no code implementations • 26 May 2025 • Shuang Ao, Flora D. Salim, Simon Khan
Although LLMs demonstrate proficiency in several text-based reasoning and planning tasks, their implementation in robotics control is constrained by significant deficiencies: (1) LLM agents are designed to work mainly with textual inputs rather than visual conditions; (2) Current multimodal agents treat LLMs as static planners, which separates their reasoning from environment dynamics, resulting in actions that do not take domain-specific knowledge into account; and (3) LLMs are not designed to learn from visual interactions, which makes it harder for them to make better policies for specific domains.
no code implementations • 20 May 2025 • Ruiyi Yang, Hao Xue, Imran Razzak, Hakim Hacid, Flora D. Salim
Retrieval-Augmented Generation (RAG) systems empower large language models (LLMs) with external knowledge, yet struggle with efficiency-accuracy trade-offs when scaling to large knowledge graphs.
no code implementations • 17 May 2025 • Yuncheng Hua, Ji Miao, Mehdi Jafari, Jianxiang Xie, Hao Xue, Flora D. Salim
This paper introduces SOCIA (Simulation Orchestration for Cyber-physical-social Intelligence and Agents), a novel end-to-end framework leveraging Large Language Model (LLM)-based multi-agent systems to automate the generation of high-fidelity Cyber-Physical-Social (CPS) simulators.
1 code implementation • 16 May 2025 • Wilson Wongso, Hao Xue, Flora D. Salim
By releasing Massive-STEPS, we aim to facilitate reproducible and equitable research in human mobility and POI recommendation.
no code implementations • 11 Apr 2025 • Yonchanok Khaokaew, Flora D. Salim, Andreas Züfle, Hao Xue, Taylor Anderson, C. Raina MacIntyre, Matthew Scotch, David J Heslop
Generative agents have been increasingly used to simulate human behaviour in silico, driven by large language models (LLMs).
no code implementations • 19 Mar 2025 • Shijing Chen, Shoaib Jameel, Mohamed Reda Bouadjenek, Feilong Tang, Usman Naseem, Basem Suleiman, Hakim Hacid, Flora D. Salim, Imran Razzak
Traditional Multi-level Hierarchical Classification (MLHC) classifiers often rely on backbone models with $n$ independent output layers.
no code implementations • 19 Mar 2025 • Ghadir Alselwi, Hao Xue, Shoaib Jameel, Basem Suleiman, Flora D. Salim, Imran Razzak
Effective long-term memory management is crucial for language models handling extended contexts.
no code implementations • 18 Mar 2025 • Ruiyi Yang, Hao Xue, Imran Razzak, Hakim Hacid, Flora D. Salim
Graph Retrieval-Augmented Generation (GraphRAG) has proven highly effective in enhancing the performance of Large Language Models (LLMs) on tasks that require external knowledge.
1 code implementation • 17 Feb 2025 • Yuncheng Hua, Lizhen Qu, Zhuang Li, Hao Xue, Flora D. Salim, Gholamreza Haffari
This paper proposes a low-cost, tuning-free method using in-context learning (ICL) to enhance LLM alignment.
no code implementations • 16 Feb 2025 • Jiayu Zhang, Zhiyu Zhu, Xinyi Wang, Silin Liao, Zhibo Jin, Flora D. Salim, Huaming Chen
We thoroughly evaluate our PAR-AdvGAN method with a large-scale experiment, demonstrating its superior performance over various state-of-the-art black-box adversarial attacks, as well as the original AdvGAN. Moreover, PAR-AdvGAN significantly accelerates the adversarial example generation, i. e., achieving the speeds of up to 335. 5 frames per second on Inception-v3 model, outperforming the gradient-based transferable attack algorithms.
no code implementations • 12 Jan 2025 • Shijing Chen, Mohamed Reda Bouadjenek, Shoaib Jameel, Usman Naseem, Basem Suleiman, Flora D. Salim, Hakim Hacid, Imran Razzak
Multi-level Hierarchical Classification (MLHC) tackles the challenge of categorizing items within a complex, multi-layered class structure.
no code implementations • 11 Nov 2024 • Futoon M. Abushaqra, Hao Xue, Yongli Ren, Flora D. Salim
Addressing the challenges of irregularity and concept drift in streaming time series is crucial in real-world predictive modelling.
no code implementations • 28 Oct 2024 • Xiachong Lin, Arian Prabowo, Imran Razzak, Hao Xue, Matthew Amos, Sam Behrens, Flora D. Salim
The growing integration of digitized infrastructure with Internet of Things (IoT) networks has transformed the management and optimization of building energy consumption.
