Mingxiao Tu;Shuchang Ye;Hoijoon Jung;Andre Kyme;Jinman Kim
{"title":"SMPL-GPTexture: Scalable, Training-Free SMPL Texture Synthesis With World Knowledge Transfer From GPT via Geometry-Aware Projection","authors":"Mingxiao Tu;Shuchang Ye;Hoijoon Jung;Andre Kyme;Jinman Kim","doi":"10.1109/TAI.2026.3688439","DOIUrl":"https://doi.org/10.1109/TAI.2026.3688439","url":null,"abstract":"Texturing 3-D human avatars from natural-language prompts remains challenging because generated UV texture maps must be both high-quality and semantically consistent with the prompt. Prior work typically retrains generative adversarial or diffusion models on curated datasets, which constrain generalization to clothing, stylistic, and cultural variations present in those datasets. To address these limitations, we present SMPL-GPTexture, a training-free pipeline that leverages the rich world knowledge of a pretrained GPT model to synthesize SMPL human textures. Given a tailored natural-language prompt, GPT-4o generates geometry-consistent front/back views; we fit SMPL to each view, and invert-rasterize colors into canonical UV space with a geometry-aware view-quality weight, and close remaining gaps with diffusion-based inpainting. On a 550-prompt benchmark, SMPL-GPTexture achieves +17.6% CLIP similarity and +22.4% BLIP improvement over state-of-the-art text-to-texture methods while reducing visible seam artifacts. It generalizes to diverse scenarios such as fantasy avatars, stylized body art, and specialized uniforms without domain-specific fine-tuning. This facilitates the generation of high-quality textures that surpass current text-to-texture pipelines for fashion prototyping, AR telepresence, and digital asset generation. We open-source a UV texture map dataset that covers 23 artistic styles, 49 professions, 19 ethnicities, and 67 clothing descriptors, and a set of easily adaptable prompt templates that can be repurposed to generate any desired texture, fostering research on prompt-driven avatar appearance.","PeriodicalId":73305,"journal":{"name":"IEEE transactions on artificial intelligence","volume":"7 10","pages":"5551-5562"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11495526","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149097231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sidi Mohammed Alaoui;Khalifa Djemal;Amir Ali Feiz;Ehsan Sedgh Gooya
{"title":"Deep Learning-Guided Design of Optimal Sensor Networks for Accurate Pollutant Source Detection","authors":"Sidi Mohammed Alaoui;Khalifa Djemal;Amir Ali Feiz;Ehsan Sedgh Gooya","doi":"10.1109/TAI.2026.3687177","DOIUrl":"https://doi.org/10.1109/TAI.2026.3687177","url":null,"abstract":"Efficient sensor network design for atmospheric pollution source localization remains a major challenge in environmental monitoring. Selecting optimal sensor locations from numerous candidates is difficult under complex spatial and atmospheric conditions. Traditional methods, including trajectory-based metaheuristics and evolutionary algorithms, often entail high computational costs and limited scalability. To overcome these limitations, we propose the prediction of optimal sensor configurations (POSCs), a data-driven framework that reformulates sensor placement as a prediction problem. POSC operates in two stages. First, large-scale Gaussian plume simulations are performed to generate concentration maps. Then, a genetic algorithm (GA) is applied under varying atmospheric conditions to obtain multiple candidate optimal sensor configurations. The resulting supervised dataset pairs concentration fields with their corresponding optimal networks. Second, the data are used to predict new probability maps of sensor relevance, providing a framework that highlights the most informative sensor locations across scenarios through a convolutional self-attention residual network (CSAResNet). The model is first evaluated on its ability to predict probability maps of optimal sensor locations, reaching an AUC of 0.95. From these maps, a subset of sensors is selected, enabling source detection performance comparable to evolutionary methods (GA) while providing real-time prediction at negligible computational cost.","PeriodicalId":73305,"journal":{"name":"IEEE transactions on artificial intelligence","volume":"7 10","pages":"5445-5456"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149097406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Unifying Data, Memory, and Compute Efficiency in LLM Training: A Survey","authors":"Vanessa Schmidt;Huy Hoang Nguyen;Cédric Jung;Shirin Salehi;Anke Schmeink","doi":"10.1109/TAI.2026.3702625","DOIUrl":"https://doi.org/10.1109/TAI.2026.3702625","url":null,"abstract":"Resource constraints increasingly determine what can be trained, fine-tuned, and deployed in large language models (LLMs), yet efficiency is often studied through isolated techniques rather than as an interacting system of limits. This survey adopts a constraint-centric perspective and organizes recent progress