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Zhikai Li

14 accepted papers

2026

Efficient-SAM2: Accelerating SAM2 with Object-Aware Visual Encoding and Memory Retrieval

ICLR 2026poster

Segment Anything Model 2 (SAM2) shows excellent performance in video object segmentation tasks; however, the heavy computational burden hinders its application in real-time video processing. Although there have been efforts to improve the efficiency of SAM2, most of them focus on retraining a lightw…

Cited by 0SourceScholar
2026

K-Sort Eval: Efficient Preference Evaluation for Visual Generation via Corrected VLM-as-a-Judge

ICLR 2026poster

The rapid development of visual generative models raises the need for more scalable and human-aligned evaluation methods. While the crowdsourced Arena platforms offer human preference assessments by collecting human votes, they are costly and time-consuming, inherently limiting their scalability. Le…

Cited by 0SourcecodeScholar
2026

OSAQ: Outlier Self-Absorption for Accurate Low-bit LLM Quantization

ICML 2026poster

Large Language Models (LLMs) have demonstrated remarkable capabilities in understanding and generation tasks. However, their massive parameter scale leads to significant resource consumption and latency during inference. Post-training weight-only quantization offers a promising solution by reducing …

Cited by 0SourceScholar
2026

PTQ4ARVG: Post-Training Quantization for AutoRegressive Visual Generation Models

ICLR 2026poster

AutoRegressive Visual Generation (ARVG) models retain an architecture compatible with language models, while achieving performance comparable to diffusion-based models. Quantization is commonly employed in neural networks to reduce model size and computational latency. However, applying quantization…

Cited by 0SourcecodeScholar
2026

SAQ-SAM: Semantically-Aligned Quantization for Segment Anything Model

AAAI 2026technical

Segment Anything Model (SAM) exhibits remarkable zero-shot segmentation capability; however, its prohibitive computational costs make edge deployment challenging. Although post-training quantization (PTQ) offers a promising compression solution, existing methods yield unsatisfactory results when app

Cited by 0SourcePDFScholar
2025

A Stitch in Time Saves Nine: Small VLM is a Precise Guidance for Accelerating Large VLMs

CVPR 2025poster

Vision-language models (VLMs) have shown remarkable success across various multi-modal tasks, yet large VLMs encounter significant efficiency challenges due to processing numerous visual tokens. A promising approach to accelerating large VLM inference is using partial information, such as attention…

2025

K-Sort Arena: Efficient and Reliable Benchmarking for Generative Models via K-wise Human Preferences

CVPR 2025poster

The rapid advancement of visual generative models necessitates efficient and reliable evaluation methods. Arena platform, which gathers user votes on model comparisons, can rank models with human preferences. However, traditional Arena methods, while established, require an excessive number of compa…

Cited by 4SourcePDFScholar
2025

Unsupervised Learning for Class Distribution Mismatch

ICML 2025poster

Class distribution mismatch (CDM) refers to the discrepancy between class distributions in training data and target tasks. Previous methods address this by designing classifiers to categorize classes known during training, while grouping unknown or new classes into an "other" category. However, they…

2023

Hot-NetVLAD: Learning Discriminatory Key Points for Visual Place Recognition

RA-L 2023

Hot-NetVLAD implements a hot-spot detector on a learned local key-patch descriptor algorithm for Visual Place Recognition (VPR), thereby greatly cutting down the size of features extracted. The hot-spots pinpoint which regions are crucial for comparison when performing VPR. As hot-spots land on only

Cited by 11SourceScholar
2023

RepQ-ViT: Scale Reparameterization for Post-Training Quantization of Vision Transformers

ICCV 2023poster

Post-training quantization (PTQ), which only requires a tiny dataset for calibration without end-to-end retraining, is a light and practical model compression technique. Recently, several PTQ schemes for vision transformers (ViTs) have been presented; unfortunately, they typically suffer from non-tr…

Cited by 105PDFcodeScholar
2022

Patch Similarity Aware Data-Free Quantization for Vision Transformers

ECCV 2022poster

"Vision transformers have recently gained great success on various computer vision tasks; nevertheless, their high model complexity makes it challenging to deploy on resource-constrained devices. Quantization is an effective approach to reduce model complexity, and data-free quantization, which can…

2020

Online Localization with Imprecise Floor Space Maps using Stochastic Gradient Descent

IROS 2020poster

Many indoor spaces have constantly changing layouts and may not be mapped by an autonomous vehicle, yet maps such as floor plans or evacuation maps of these places are common. We propose a method for an autonomous robot to localize itself on such maps with inconsistent scale using Stochastic Gradien…

Cited by 16SourceScholar