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Controlled text generation tasks such as unsupervised text style transfer have increasingly adopted the use of Reinforcement Learning (RL). A major challenge in applying RL to such tasks is the sparse reward, which is available only after…

Computation and Language · Computer Science 2022-04-19 Bhargav Upadhyay , Akhilesh Sudhakar , Arjun Maheswaran

We propose a Reinforcement Learning framework for sparse indirect control of large-scale multi-agent systems, where few controlled agents shape the collective behavior of many uncontrolled agents. The approach addresses this multi-scale…

Systems and Control · Electrical Eng. & Systems 2026-04-27 Luigi Catello , Italo Napolitano , Davide Salzano , Mario di Bernardo

The rapid growth in the size of deep learning models strains the capabilities of traditional dense computation paradigms. Leveraging sparse computation has become increasingly popular for training and deploying large-scale models, but…

Machine Learning · Computer Science 2024-06-21 Bobby Yan , Alexander J. Root , Trevor Gale , David Broman , Fredrik Kjolstad

Recommender system models often represent various sparse features like users, items, and categorical features via embeddings. A standard approach is to map each unique feature value to an embedding vector. The size of the produced embedding…

Information Retrieval · Computer Science 2020-08-26 Wang-Cheng Kang , Derek Zhiyuan Cheng , Ting Chen , Xinyang Yi , Dong Lin , Lichan Hong , Ed H. Chi

Efficient and effective learning is one of the ultimate goals of the deep reinforcement learning (DRL), although the compromise has been made in most of the time, especially for the application of robot manipulations. Learning is always…

Machine Learning · Computer Science 2020-03-06 Yongle Luo , Kun Dong , Lili Zhao , Zhiyong Sun , Chao Zhou , Bo Song

Recent advances in motion diffusion models have led to remarkable progress in diverse motion generation tasks, including text-to-motion synthesis. However, existing approaches represent motions as dense frame sequences, requiring the model…

Computer Vision and Pattern Recognition · Computer Science 2025-05-13 Jinseok Bae , Inwoo Hwang , Young Yoon Lee , Ziyu Guo , Joseph Liu , Yizhak Ben-Shabat , Young Min Kim , Mubbasir Kapadia

Active learning reduces labeling costs by selecting samples that maximize information gain. A dominant framework, Query-by-Committee (QBC), typically relies on perturbation-based diversity by inducing model disagreement through random…

Machine Learning · Statistics 2026-03-25 Simon D. Nguyen , Hayden McTavish , Kentaro Hoffman , Cynthia Rudin , Tyler H. McCormick

Recommendation systems (RecSys) are designed to connect users with relevant items from a vast pool of candidates while aligning with the business goals of the platform. A typical industrial RecSys is composed of two main stages, retrieval…

Information Retrieval · Computer Science 2024-12-19 Chi Liu , Jiangxia Cao , Rui Huang , Kuo Cai , Weifeng Ding , Qiang Luo , Kun Gai , Guorui Zhou

Decision trees are popular Classification and Regression tools and, when small-sized, easy to interpret. Traditionally, a greedy approach has been used to build the trees, yielding a very fast training process; however, controlling sparsity…

Optimization and Control · Mathematics 2020-02-24 Rafael Blanquero , Emilio Carrizosa , Cristina Molero-Río , Dolores Romero Morales

Autoencoder recommenders have recently shown state-of-the-art performance in the recommendation task due to their ability to model non-linear item relationships effectively. However, existing autoencoder recommenders use fully-connected…

Information Retrieval · Computer Science 2020-08-19 Farhan Khawar , Leonard Kin Man Poon , Nevin Lianwen Zhang

Session-based recommendation (SR) has gained increasing attention in recent years. Quite a great amount of studies have been devoted to designing complex algorithms to improve recommendation performance, where deep learning methods account…

Social and Information Networks · Computer Science 2022-12-16 Huizi Wu , Hui Fang , Zhu Sun , Cong Geng , Xinyu Kong , Yew-Soon Ong

Text-to-speech (TTS) models have achieved remarkable naturalness in recent years, yet like most deep neural models, they have more parameters than necessary. Sparse TTS models can improve on dense models via pruning and extra retraining, or…

Audio and Speech Processing · Electrical Eng. & Systems 2024-06-04 Perry Lam , Huayun Zhang , Nancy F. Chen , Berrak Sisman , Dorien Herremans

Recommender-systems research has accelerated model and evaluation advances, yet largely neglects automating the research process itself. We argue for a shift from narrow AutoRecSys tools -- focused on algorithm selection and hyper-parameter…

Information Retrieval · Computer Science 2025-10-22 Joeran Beel , Bela Gipp , Tobias Vente , Moritz Baumgart , Philipp Meister

Traditional Remote Sensing Foundation models (RSFMs) are pre-trained with a data-centralized paradigm, through self-supervision on large-scale curated remote sensing data. For each institution, however, pre-training RSFMs with limited data…

Computer Vision and Pattern Recognition · Computer Science 2025-03-17 Jieyi Tan , Chengwei Zhang , Bo Dang , Yansheng Li

Referring Image Segmentation (RIS) is a challenging task that aims to segment objects in an image based on natural language expressions. While prior studies have predominantly concentrated on improving vision-language interactions and…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Ming Dai , Wenxuan Cheng , Jiang-jiang Liu , Sen Yang , Wenxiao Cai , Yanpeng Sun , Wankou Yang

Recent advancements in recommendation systems have shifted towards more comprehensive and personalized recommendations by utilizing large language models (LLM). However, effectively integrating LLM's commonsense knowledge and reasoning…

Information Retrieval · Computer Science 2023-08-22 Zhixuan Chu , Hongyan Hao , Xin Ouyang , Simeng Wang , Yan Wang , Yue Shen , Jinjie Gu , Qing Cui , Longfei Li , Siqiao Xue , James Y Zhang , Sheng Li

Sparse neural networks are becoming increasingly important as the field seeks to improve the performance of existing models by scaling them up, while simultaneously trying to reduce power consumption and computational footprint.…

Machine Learning · Computer Science 2021-06-08 Siddhant M. Jayakumar , Razvan Pascanu , Jack W. Rae , Simon Osindero , Erich Elsen

Reinforcement learning has recently been used to enhance index structures, giving rise to reinforcement learning-enhanced spatial indices (RLESIs) that aim to improve query efficiency during index construction. However, their practical…

Databases · Computer Science 2025-12-15 Guanli Liu , Renata Borovica-Gajic , Hai Lan , Zhifeng Bao

Looped transformers scale computational depth without increasing parameter count by repeatedly applying a shared transformer block and can be used for iterative refinement, where each loop rewrites a full fixed-size prediction in parallel.…

Machine Learning · Computer Science 2026-04-22 Chris Cameron , Wangzheng Wang , Nikita Ivanov , Ashmita Bhattacharyya , Didier Chételat , Yingxue Zhang

Federated learning is a distributed, privacy-aware learning scenario which trains a single model on data belonging to several clients. Each client trains a local model on its data and the local models are then aggregated by a central party.…

Machine Learning · Computer Science 2020-01-01 Hesham Mostafa
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