1 code implementation • 28 Oct 2024 • Wilson Wongso, Hao Xue, Flora D. Salim
Traditional Point-of-Interest (POI) recommendation systems often lack transparency, interpretability, and scrutability due to their reliance on dense vector-based user embeddings.
1 code implementation • 14 Oct 2024 • Zechen Li, Shohreh Deldari, Linyao Chen, Hao Xue, Flora D. Salim
This alignment enables LLMs to interpret numerical patterns, channel-specific signals, and variable-length inputs--without requiring human annotation.
no code implementations • 26 Jul 2024 • Yonchanok Khaokaew, Hao Xue, Mohammad Saiedur Rahaman, Flora D. Salim
Occupation information can be utilized by digital assistants to provide occupation-specific personalized task support, including interruption management, task planning, and recommendations.
no code implementations • 25 Jul 2024 • Yufan Kang, Jeffrey Chan, Wei Shao, Flora D. Salim, Christopher Leckie
The recent studies that focus on fairness in ride-hailing exploit traditional optimisation methods and the Markov Decision Process to balance efficiency and fairness.
no code implementations • 19 Jul 2024 • Shohreh Deldari, Mohammad Goudarzi, Aditya Joshi, Arash Shaghaghi, Simon Finn, Flora D. Salim, Sanjay Jha
In the age of information overload, professionals across various fields face the challenge of navigating vast amounts of documentation and ever-evolving standards.
1 code implementation • 20 Jun 2024 • Shuang Ao, Simon Khan, Haris Aziz, Flora D. Salim
Understanding the agent's learning process in complicated environments or tasks is more challenging.
1 code implementation • 19 Jun 2024 • Tianqi Tang, Shohreh Deldari, Hao Xue, Celso de Melo, Flora D. Salim
This framework addresses challenges including memory complexity from long video clips, natural language complexity from open queries, and text-video misalignment.
1 code implementation • 13 Jun 2024 • Arian Prabowo, Xiachong Lin, Imran Razzak, Hao Xue, Emily W. Yap, Matthew Amos, Flora D. Salim
Buildings play a crucial role in human well-being, influencing occupant comfort, health, and safety.
1 code implementation • 5 Jun 2024 • Francis Zac dela Cruz, Flora D. Salim, Yonchanok Khaokaew, Jeffrey Chan
Experiments show that a linear scoring model for provider fairness in re-scoring items offers the best balance between performance and long-tail exposure, sometimes without much precision loss.
no code implementations • 4 Jun 2024 • Wei Shao, Rongyi Zhu, Cai Yang, Chandra Thapa, Muhammad Ejaz Ahmed, Seyit Camtepe, Rui Zhang, Duyong Kim, Hamid Menouar, Flora D. Salim
Spatiotemporal data is prevalent in a wide range of edge devices, such as those used in personal communication and financial transactions.
no code implementations • 29 May 2024 • Yufan Kang, Rongsheng Zhang, Wei Shao, Flora D. Salim, Jeffrey Chan
Dynamic Vehicle Routing Problem (DVRP), is an extension of the classic Vehicle Routing Problem (VRP), which is a fundamental problem in logistics and transportation.
no code implementations • 23 May 2024 • Xiachong Lin, Arian Prabowo, Imran Razzak, Hao Xue, Matthew Amos, Sam Behrens, Flora D. Salim
The increasing demand for sustainable energy solutions has driven the integration of digitalized buildings into the power grid, leveraging Internet-of-Things (IoT) technologies to enhance energy efficiency and operational performance.
no code implementations • 21 May 2024 • Kaixin Ji, Sachin Pathiyan Cherumanal, Johanne R. Trippas, Danula Hettiachchi, Flora D. Salim, Falk Scholer, Damiano Spina
Instruments such as eye-tracking devices have contributed to understanding how users interact with screen-based search engines.
