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Medical image segmentation is a fundamental yet challenging task due to the arduous process of acquiring large volumes of high-quality labeled data from experts. Contrastive learning offers a promising but still problematic solution to this…

Computer Vision and Pattern Recognition · Computer Science 2025-02-14 Shuang Zeng , Lei Zhu , Xinliang Zhang , Micky C Nnamdi , Wenqi Shi , J Ben Tamo , Qian Chen , Hangzhou He , Lujia Jin , Zifeng Tian , Qiushi Ren , Zhaoheng Xie , Yanye Lu

We introduce MOSAIC (Masked Objective with Selective Adaptation for In-domain Contrastive learning), a multi-stage framework for domain adaptation of text embedding models that incorporates joint domain-specific masked supervision. Our…

Computation and Language · Computer Science 2026-01-30 Vera Pavlova , Mohammed Makhlouf

Self-supervised learning has recently gained growing interest in molecular modeling for scientific tasks such as AI-assisted drug discovery. Current studies consider leveraging both 2D and 3D molecular structures for representation…

Machine Learning · Computer Science 2023-10-10 Qiying Yu , Yudi Zhang , Yuyan Ni , Shikun Feng , Yanyan Lan , Hao Zhou , Jingjing Liu

Deep generative models have recently been applied to molecule design. If the molecules are encoded in linear SMILES strings, modeling becomes convenient. However, models relying on string representations tend to generate invalid samples and…

Machine Learning · Computer Science 2020-10-20 Bo Pang , Tian Han , Ying Nian Wu

We present a novel multimodal language model approach for predicting molecular properties by combining chemical language representation with physicochemical features. Our approach, MULTIMODAL-MOLFORMER, utilizes a causal multistage feature…

Despite the well-developed cut-edge representation learning for language, most language representation models usually focus on specific levels of linguistic units. This work introduces universal language representation learning, i.e.,…

Computation and Language · Computer Science 2021-06-01 Yian Li , Hai Zhao

Accurate molecular property prediction is a critical challenge with wide-ranging applications in chemistry, materials science, and drug discovery. Molecular representation methods, including fingerprints and graph neural networks (GNNs),…

Machine Learning · Computer Science 2025-08-13 Jiaxin Ju , Yizhen Zheng , Huan Yee Koh , Can Wang , Shirui Pan

Modality representation learning is an important problem for multimodal sentiment analysis (MSA), since the highly distinguishable representations can contribute to improving the analysis effect. Previous works of MSA have usually focused…

Multimedia · Computer Science 2023-01-31 Peipei Liu , Xin Zheng , Hong Li , Jie Liu , Yimo Ren , Hongsong Zhu , Limin Sun

Recent multimodal embedding approaches leveraging multimodal large language models (MLLMs) fine-tuned with contrastive learning (CL) have shown promising results, yet the underlying reasons behind their superiority remain underexplored.…

Computation and Language · Computer Science 2025-10-14 Chenghao Xiao , Hou Pong Chan , Hao Zhang , Weiwen Xu , Mahani Aljunied , Yu Rong

In this work, we present Multi-Level Contrastive Learning for Dense Prediction Task (MCL), an efficient self-supervised method for learning region-level feature representation for dense prediction tasks. Our method is motivated by the three…

Computer Vision and Pattern Recognition · Computer Science 2023-04-05 Qiushan Guo , Yizhou Yu , Yi Jiang , Jiannan Wu , Zehuan Yuan , Ping Luo

Although Large Language Models (LLMs) excel in reasoning and generation for language tasks, they are not specifically designed for multimodal challenges. Training Multimodal Large Language Models (MLLMs), however, is resource-intensive and…

Computer Vision and Pattern Recognition · Computer Science 2025-02-18 Yuqi Pang , Bowen Yang , Haoqin Tu , Yun Cao , Zeyu Zhang

In this work, we propose a simple transformer-based baseline for multimodal molecular representation learning, integrating three distinct modalities: SMILES strings, 2D graph representations, and 3D conformers of molecules. A key aspect of…

Machine Learning · Computer Science 2024-10-25 Andrei Manolache , Dragos Tantaru , Mathias Niepert

Multimodal retrieval, which seeks to retrieve relevant content across modalities such as text or image, supports applications from AI search to contents production. Despite the success of separate-encoder approaches like CLIP align…

Computation and Language · Computer Science 2025-10-20 Qiyu Wu , Shuyang Cui , Satoshi Hayakawa , Wei-Yao Wang , Hiromi Wakaki , Yuki Mitsufuji

Large Language Models (LLMs) with their strong task-handling capabilities have shown remarkable advancements across a spectrum of fields, moving beyond natural language understanding. However, their proficiency within the chemistry domain…

Computer Vision and Pattern Recognition · Computer Science 2026-02-02 Khiem Le , Zhichun Guo , Kaiwen Dong , Xiaobao Huang , Bozhao Nan , Roshni Iyer , Xiangliang Zhang , Olaf Wiest , Wei Wang , Ting Hua , Nitesh V. Chawla

Molecular property prediction is crucial for drug discovery and materials science, yet existing approaches suffer from limited interpretability, poor cross-task generalization, and lack of chemical reasoning capabilities. Traditional…

Machine Learning · Computer Science 2025-10-20 Jiaxi Zhuang , Yaorui Shi , Jue Hou , Yunong He , Mingwei Ye , Mingjun Xu , Yuming Su , Linfeng Zhang , Ying Qian , Linfeng Zhang , Guolin Ke , Hengxing Cai

We perform a comprehensive benchmarking of contrastive frameworks for learning multimodal representations in the medical domain. Through this study, we aim to answer the following research questions: (i) How transferable are general-domain…

Computer Vision and Pattern Recognition · Computer Science 2024-06-12 Shuvendu Roy , Yasaman Parhizkar , Franklin Ogidi , Vahid Reza Khazaie , Michael Colacci , Ali Etemad , Elham Dolatabadi , Arash Afkanpour

Despite the success of vision-language models in various generative tasks, obtaining high-quality semantic representations for products and user intents is still challenging due to the inability of off-the-shelf models to capture nuanced…

Information Retrieval · Computer Science 2025-11-07 Omkar Gurjar , Kin Sum Liu , Praveen Kolli , Utsaw Kumar , Mandar Rahurkar

Multi-modal affective computing aims to automatically recognize and interpret human attitudes from diverse data sources such as images and text, thereby enhancing human-computer interaction and emotion understanding. Existing approaches…

Computation and Language · Computer Science 2025-06-10 Yuanhe Tian , Pengsen Cheng , Guoqing Jin , Lei Zhang , Yan Song

In drug-discovery-related tasks such as virtual screening, machine learning is emerging as a promising way to predict molecular properties. Conventionally, molecular fingerprints (numerical representations of molecules) are calculated…

Machine Learning · Computer Science 2019-11-13 Shion Honda , Shoi Shi , Hiroki R. Ueda

Masked image modeling (MIM) has achieved promising results on various vision tasks. However, the limited discriminability of learned representation manifests there is still plenty to go for making a stronger vision learner. Towards this…

Computer Vision and Pattern Recognition · Computer Science 2024-01-30 Zhicheng Huang , Xiaojie Jin , Chengze Lu , Qibin Hou , Ming-Ming Cheng , Dongmei Fu , Xiaohui Shen , Jiashi Feng