around three coupled bottlenecks: 1) data efficiency (what to train on); 2) memory efficiency (how to fit training); and 3) compute budget awareness [when and where to spend floating-point operations (FLOPs)]. On the data axis, we review selection and pruning methods that maximize learning per token, ranging from scalable proxy signals based on learning dynamics to gradient- and influence-based scoring, as well as difficulty-aware and curriculum-style strategies. We highlight emerging evidence that different notions of “good data” dominate in different regimes, implying that optimal subsets depend on the task objective and resource budget rather than being universal. On the systems side, we show that GPU memory, not raw compute, is often the dominant bottleneck in fine-tuning, and that effective scaling requires jointly reducing weight storage, optimizer states, and activation memory rather than optimizing any single component in isolation. Beyond memory, we frame training and inference as compute-governed processes in which optimization, data selection, and decoding must explicitly account for finite FLOP budgets. We review evidence for compute-optimal allocation and stopping rules, where computation should be halted or reallocated once marginal performance gains fall below a budget-dependent threshold. Together, these results unify compute-aware data selection, scaling laws, and adaptive inference under a common principle of resource-conditioned decision-making.","PeriodicalId":73305,"journal":{"name":"IEEE transactions on artificial intelligence","volume":"7 10","pages":"5338-5358"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149097717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"MetaFusion: Instance-Aware Meta-Prompting and Token Refinement for VLMs Generalization","authors":"Mushui Liu;Fangtai Wu;Ziqian Lu;Zhao Wang;Yunlong Yu;Jungong Han;Zhongfei Zhang","doi":"10.1109/TAI.2026.3686093","DOIUrl":"https://doi.org/10.1109/TAI.2026.3686093","url":null,"abstract":"The rapid advancement of vision-language models (VLMs) has highlighted challenges in efficiently adapting these models to downstream tasks, where existing prompt-based fine-tuning (PFT) methods suffer from limited generalization to unseen classes due to homogeneous prompt representations and superficial prompt-feature interactions. To address these issues, we propose MetaFusion, a plug-and-play adapter module that jointly optimizes context-aware meta-prompt generation and feature refinement for enhanced visual-language alignment. Our method introduces a MetaNet to dynamically produce instance-specific meta-prompts from visual features, coupled with token aggregation guided with meta prompts (TAMPs) that semantically clusters and selects discriminative visual tokens through meta-prompt-guided grouping. In addition, a feature refinement module (FRM) fuses meta-prompts with visual features via cross-attention to amplify task-critical regions while suppressing background noise. Extensive experiments on 11 datasets demonstrate that MetaFusion significantly improves generalization capabilities when integrated with existing PFT frameworks, achieving state-of-the-art performance across zero-shot, few-shot, and domain-shift scenarios.","PeriodicalId":73305,"journal":{"name":"IEEE transactions on artificial intelligence","volume":"7 10","pages":"5404-5416"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149097224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Fair Recourse for All: Ensuring Individual and Group Fairness in Counterfactual Explanations","authors":"Fatima Ezzeddine;Obaida Ammar;Silvia Giordano;Omran Ayoub","doi":"10.1109/TAI.2026.3688207","DOIUrl":"https://doi.org/10.1109/TAI.2026.3688207","url":null,"abstract":"Explainable artificial intelligence (XAI) is becoming increasingly essential for enhancing the transparency of machine learning (ML) models. Among the various XAI techniques, counterfactual explanations (CFs) hold a pivotal role due to their ability to illustrate how changes in input features can alter an ML model’s decision, thereby offering actionable recourse to users. Ensuring that individuals with comparable attributes and those belonging to different protected groups (e.g., demographic) receive similar and actionable recourse options is essential for trustworthy and fair decision-making. In this work, we address this challenge directly by focusing on the generation of fair CFs. Specifically, we start by defining and formulating fairness at: 1) individual fairness, ensuring that similar individuals receive similar CFs; 2) group fairness, ensuring equitable CFs across different protected groups; and 3) hybrid fairness, which accounts for both individual and broader group-level fairness. We formulate the problem as an optimization task and propose a novel model-agnostic, reinforcement learning based approach to generate CFs that satisfy fairness constraints at both the individual and group levels, two objectives that are usually treated