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🏢 University of Virginia

Unveiling User Satisfaction and Creator Productivity Trade-Offs in Recommendation Platforms
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AI Theory Optimization 🏢 University of Virginia
Recommendation algorithms on UGC platforms face a critical trade-off: prioritizing user satisfaction reduces creator engagement, jeopardizing long-term content diversity. This research introduces a ga…
Transformers as Game Players: Provable In-context Game-playing Capabilities of Pre-trained Models
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AI Generated Machine Learning Reinforcement Learning 🏢 University of Virginia
Pre-trained transformers can provably learn to play games near-optimally using in-context learning, offering theoretical guarantees for both decentralized and centralized settings.
Mixture of Demonstrations for In-Context Learning
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Natural Language Processing Large Language Models 🏢 University of Virginia
MoD, a novel Mixture of Demonstrations framework, enhances in-context learning by partitioning demonstration pools and employing expert-wise training, achieving state-of-the-art performance.
Learning Group Actions on Latent Representations
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Computer Vision Image Generation 🏢 University of Virginia
This paper proposes a novel method to model group actions within autoencoders by learning these actions in the latent space, enhancing model versatility and improving performance in various real-world…
Efficient Prompt Optimization Through the Lens of Best Arm Identification
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AI Generated Natural Language Processing Large Language Models 🏢 University of Virginia
TRIPLE: Efficient prompt optimization using fixed-budget best-arm identification.
Easy Regional Contrastive Learning of Expressive Fashion Representations
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Multimodal Learning Vision-Language Models 🏢 University of Virginia
E2, a novel regional contrastive learning method, enhances vision-language models for expressive fashion representations by explicitly attending to fashion details with minimal additional parameters, …
Corruption-Robust Linear Bandits: Minimax Optimality and Gap-Dependent Misspecification
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AI Theory Robustness 🏢 University of Virginia
This paper presents novel algorithms for linear bandits that are robust to corrupted rewards, achieving minimax optimality and optimal scaling for gap-dependent misspecification, extending to reinforc…
Constrained Synthesis with Projected Diffusion Models
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AI Generated AI Applications Robotics 🏢 University of Virginia
Projected Diffusion Models (PDM) revolutionizes generative modeling by directly incorporating constraints into the sampling process, ensuring high-fidelity outputs that strictly adhere to predefined c…
Are Language Models Actually Useful for Time Series Forecasting?
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AI Applications Finance 🏢 University of Virginia
Popular large language model (LLM)-based time series forecasting methods perform no better than simpler alternatives, often worse, and require vastly more compute.