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Lizhao Liu

4 accepted papers

2026

FAM: Fine-Grained Alignment Matters in Multimodal Embedding Learning with Large Vision-Language Models

AAAI 2026technical

Learning multimodal representation is a fundamental task that supports a wide range of applications such as visual-text retrieval. While pioneering approaches e.g., CLIP paves the way by learning separated encoders for different modalities, they struggle to model complex interactions between modalit

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2024

Prioritized Semantic Learning for Zero-shot Instance Navigation

ECCV 2024poster

"We study zero-shot instance navigation, in which the agent navigates to a specific object without using object annotations for training. Previous object navigation approaches apply the image-goal navigation () task (go to the location of an image) for pretraining, and transfer the agent to achieve…

2023

CPCM: Contextual Point Cloud Modeling for Weakly-supervised Point Cloud Semantic Segmentation

ICCV 2023poster

We study the task of weakly-supervised point cloud semantic segmentation with sparse annotations (e.g., less than 0.1% points are labeled), aiming to reduce the expensive cost of dense annotations. Unfortunately, with extremely sparse annotated points, it is very difficult to extract both contextual…

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2022

DAS: Densely-Anchored Sampling for Deep Metric Learning

ECCV 2022poster

"Deep Metric Learning (DML) serves to learn an embedding function to project semantically similar data into nearby embedding space and plays a vital role in many applications, such as image retrieval and face recognition. However, the performance of DML methods often highly depends on sampling metho…