as orthogonal. As fairness metrics, we extend existing metrics commonly used for auditing ML models, such as equal choice of recourse and equal effectiveness across individuals and groups. We evaluate our approach on four benchmark datasets, showing that it effectively ensures individual and group fairness while preserving the quality of the generated CFs in terms of proximity and plausibility. Our work opens a broader discussion on hybrid fairness and its role and implications for XAI and beyond CFs.","PeriodicalId":73305,"journal":{"name":"IEEE transactions on artificial intelligence","volume":"7 10","pages":"5496-5511"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149097411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Fully Distributed Event-Triggered Secure Consensus of Multiagent Systems Under Hybrid Cyber-Attacks","authors":"Xiaoyang Liu;Xiangqin Kong;Shaofu Yang;Wenwu Yu","doi":"10.1109/TAI.2026.3685669","DOIUrl":"https://doi.org/10.1109/TAI.2026.3685669","url":null,"abstract":"This article addresses the secure consensus of multiagent systems under hybrid cyber-attacks. Deception attacks and denial-of-service (DoS) attacks are incorporated into an integrated hybrid cyber-attack model with an attack sequence, which aims to describe various attack strategies across different intervals. To avoid the overuse of communication resources and achieve consensus, a fully distributed dynamic event-triggered control protocol is proposed, and Zeno behavior is avoided as well. In addition, the overall attack sequence is divided into several subsequences, each corresponding to a distinct cyber-attack. For each cyber-attack, the maximum mismatch between its attack durations and affected durations is quantified accurately, which is beneficial for reducing the conservatism of consensus protocols. Finally, simulation examples about the unmanned intelligent vehicles and a multirobot system are presented to illustrate the validity of the proposed approach.","PeriodicalId":73305,"journal":{"name":"IEEE transactions on artificial intelligence","volume":"7 10","pages":"5393-5403"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149097483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"PersoBench: Benchmarking Personalized Response Generation in Large Language Models","authors":"Saleh Afzoon;Zahra Jamali;Usman Naseem;Amin Beheshti","doi":"10.1109/TAI.2026.3689823","DOIUrl":"https://doi.org/10.1109/TAI.2026.3689823","url":null,"abstract":"While large language models (LLMs) have exhibited impressive conversational capabilities, their proficiency in delivering personalized responses remains unclear. Although recent benchmarks automatically evaluate persona consistency in role-playing contexts using LLM-based judgment, the evaluation of personalization in response generation remains underexplored. To address this gap, we present an automated benchmarking pipeline, PersoBench, to evaluate the personalization ability of LLMs in persona-aware dialogue generation within a zero-shot setting. Our framework employs a structured pipeline comprising speaker-aware annotation, task-specific and context-driven prompt construction, response postprocessing, and automated evaluation across multiple dimensions of generation quality. In particular, the pipeline performs text preprocessing and speaker labeling, constructs structured prompts with task instructions and LLM roles, validates response format, and evaluates valid outputs across fluency, personalization, diversity, and coherence. We assess the performance of four open-source and four closed-source LLMs using well-known datasets and a range of explicit metrics. Our findings reveal that while LLMs excel at generating fluent and diverse responses, they are far from satisfactory in delivering personalized and coherent responses, considering both the conversation context and the provided personas.","PeriodicalId":73305,"journal":{"name":"IEEE transactions on artificial intelligence","volume":"7 10","pages":"5587-5596"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149097673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Relational Feature Modeling: Enhancing Predictive Learning Through Network-Based Features Augmentation","authors":"Ankur Kumar Singhal;Anurag Singh","doi":"10.1109/TAI.2026.3687508","DOIUrl":"https://doi.org/10.1109/TAI.2026.3687508","url":null,"abstract":"Feature representation and augmentation are central factors for improving predictive accuracy of the prediction model, particularly in domains constrained by limited data availability, such as agriculture and biological systems. Data scarcity, usually caused by annotation costs, variability in environmental factors, and the rarity of critical events, restricts the effectiveness of conventional models. While traditional prediction models perform well in data-rich scenarios, their performance degrades in small-data scenarios, leading to reduced predictive accuracy. To address limitations, a network-based feature