1 code implementation • 1 May 2024 • Kaixin Ji, Danula Hettiachchi, Flora D. Salim, Falk Scholer, Damiano Spina
Information access systems are getting complex, and our understanding of user behavior during information seeking processes is mainly drawn from qualitative methods, such as observational studies or surveys.
1 code implementation • 19 Apr 2024 • Peibo Li, Maarten de Rijke, Hao Xue, Shuang Ao, Yang song, Flora D. Salim
Our results show that the proposed framework outperforms the state-of-the-art models in all three datasets.
no code implementations • 6 Mar 2024 • Hao Xue, Tianye Tang, Ali Payani, Flora D. Salim
Specifically, the framework includes a prompt generation stage based on the information entropy of prompts and a prompt refinement stage to integrate mechanisms such as the chain of thought.
1 code implementation • 19 Feb 2024 • Ruiyi Yang, Flora D. Salim, Hao Xue
Our framework offers a simple but comprehensive way to understand the underlying patterns and trends in dynamic KG, thereby enhancing the accuracy of predictions and the relevance of recommendations.
no code implementations • 6 Dec 2023 • Aaron J. Snoswell, Lucinda Nelson, Hao Xue, Flora D. Salim, Nicolas Suzor, Jean Burgess
Generic `toxicity' classifiers continue to be used for evaluating the potential for harm in natural language generation, despite mounting evidence of their shortcomings.
1 code implementation • 26 Oct 2023 • Hao Xue, Flora D. Salim
Energy load forecasting plays a crucial role in optimizing resource allocation and managing energy consumption in buildings and cities.
2 code implementations • 24 Oct 2023 • Yonchanok Khaokaew, Kaixin Ji, Thuc Hanh Nguyen, Hiruni Kegalle, Marwah Alaofi, Hao Xue, Flora D. Salim
This paper explores the intersection of technology and sleep pattern comprehension, presenting a cutting-edge two-stage framework that harnesses the power of Large Language Models (LLMs).
no code implementations • 2 Oct 2023 • Hao Xue, Flora D. Salim
The aim of the task is to let the intelligent system learn from mobility data and answer related questions.
1 code implementation • 15 Sep 2023 • Yonchanok Khaokaew, Hao Xue, Flora D. Salim
This study introduces a novel prediction model, Mobile App Prediction Leveraging Large Language Model Embeddings (MAPLE), which employs Large Language Models (LLMs) and installed app similarity to overcome these challenges.
1 code implementation • 8 Sep 2023 • Arian Prabowo, KaiXuan Chen, Hao Xue, Subbu Sethuvenkatraman, Flora D. Salim
In traditional deep learning algorithms, one of the key assumptions is that the data distribution remains constant during both training and deployment.
no code implementations • 8 Sep 2023 • Edward A. Small, Jeffrey N. Clark, Christopher J. McWilliams, Kacper Sokol, Jeffrey Chan, Flora D. Salim, Raul Santos-Rodriguez
Counterfactuals operationalised through algorithmic recourse have become a powerful tool to make artificial intelligence systems explainable.
no code implementations • 24 Aug 2023 • Yuxi Liu, Zhenhao Zhang, Shaowen Qin, Flora D. Salim, Antonio Jimeno Yepes, Jun Shen, Jiang Bian
In this paper, we propose a novel Hypergraph Convolutional Network that allows the representation of non-pairwise relationships among diagnosis codes in a hypergraph to capture the hidden feature structures so that fine-grained patient similarity can be calculated for personalized mortality risk prediction.
1 code implementation • 20 Aug 2023 • Danula Hettiachchi, Kaixin Ji, Jenny Kennedy, Anthony McCosker, Flora D. Salim, Mark Sanderson, Falk Scholer, Damiano Spina
We address this research gap by exploring the critical design elements in fact-checking reports and investigating whether credibility and presentation-based design improvements can enhance users' ability to interpret the report accurately.
