no code implementations • 27 Feb 2025 • Yuanyuan Xu, Wenjie Zhang, Ying Zhang, Xuemin Lin, Xiwei Xu
Dynamic Text-Attributed Graphs (DyTAGs) are a novel graph paradigm that captures evolving temporal edges alongside rich textual attributes.
no code implementations • 25 Feb 2025 • Minh Duc Vu, Jieshan Chen, Zhenchang Xing, Qinghua Lu, Xiwei Xu, QiAn Fu
With the proliferation of data across various domains, there is a critical demand for tools that enable non-experts to derive meaningful insights without deep data analysis skills.
no code implementations • 10 Feb 2025 • Jing Ren, Tao Tang, Hong Jia, Haytham Fayek, XiaoDong Li, Suyu Ma, Xiwei Xu, Feng Xia
As data continues to grow in volume and complexity across domains such as finance, manufacturing, and healthcare, effective anomaly detection is essential for identifying irregular patterns that may signal critical issues.
1 code implementation • 4 Jan 2025 • Jianwei Wang, Kai Wang, Ying Zhang, Wenjie Zhang, Xiwei Xu, Xuemin Lin
Missing data imputation, which aims to impute the missing values in the raw datasets to achieve the completeness of datasets, is crucial for modern data-driven models like large language models (LLMs) and has attracted increasing interest over the past decades.
no code implementations • 27 Nov 2024 • Jieshan Chen, Zhen Wang, Jiamou Sun, Wenbo Zou, Zhenchang Xing, Qinghua Lu, Qing Huang, Xiwei Xu
While some studies targeted at automated detection, they are constrained to static patterns and still necessitate manual app exploration.
no code implementations • 19 Nov 2024 • Dawen Zhang, Xiwei Xu, Chen Wang, Zhenchang Xing, Robert Mao
Significant efforts has been made to expand the use of Large Language Models (LLMs) beyond basic language tasks.
1 code implementation • 18 Oct 2024 • Xingyu Tan, Xiaoyang Wang, Qing Liu, Xiwei Xu, Xin Yuan, Wenjie Zhang
In order to improve the efficiency, PoG prunes irrelevant information from the graph exploration first and introduces efficient three-step pruning techniques that incorporate graph structures, LLM prompting, and a pre-trained language model (e. g., SBERT) to effectively narrow down the explored candidate paths.
Ranked #1 on
Knowledge Base Question Answering
on ComplexWebQuestions
(EM metric)
no code implementations • 6 Aug 2024 • Jingwen Zhou, Qinghua Lu, Jieshan Chen, Liming Zhu, Xiwei Xu, Zhenchang Xing, Stefan Harrer
The rapid advancement of AI technology has led to widespread applications of agent systems across various domains.
no code implementations • 16 May 2024 • Yue Liu, Sin Kit Lo, Qinghua Lu, Liming Zhu, Dehai Zhao, Xiwei Xu, Stefan Harrer, Jon Whittle
Foundation model-enabled generative artificial intelligence facilitates the development and implementation of agents, which can leverage distinguished reasoning and language processing capabilities to takes a proactive, autonomous role to pursue users' goals.
no code implementations • 14 Feb 2024 • Shiyi Yang, Lina Yao, Chen Wang, Xiwei Xu, Liming Zhu
Recent studies have shown that recommender systems (RSs) are highly vulnerable to data poisoning attacks.
no code implementations • 30 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.
no code implementations • 22 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.
no code implementations • 19 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.
no code implementations • 8 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 guardrails.
no code implementations • 17 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.
no code implementations • 25 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.
no code implementations • 9 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.
no code implementations • 13 Apr 2023 • Qinghua Lu, Liming Zhu, Xiwei Xu, Zhenchang Xing, Jon Whittle
The release of ChatGPT, Gemini, and other large language model has drawn huge interests on foundations models.
no code implementations • 12 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.
no code implementations • 7 Feb 2023 • Dawen Zhang, Shidong Pan, Thong Hoang, Zhenchang Xing, Mark Staples, Xiwei Xu, Lina Yao, Qinghua Lu, Liming Zhu
The right to be forgotten (RTBF) is motivated by the desire of people not to be perpetually disadvantaged by their past deeds.
no code implementations • 29 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.
1 code implementation • 7 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.
no code implementations • 3 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.
no code implementations • 12 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.
no code implementations • 13 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.
no code implementations • 13 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?".
1 code implementation • 15 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.
no code implementations • 9 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.
no code implementations • 2 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.
no code implementations • 18 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.
1 code implementation • 29 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).
no code implementations • 16 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.
no code implementations • 19 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.
no code implementations • 7 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.
no code implementations • 5 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.
no code implementations • 1 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.
no code implementations • 4 Nov 2020 • Xiaocong Chen, Lina Yao, Aixin Sun, Xianzhi Wang, Xiwei Xu, Liming Zhu
Deep reinforcement learning uses a reward function to learn user's interest and to control the learning process.
no code implementations • 6 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.
2 code implementations • 12 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.
1 code implementation • 7 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.
no code implementations • 8 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.
1 code implementation • 1 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.
2 code implementations • 13 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.