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Jiaxuan Chen

9 accepted papers

2026

CareCom: Generative Image Composition with Calibrated Reference Features

AAAI 2026technical

Image composition aims to seamlessly insert foreground object into background. Despite the huge progress in generative image composition, the existing methods are still struggling with simultaneous detail preservation and foreground pose/view adjustment. To address this issue, we extend the existin

Cited by 0SourcePDFScholar
2026

FedBRICK: Structural Bias Aware Heterogeneous Foundation Model Federated Tuning

AAAI 2026technical

Model-heterogeneous federated tuning (MHFT) enables the privacy-preserving fine-tuning of foundation models in heterogeneous systems by allowing clients and the server to adopt different model architectures. Depth partial training—where each client updates only a subset of the model

Cited by 0SourcePDFScholar
2026

LLM-based Embeddings: Attention Values Encode Sentence Semantics Better Than Hidden States

ICML 2026poster

Sentence representations are foundational to many Natural Language Processing (NLP) applications. While recent methods leverage Large Language Models (LLMs) to derive sentence representations, most rely on final-layer hidden states, which are optimized for next-token prediction and thus often fail t…

Cited by 0SourceScholar
2026

Reducing Semantic Mismatch in Brain-to-Text Decoding Through Personalized Multimodal Masking

ICLR 2026poster

The rapid progress of large vision-language models (VLMs), such as CLIP, has spurred the development of a wide range of neural decoding frameworks. Nevertheless, most existing approaches still suffer from semantic mismatches during representational alignment. This challenge may stem from the fact th…

Cited by 0SourceScholar
2026

Weaving Graph over Tokens: Contextualizing Structured Sequences for LLMs

ICML 2026poster

Generative Graph Language Models (GLMs) must reconcile topology with causal language modeling. Linearization obscures multi-hop connectivity, while encoder-based methods bottleneck token-level reasoning during generation. Viewing context modeling as a form of message passing, we introduce **Weaver**…

Cited by 0SourceScholar
2025

Bridging the Gap between Brain and Machine in Interpreting Visual Semantics: Towards Self-adaptive Brain-to-Text Decoding

ICCV 2025poster

Neural decoding has recently made significant progress in reconstructing images and text from brain activity, yet seeking biologically valid semantic alignment between artificial models and the brain remains challenging. Large pre-trained foundation models such as CLIP excel at capturing rich semant…

2024

Bridging the Semantic Latent Space between Brain and Machine: Similarity Is All You Need

AAAI 2024technical

How our brain encodes complex concepts has been a longstanding mystery in neuroscience. The answer to this problem can lead to new understandings about how the brain retrieves information in large-scale data with high efficiency and robustness. Neuroscience studies suggest the brain represents conce…

Cited by 5SourcePDFScholar
2023

Rethinking Visual Reconstruction: Experience-Based Content Completion Guided by Visual Cues

ICML 2023poster

Decoding seen images from brain activities has been an absorbing field. However, the reconstructed images still suffer from low quality with existing studies. This can be because our visual system is not like a camera that ''remembers'' every pixel. Instead, only part of the information can be perce…

Cited by 7SourcePDFScholar