1 code implementation • 19 Aug 2023 • Yuxi Liu, Zhenhao Zhang, Shaowen Qin, Flora D. Salim, Antonio Jimeno Yepes
Existing approaches focus on exploiting the variable correlations in patient medical records to impute missing values and establishing time-decay mechanisms to deal with such irregularity.
1 code implementation • 10 Jun 2023 • Arian Prabowo, KaiXuan Chen, Hao Xue, Subbu Sethuvenkatraman, Flora D. Salim
One of the primary reasons for this is the shift in distribution of occupancy patterns, with many people working or learning from home.
1 code implementation • 9 May 2023 • Arian Prabowo, Hao Xue, Wei Shao, Piotr Koniusz, Flora D. Salim
During inference, the spatial encoder only requires two days of traffic data on the new roads and does not require any re-training.
no code implementations • 9 May 2023 • Arian Prabowo, Hao Xue, Wei Shao, Piotr Koniusz, Flora D. Salim
A road network, in the context of traffic forecasting, is typically modeled as a graph where the nodes are sensors that measure traffic metrics (such as speed) at that location.
no code implementations • 1 May 2023 • Jason Liu, Shohreh Deldari, Hao Xue, Van Nguyen, Flora D. Salim
In the context of mobile sensing environments, various sensors on mobile devices continually generate a vast amount of data.
1 code implementation • 19 Apr 2023 • Edward A. Small, Kacper Sokol, Daniel Manning, Flora D. Salim, Jeffrey Chan
Group fairness is achieved by equalising prediction distributions between protected sub-populations; individual fairness requires treating similar individuals alike.
1 code implementation • 20 Feb 2023 • Arian Prabowo, Wei Shao, Hao Xue, Piotr Koniusz, Flora D. Salim
Further analysis also shows that each pair of sensors also has a unique dynamic.
no code implementations • 11 Jan 2023 • Kyle K. Qin, Yongli Ren, Wei Shao, Brennan Lake, Filippo Privitera, Flora D. Salim
Sparsity is a common issue in many trajectory datasets, including human mobility data.
2 code implementations • 30 Dec 2022 • Yang Cao, Ye Zhu, Kai Ming Ting, Flora D. Salim, Hong Xian Li, Luxing Yang, Gang Li
Detecting abrupt changes in data distribution is one of the most significant tasks in streaming data analysis.
1 code implementation • 7 Dec 2022 • Futoon M. Abushaqra, Hao Xue, Yongli Ren, Flora D. Salim
Ordinary Differential Equations (ODE) based models have become popular as foundation models for solving many time series problems.
no code implementations • 11 Nov 2022 • Yuxi Liu, Shaowen Qin, Antonio Jimeno Yepes, Wei Shao, Zhenhao Zhang, Flora D. Salim
Our model can capture both long- and short-term temporal patterns within each patient journey and effectively handle the high degree of missingness in EHR data without any imputation data generation.
2 code implementations • 20 Sep 2022 • Hao Xue, Flora D. Salim
In this novel task, the numerical input and output are transformed into prompts and the forecasting task is framed in a sentence-to-sentence manner, making it possible to directly apply language models for forecasting purposes.
1 code implementation • 11 Sep 2022 • Hao Xue, Bhanu Prakash Voutharoja, Flora D. Salim
In this paper, we propose a novel pipeline that leverages language foundation models for temporal sequential pattern mining, such as for human mobility forecasting tasks.
1 code implementation • 31 Jul 2022 • Shohreh Deldari, Hao Xue, Aaqib Saeed, Daniel V. Smith, Flora D. Salim
Contrastive Learning (CL) is one of the most well-known approaches in SSL that attempts to learn general, informative representations of data.
no code implementations • 13 Jul 2022 • Yuxi Liu, Zhenhao Zhang, Antonio Jimeno Yepes, Flora D. Salim
Building models for health prediction based on Electronic Health Records (EHR) has become an active research area.
no code implementations • 6 Jun 2022 • Shohreh Deldari, Hao Xue, Aaqib Saeed, Jiayuan He, Daniel V. Smith, Flora D. Salim
Unlike existing reviews of SSRL that have pre-dominately focused upon methods in the fields of CV or NLP for a single modality, we aim to provide the first comprehensive review of multimodal self-supervised learning methods for temporal data.
