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In cold-start scenarios, the scarcity of collaborative signals for new items exacerbates the Matthew effect, which undermines platform diversity and remains a persistent challenge in real-world recommender systems. Existing methods…

Information Retrieval · Computer Science 2026-03-25 Hai Zhu , Yantao Yu , Lei Shen , Bing Wang , Xiaoyi Zeng

Generative Adversarial Networks (GANs) are powerful models able to synthesize data samples closely resembling the distribution of real data, yet the diversity of those generated samples is limited due to the so-called mode collapse…

Computer Vision and Pattern Recognition · Computer Science 2023-06-26 Jan Dubiński , Kamil Deja , Sandro Wenzel , Przemysław Rokita , Tomasz Trzciński

The significant variability in cell size and shape continues to pose a major obstacle in computer-assisted cancer detection on gigapixel Whole Slide Images (WSIs), due to cellular heterogeneity. Current CNN-Transformer hybrids use static…

Image and Video Processing · Electrical Eng. & Systems 2026-03-24 Gia Huy Thai , Hoang-Nguyen Vu , Anh-Minh Phan , Quang-Thinh Ly , Tram Dinh , Thi-Ngoc-Truc Nguyen , Nhat Ho

We propose a novel surrogate-assisted Evolutionary Algorithm for solving expensive combinatorial optimization problems. We integrate a surrogate model, which is used for fitness value estimation, into a state-of-the-art P3-like variant of…

Neural and Evolutionary Computing · Computer Science 2021-04-19 Arkadiy Dushatskiy , Tanja Alderliesten , Peter A. N. Bosman

We propose EAGLE update rule, a novel optimization method that accelerates loss convergence during the early stages of training by leveraging both current and previous step parameter and gradient values. The update algorithm estimates…

Machine Learning · Computer Science 2025-02-04 Takumi Fujimoto , Hiroaki Nishi

Systems analysis students increasingly use Generative AI, yet current pedagogy lacks systematic approaches for teaching responsible AI orchestration that fosters critical thinking whilst meeting educational outcomes. Students risk accepting…

Human-Computer Interaction · Computer Science 2025-11-25 Mahmoud Elkhodr , Ergun Gide

Long-term memory is becoming a central bottleneck for language agents. Exsting RAG and GraphRAG systems largely treat memory graphs as static retrieval middleware, which limits their ability to recover complete evidence chains from partial…

Artificial Intelligence · Computer Science 2026-05-13 Juntong Wang , Haoyue Zhao , guanghui Pan , Xiyuan Wang , Yanbo Wang , Qiyan Deng , Muhan Zhang

In this paper, we give an in-depth analysis on the mathematical problem formulations and the probabilistic optimization explorations for some of the key components in Transformer model [33] in the field of generative AI. We explore and…

Machine Learning · Computer Science 2024-10-25 Fulu Li

Continuous valence-arousal estimation in real-world environments is challenging due to inconsistent modality reliability and interaction-dependent variability in audio-visual signals. Existing approaches primarily focus on modeling temporal…

Multimedia · Computer Science 2026-03-13 Yubeen Lee , Sangeun Lee , Junyeop Cha , Eunil Park

Training Large Language Models (LLMs) for reasoning tasks is increasingly driven by Reinforcement Learning with Verifiable Rewards (RLVR), where Proximal Policy Optimization (PPO) provides a principled framework for stable policy updates.…

Machine Learning · Computer Science 2026-01-13 Xue Gong , Qi Yi , Ziyuan Nan , Guanhua Huang , Kejiao Li , Yuhao Jiang , Ruibin Xiong , Zenan Xu , Jiaming Guo , Shaohui Peng , Bo Zhou

Ensemble learning boosts performance by aggregating predictions from multiple base learners. A core challenge is balancing individual learner accuracy with diversity. Traditional methods like Bagging and Boosting promote diversity through…

Machine Learning · Computer Science 2025-08-08 Rui Zou

A key aspect of Safe Reinforcement Learning (Safe RL) involves estimating the constraint condition for the next policy, which is crucial for guiding the optimization of safe policy updates. However, the existing Advantage-based Estimation…

Machine Learning · Computer Science 2024-12-17 Juntao Dai , Yaodong Yang , Qian Zheng , Gang Pan

Search-Augmented Generative Engines (SAGE) have emerged as a new paradigm for information access, bridging web-scale retrieval with generative capabilities to deliver synthesized answers. This shift has fundamentally reshaped how web…

Information Retrieval · Computer Science 2026-02-13 Sunghwan Kim , Wooseok Jeong , Serin Kim , Sangam Lee , Dongha Lee

Software vulnerabilities are a primary threat to modern infrastructure. While static analysis and Graph Neural Networks have long served as the foundation for vulnerability detection, the emergence of Large Language Models (LLMs) has…

Cryptography and Security · Computer Science 2026-04-22 Zhengyang Shan , Xu Qian , Jiayun Xin , Minghui Xu , Yue Zhang , Zhen Yang , Hao Wu , Xiuzhen Cheng

Large Language Model (LLM)-based agents have demonstrated remarkable capabilities in complex reasoning and multi-turn interactions but struggle to continuously improve and adapt when deployed in new environments. One promising approach is…

Artificial Intelligence · Computer Science 2026-03-11 Jiongxiao Wang , Qiaojing Yan , Yawei Wang , Yijun Tian , Soumya Smruti Mishra , Zhichao Xu , Megha Gandhi , Panpan Xu , Lin Lee Cheong

Conventional Generative Adversarial Networks (GANs) for text generation tend to have issues of reward sparsity and mode collapse that affect the quality and diversity of generated samples. To address the issues, we propose a novel…

Computation and Language · Computer Science 2020-02-13 Wangchunshu Zhou , Tao Ge , Ke Xu , Furu Wei , Ming Zhou

In this paper, we study the content-aware layout generation problem, which aims to automatically generate layouts that are harmonious with a given background image. Existing methods usually deal with this task with a single-step reasoning…

Computer Vision and Pattern Recognition · Computer Science 2025-10-20 Haoran Wang , Bo Zhao , Jinghui Wang , Hanzhang Wang , Huan Yang , Wei Ji , Hao Liu , Xinyan Xiao

Sequential recommendation (SR) is traditionally formulated as next-item prediction over a chronological sequence of interacted items. Although recent generative recommendation (GR) methods introduce new machinery, such as semantic IDs,…

Information Retrieval · Computer Science 2026-05-19 Yingyi Zhang , Junyi Li , Yejing Wang , Wenlin Zhang , Xiaowei Qian , Sheng Zhang , Yue Feng , Yichao Wang , Yong Liu , Xiangyu Zhao , Xianneng Li

Self-evolving language-model agents must decide what to learn next and how to preserve what they have learned across iterations. Existing systems typically carry this cross-iteration knowledge as natural-language feedback, flat episodic…

Artificial Intelligence · Computer Science 2026-05-12 Ruiyi Yang , Zechen Li , Hao Xue , Imran Razzak , Flora D. Salim

Effective mental health counseling is a complex, theory-driven process requiring the simultaneous integration of psychological frameworks, real-time distress signals, and strategic intervention planning. This level of clinical reasoning is…

Computation and Language · Computer Science 2026-04-30 Eliya Naomi Aharon , Meytal Grimland , Avi Segal , Loona Ben Dayan , Inbar Shenfeld , Yossi Levi Belz , Kobi Gal