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Feng-Chen Liu

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#artificial intelligence Preprint Sep 2026

Beyond the Sycophancy Score: How Task, Model, and Pressure Shape LLM Yielding

Large language models (LLMs) often abandon a correct answer, or endorse a user's position, once the user pushes back. This behavior, called sycophancy, is usually reported as a single rate per model, which says little about when it happens or how a user can avoid it. We study the conditions that produce it with 103,939...

Guang Yang, Homa Hosseinmardi, Feng-Chen Liu et al. · 0 citations
#machine learning Preprint Sep 2026

CipherGenome: Homomorphic Inference for Genomic Mixture-of-Experts

Genome foundation models are growing into sparse mixture-of-experts (MoE) networks whose expert weights no longer fit on the machines that hold the sequences, yet sending a private genome to rented accelerators exposes it: we show that a single server hosting one expert recovers the input nucleotides with 99.8% top-1 a...

Guang Yang, Feng-Chen Liu · 0 citations
#machine learning Preprint Sep 2026

GenomeOcean Anywhere: Private WebGPU Inference for Genome MoEs

Genome foundation models are most useful where sequences are generated, yet the largest models need datacenter accelerators and a place to send private DNA. We ask whether a 15-billion-parameter genome mixture-of-experts (MoE) model can instead run on volunteers'web browsers, with the experts spread across many untrust...

Guang Yang, Feng-Chen Liu · 0 citations
Preprint Aug 2026

Asymmetric Phase Coding Video Watermarking

Existing video watermarking systems are symmetric: the party that can verify a mark holds the extractor weights or generator secret and can therefore also embed one. Benchmarks confirm the consequence, reporting that white-box forgery defeats all evaluated methods. We present a training-free video watermark that remove...

Guang Yang, Feng-Chen Liu · 0 citations
Open access Aug 2026

FP8 Inference in Genomic Foundation Models: Theoretical vs. Realized Speedups on GenomeOcean

FP8 largely preserves biological fidelity across the evaluated scales and inference regimes, while reducing GPU memory footprint at 4B scale and improving energy efficiency during autoregressive generation, however, realized throughput gains remain substantially below FP8’s theoretical 2× hardware ceiling.

Mutian Yu, Robert Egan, Feng-Chen Liu et al. · 0 citations
Book Open access Jul 2026

Radial Residual Frequency: A Semantically Aligned Benchmark and Spectral Detector for AI-Generated Images

A data-generation pipeline that captions real photographs with a vision–language model and regenerates them with modern text-to-image systems, producing semantically aligned real/synthetic pairs that isolate generative artifacts from image content is described.

Guang Yang, Qian Zhang, Feng-Chen Liu · 0 citations

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