1 code implementation • 10 Feb 2022 • Sichen Zhao, Wei Shao, Jeffrey Chan, Flora D. Salim
Disentangled representation learning offers useful properties such as dimension reduction and interpretability, which are essential to modern deep learning approaches.
1 code implementation • 14 Dec 2021 • Zhaonan Wang, Renhe Jiang, Hao Xue, Flora D. Salim, Xuan Song, Ryosuke Shibasaki
As a decisive part in the success of Mobility-as-a-Service (MaaS), spatio-temporal predictive modeling for crowd movements is a challenging task particularly considering scenarios where societal events drive mobility behavior deviated from the normality.
no code implementations • NeurIPS 2021 • Hao Xue, Flora D. Salim, Yongli Ren, Nuria Oliver
Furthermore, unlike existing methods, we introduce a location prediction branch in MobTCast as an auxiliary task to model the geographical context and predict the next location.
no code implementations • 30 Sep 2021 • Futoon M. Abushaqra, Hao Xue, Yongli Ren, Flora D. Salim
Heterogeneity and irregularity of multi-source data sets present a significant challenge to time-series analysis.
no code implementations • 29 Sep 2021 • Sichen Zhao, Wei Shao, Jeffrey Chan, Flora D. Salim
In this work, we propose a VAE-based architecture for learning the disentangled representation from real spatio-temporal data for mobility forecasting.
no code implementations • 26 Aug 2021 • Yonchanok Khaokaew, Mohammad Saiedur Rahaman, Ryen W. White, Flora D. Salim
App usage prediction is important for smartphone system optimization to enhance user experience.
no code implementations • 22 Aug 2021 • Hui Song, A. K. Qin, Flora D. Salim
In this framework, a specific pipeline is encoded as a candidate solution and a multi-objective evolutionary algorithm is applied under different population sizes to produce multiple Pareto optimal sets (POSs).
no code implementations • 10 Jun 2021 • Mohammad Saiedur Rahaman, Wei Shao, Flora D. Salim, Ayad Turky, Andy Song, Jeffrey Chan, Junliang Jiang, Doug Bradbrook
Existing parking recommendation solutions mainly focus on finding and suggesting parking spaces based on the unoccupied options only.
no code implementations • 19 May 2021 • Wei Shao, Arian Prabowo, Sichen Zhao, Piotr Koniusz, Flora D. Salim
To model and forecast flight delays accurately, it is crucial to harness various vehicle trajectory and contextual sensor data on airport tarmac areas.
no code implementations • 17 May 2021 • Hao Xue, Flora D. Salim
The pre-trained feature encoder is then fine-tuned in the downstream phase to perform cough classification.
1 code implementation • 14 May 2021 • Nan Gao, Max Marschall, Jane Burry, Simon Watkins, Flora D. Salim
We conducted a field study at a K-12 private school in the suburbs of Melbourne, Australia.
no code implementations • 11 Mar 2021 • Ali Hamdi, Flora D. Salim, Du Yong Kim, Azadeh Ghari Neiat, Athman Bouguettaya
Specifically, we propose a service model of DaaS based on the dynamic spatiotemporal features of drones and their in-flight contexts.
