at the principle or algorithm level, we focus on patterns that AI system stakeholders can undertake in practice to ensure that the developed AI systems are responsible throughout the entire governance and engineering lifecycle.

Ethics Fairness

IronForge: An Open, Secure, Fair, Decentralized Federated Learning

no code implementations7 Jan 2023 Guangsheng Yu, Xu Wang, Caijun Sun, Qin Wang, Ping Yu, Wei Ni, Ren Ping Liu, Xiwei Xu

Federated learning (FL) provides an effective machine learning (ML) architecture to protect data privacy in a distributed manner.

Fairness Federated Learning

Developing Responsible Chatbots for Financial Services: A Pattern-Oriented Responsible AI Engineering Approach

no code implementations3 Jan 2023 Qinghua Lu, Yuxiu Luo, Liming Zhu, Mingjian Tang, Xiwei Xu, Jon Whittle

In this article, we first summarise the major challenges in operationalising responsible AI at scale and introduce how we use the Responsible AI Pattern Catalogue to address those challenges.

Chatbot Fairness

Emerging Synergies in Causality and Deep Generative Models: A Survey

no code implementations29 Jan 2023 Guanglin Zhou, Shaoan Xie, GuangYuan Hao, Shiming Chen, Biwei Huang, Xiwei Xu, Chen Wang, Liming Zhu, Lina Yao, Kun Zhang

In the field of artificial intelligence (AI), the quest to understand and model data-generating processes (DGPs) is of paramount importance.

Causal Identification Fairness +1

Blockchain-Empowered Trustworthy Data Sharing: Fundamentals, Applications, and Challenges

no code implementations12 Mar 2023 Linh T. Nguyen, Lam Duc Nguyen, Thong Hoang, Dilum Bandara, Qin Wang, Qinghua Lu, Xiwei Xu, Liming Zhu, Petar Popovski, Shiping Chen

Second, we focus on the convergence of blockchain and data sharing to give a clear picture of this landscape and propose a reference architecture for blockchain-based data sharing.

A Taxonomy of Foundation Model based Systems through the Lens of Software Architecture

no code implementations9 May 2023 Qinghua Lu, Liming Zhu, Xiwei Xu, Yue Liu, Zhenchang Xing, Jon Whittle

The recent release of large language model (LLM) based chatbots, such as ChatGPT, has attracted huge interest in foundation models.

Language Modelling Large Language Model

Distributed Trust Through the Lens of Software Architecture

no code implementations25 May 2023 Sin Kit Lo, Yue Liu, Guangsheng Yu, Qinghua Lu, Xiwei Xu, Liming Zhu

Distributed trust is a nebulous concept that has evolved from different perspectives in recent years.

Attribute Federated Learning

Query2GMM: Learning Representation with Gaussian Mixture Model for Reasoning over Knowledge Graphs

no code implementations17 Jun 2023 Yuhan Wu, Yuanyuan Xu, Wenjie Zhang, Xiwei Xu, Ying Zhang

Research along this line suggests that using multi-modal distribution to represent answer entities is more suitable than uni-modal distribution, as a single query may contain multiple disjoint answer subsets due to the compositional nature of multi-hop queries and the varying latent semantics of relations.

Knowledge Graphs

Right to be Forgotten in the Era of Large Language Models: Implications, Challenges, and Solutions

no code implementations8 Jul 2023 Dawen Zhang, Pamela Finckenberg-Broman, Thong Hoang, Shidong Pan, Zhenchang Xing, Mark Staples, Xiwei Xu

In this paper, we explore these challenges and provide our insights on how to implement technical solutions for the RTBF, including the use of differential privacy, machine unlearning, model editing, and prompt engineering.

Machine Unlearning Model Editing +1

Test-takers have a say: understanding the implications of the use of AI in language tests

no code implementations19 Jul 2023 Dawen Zhang, Thong Hoang, Shidong Pan, Yongquan Hu, Zhenchang Xing, Mark Staples, Xiwei Xu, Qinghua Lu, Aaron Quigley

To the best of our knowledge, this is the first empirical study aimed at identifying the implications of AI adoption in language tests from a test-taker perspective.

Fairness

Towards Responsible Generative AI: A Reference Architecture for Designing Foundation Model based Agents

no code implementations22 Nov 2023 Qinghua Lu, Liming Zhu, Xiwei Xu, Zhenchang Xing, Stefan Harrer, Jon Whittle

Foundation models, such as large language models (LLMs), have been widely recognised as transformative AI technologies due to their capabilities to understand and generate content, including plans with reasoning capabilities.

Language Modelling Large Language Model

Navigating Privacy and Copyright Challenges Across the Data Lifecycle of Generative AI

no code implementations30 Nov 2023 Dawen Zhang, Boming Xia, Yue Liu, Xiwei Xu, Thong Hoang, Zhenchang Xing, Mark Staples, Qinghua Lu, Liming Zhu

The advent of Generative AI has marked a significant milestone in artificial intelligence, demonstrating remarkable capabilities in generating realistic images, texts, and data patterns.

Data Poisoning Machine Unlearning

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