augmentation prediction framework is proposed for small-data scenarios. An instance-specific parenclitic network is constructed for each data instance by modeling deviations among features, where nodes represent features and edges show the pairwise relationships. Further, three important structural descriptors edge count (global connectivity), entropy centrality (dispersion of influence), and clustering coefficient (local cohesiveness) are extracted and concatenated with the original feature vector to form an augmented representation. The augmented data are then modelled using a regularised multivariate Gaussian distribution, with class-conditional likelihoods. The framework is evaluated on three different datasets and performs better than the baseline methods, with accuracy improvements of 5.1%, 5.6%, and 4.0%. Additional analyses using residual and contour plots confirmed improved stability and interpretability, showing the proposed model is scalable and effective across domains with limited data.","PeriodicalId":73305,"journal":{"name":"IEEE transactions on artificial intelligence","volume":"7 10","pages":"5472-5481"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149096993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bertrand Frederick Boui A Boya;Lyudmila Klimentyevna Babenko;Jacques Kengne;Joseph Mvogo Ngono;Jean de Dieu Nkapkop;Arnaud Nanfak;Joseph Yves Effa
{"title":"Memristive Hopfield Bi-Neurons Under External Stimuli and Data Privacy Application","authors":"Bertrand Frederick Boui A Boya;Lyudmila Klimentyevna Babenko;Jacques Kengne;Joseph Mvogo Ngono;Jean de Dieu Nkapkop;Arnaud Nanfak;Joseph Yves Effa","doi":"10.1109/TAI.2025.3630118","DOIUrl":"https://doi.org/10.1109/TAI.2025.3630118","url":null,"abstract":"As medical imaging technology improves, protecting sensitive biomedical images during transmission and storage is becoming more important. Traditional encryption methods often struggle with efficiency and flexibility, especially when dealing with the large datasets typical in this field. This study explores using memristive Hopfield networks for encrypting biomedical images, leveraging their natural abilities for memory and pattern recognition. We examine how electromagnetic radiation and stimulating currents influence the behavior of these networks. Our results show that the model can reach multiple stable and unstable states, producing different patterns, including limit cycles and chaotic structures with various forms (like two-scroll, three-scroll, and four-scroll chaos). Notably, stimulating currents create uneven dynamic behavior. The model also reveals various patterns related to synaptic connections, which could provide insights into neurological diseases. To confirm our findings, we built a digital hardware device that successfully replicated these patterns. We also used a compressive sensing (CS) method to compress and encrypt biomedical images with the chaotic sequences generated by the model. Our experiments show that this encryption method is robust against various attacks with high key space, making it a good option for secure communication.","PeriodicalId":73305,"journal":{"name":"IEEE transactions on artificial intelligence","volume":"7 10","pages":"5359-5369"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149097386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Explainable AI for Mental Disorder Detection on Social Media: A Survey and Outlook","authors":"Yusif Ibrahimov;Tarique Anwar;Tommy Yuan","doi":"10.1109/TAI.2026.3688443","DOIUrl":"https://doi.org/10.1109/TAI.2026.3688443","url":null,"abstract":"Mental health (MH) is a complex global challenge. The widespread use of online social media (OSM) provides a rich source of data for supporting MH analytics. This article presents a comprehensive review of AI- and data-driven approaches for mental disorder detection (MDD) using OSM, with a particular focus on explainable artificial intelligence (XAI). We summarize traditional diagnostic practices and provide an integrated overview of modern deep learning models, emphasizing how their growing complexity increases the need for transparent and trustworthy explanations. We review a wide range of explainability techniques applied in this domain, including interpretable models, post-hoc attribution methods, attention- and graph-based explanations, and emerging LLM-driven approaches, and outline commonly used datasets and evaluation practices. Finally, we identify key challenges such as data limitations, bias, and the need for clinically meaningful explanations, and propose directions for future research. This survey offers a comprehensive foundation for developing explainable, reliable, and ethically informed MDD systems for social media.","PeriodicalId":73305,"journal":{"name":"IEEE transactions on artificial intelligence","volume":"7 10","pages":"5299-5319"},"PeriodicalIF":0.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149097532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}