2 code implementations • 28 Nov 2020 • Shohreh Deldari, Daniel V. Smith, Hao Xue, Flora D. Salim
Change Point Detection (CPD) methods identify the times associated with changes in the trends and properties of time series data in order to describe the underlying behaviour of the system.
no code implementations • 26 Aug 2020 • Manpreet Kaur, Flora D. Salim, Yongli Ren, Jeffrey Chan, Martin Tomko, Mark Sanderson
This paper investigates the Cyber-Physical behavior of users in a large indoor shopping mall by leveraging anonymized (opt in) Wi-Fi association and browsing logs recorded by the mall operators.
no code implementations • 18 Aug 2020 • Nan Gao, Hao Xue, Wei Shao, Sichen Zhao, Kyle Kai Qin, Arian Prabowo, Mohammad Saiedur Rahaman, Flora D. Salim
Generative Adversarial Networks (GANs) have shown remarkable success in producing realistic-looking images in the computer vision area.
no code implementations • 31 Jul 2020 • Shakila Khan Rumi, Kyle K. Qin, Flora D. Salim
In this paper, we formulate the dynamic crime patrol planning problem for multiple police officers using check-ins, crime, incident response data, and POI information.
no code implementations • 30 Jul 2020 • Ali Hamdi, Du Yong Kim, Flora D. Salim
We compare the performance of flexgrid2vec with a set of state-of-the-art visual representation learning models on binary and multi-class image classification tasks.
1 code implementation • 30 Jul 2020 • Kyle K. Qin, Flora D. Salim, Yongli Ren, Wei Shao, Mark Heimann, Danai Koutra
In this paper, we propose a framework, called G-CREWE (Graph CompREssion With Embedding) to solve the network alignment problem.
no code implementations • 25 Jul 2020 • Aaqib Saeed, Flora D. Salim, Tanir Ozcelebi, Johan Lukkien
Federated learning provides a compelling framework for learning models from decentralized data, but conventionally, it assumes the availability of labeled samples, whereas on-device data are generally either unlabeled or cannot be annotated readily through user interaction.
1 code implementation • 24 Jul 2020 • Shohreh Deldari, Daniel V. Smith, Amin Sadri, Flora D. Salim
Extracting informative and meaningful temporal segments from high-dimensional wearable sensor data, smart devices, or IoT data is a vital preprocessing step in applications such as Human Activity Recognition (HAR), trajectory prediction, gesture recognition, and lifelogging.
Ranked #3 on
Change Point Detection
on TSSB
(Covering metric)
no code implementations • 27 May 2020 • Mohammad Saiedur Rahaman, Jonathan Liono, Yongli Ren, Jeffrey Chan, Shaw Kudo, Tim Rawling, Flora D. Salim
One of the core challenges in open-plan workspaces is to ensure a good level of concentration for the workers while performing their tasks.
no code implementations • 29 Apr 2020 • Nan Gao, Wei Shao, Mohammad Saiedur Rahaman, Jun Zhai, Klaus David, Flora D. Salim
The main purpose of HVAC, maintaining appropriate thermal comfort, is crucial for the best utilisation of energy usage.
no code implementations • 9 Feb 2020 • Xianjing Wang, Flora D. Salim, Yongli Ren, Piotr Koniusz
Point-of-Interest (POI) recommendation is one of the most important location-based services helping people discover interesting venues or services.
no code implementations • 24 Sep 2019 • Arian Prabowo, Piotr Koniusz, Wei Shao, Flora D. Salim
This paper introduces COLTRANE, ConvolutiOnaL TRAjectory NEtwork, a novel deep map inference framework which operates on GPS trajectories collected in various environments.
no code implementations • 9 Sep 2019 • Ang Li, Jiayi Guo, Huanrui Yang, Flora D. Salim, Yiran Chen
Our experiments on CelebA and LFW datasets show that the quality of the reconstructed images from the obfuscated features of the raw image is dramatically decreased from 0. 9458 to 0. 3175 in terms of multi-scale structural similarity.
no code implementations • 25 Jul 2019 • Shakila Khan Rumi, Flora D. Salim
The mobility dynamics inferred from Foursquare helps us understanding urban social events like crime In this paper, we propose a directed graph from the aggregated movement between regions using Foursquare data.
no code implementations • 8 Mar 2019 • Wei Shao, Flora D. Salim, Jeffrey Chan, Sean Morrison, Fabio Zambetta
Deep learning has been extended to a number of new domains with critical success, though some traditional orienteering problems such as the Travelling Salesman Problem (TSP) and its variants are not commonly solved using such techniques.