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The primary objective of Optical Chemical Structure Recognition is to identify chemical structure images into corresponding markup sequences. However, the complex two-dimensional structures of molecules, particularly those with rings and…

Computer Vision and Pattern Recognition · Computer Science 2025-02-04 Qikai Chang , Mingjun Chen , Changpeng Pi , Pengfei Hu , Zhenrong Zhang , Jiefeng Ma , Jun Du , Baocai Yin , Jinshui Hu

AI models for drug discovery and chemical literature mining must interpret molecular images and generate outputs consistent with 3D geometry and stereochemistry. Most molecular language models rely on strings or graphs, while…

Computer Vision and Pattern Recognition · Computer Science 2026-01-22 Jing Lan , Hexiao Ding , Hongzhao Chen , Yufeng Jiang , Nga-Chun Ng , Gwing Kei Yip , Gerald W. Y. Cheng , Yunlin Mao , Jing Cai , Liang-ting Lin , Jung Sun Yoo

Multimodal Large Language Models (mLLMs) are trained on a large amount of text-image data. While most mLLMs are trained on caption-like data only, Alayrac et al. (2022) showed that additionally training them on interleaved sequences of text…

Computation and Language · Computer Science 2025-05-30 Matthieu Futeral , Armel Zebaze , Pedro Ortiz Suarez , Julien Abadji , Rémi Lacroix , Cordelia Schmid , Rachel Bawden , Benoît Sagot

The integration of molecular and natural language representations has emerged as a focal point in molecular science, with recent advancements in Language Models (LMs) demonstrating significant potential for comprehensive modeling of both…

Biomolecules · Quantitative Biology 2025-03-19 Qizhi Pei , Rui Yan , Kaiyuan Gao , Jinhua Zhu , Lijun Wu

The quest for accurate prediction of drug molecule properties poses a fundamental challenge in the realm of Artificial Intelligence Drug Discovery (AIDD). An effective representation of drug molecules emerges as a pivotal component in this…

Machine Learning · Computer Science 2024-04-22 Zhuoyuan Wang , Jiacong Mi , Shan Lu , Jieyue He

We present Multimodal OCR (MOCR), a document parsing paradigm that jointly parses text and graphics into unified textual representations. Unlike conventional OCR systems that focus on text recognition and leave graphical regions as cropped…

Most current molecular language models transfer the masked language model or image-text generation model from natural language processing to molecular field. However, molecules are not solely characterized by atom/bond symbols; they…

Emerging Technologies · Computer Science 2024-11-26 Yifan Wu , Min Zeng , Yang Li , Yang Zhang , Min Li

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…

Artificial Intelligence predicts drug properties by encoding drug molecules, aiding in the rapid screening of candidates. Different molecular representations, such as SMILES and molecule graphs, contain complementary information for…

Machine Learning · Computer Science 2024-06-27 Muzhen Cai , Sendong Zhao , Haochun Wang , Yanrui Du , Zewen Qiang , Bing Qin , Ting Liu

Large Language Models (LLMs) are increasingly being used to support scientific discovery. In chemistry, tasks such as reaction prediction and structure elucidation require reasoning about the structures of molecules. As such, LLM-based…

Machine Learning · Computer Science 2026-05-05 Nicholas T. Runcie , Fergus Imrie , Charlotte M. Deane

Recent advancements in computational chemistry have leveraged the power of trans-former-based language models, such as MoLFormer, pre-trained using a vast amount of simplified molecular-input line-entry system (SMILES) sequences, to…

Biomolecules · Quantitative Biology 2024-11-05 Tianhao Peng , Yuchen Li , Xuhong Li , Jiang Bian , Zeke Xie , Ning Sui , Shahid Mumtaz , Yanwu Xu , Linghe Kong , Haoyi Xiong

Small molecules are essential to drug discovery, and graph-language models hold promise for learning molecular properties and functions from text. However, existing molecule-text datasets are limited in scale and informativeness,…

Biomolecules · Quantitative Biology 2025-06-03 Yihan Zhu , Gang Liu , Eric Inae , Meng Jiang

We present MMOCR-an open-source toolbox which provides a comprehensive pipeline for text detection and recognition, as well as their downstream tasks such as named entity recognition and key information extraction. MMOCR implements 14…

Computer Vision and Pattern Recognition · Computer Science 2021-08-17 Zhanghui Kuang , Hongbin Sun , Zhizhong Li , Xiaoyu Yue , Tsui Hin Lin , Jianyong Chen , Huaqiang Wei , Yiqin Zhu , Tong Gao , Wenwei Zhang , Kai Chen , Wayne Zhang , Dahua Lin

The automated extraction of chemical structures and their corresponding bioactivity data is essential for accelerating drug discovery and enabling data-driven research. Current optical chemical structure recognition tools lack the…

Quantitative Methods · Quantitative Biology 2026-03-04 Zhe Wang , Fangtian Fu , Wei Zhang , Lige Yan , Nan Li , Wenxia Deng , Yan Meng , Jianping Wu , Hui Wu , Wenting Wu , Gang Xu , Xiang Li , Si Chen

Descriptor generation methods using latent representations of encoder$-$decoder (ED) models with SMILES as input are useful because of the continuity of descriptor and restorability to the structure. However, it is not clear how the…

Chemical Physics · Physics 2023-04-14 Shumpei Nemoto , Tadahaya Mizuno , Hiroyuki Kusuhara

Molecular Relational Learning (MRL), aiming to understand interactions between molecular pairs, plays a pivotal role in advancing biochemical research. Recently, the adoption of large language models (LLMs), known for their vast knowledge…

Quantitative Methods · Quantitative Biology 2024-06-11 Junfeng Fang , Shuai Zhang , Chang Wu , Zhengyi Yang , Zhiyuan Liu , Sihang Li , Kun Wang , Wenjie Du , Xiang Wang

The detailed analysis of molecular structures and properties holds great potential for drug development discovery through machine learning. Developing an emergent property in the model to understand molecules would broaden the horizons for…

Recent advancements in the area of Computer Vision with state-of-art Neural Networks has given a boost to Optical Character Recognition (OCR) accuracies. However, extracting characters/text alone is often insufficient for relevant…

Computer Vision and Pattern Recognition · Computer Science 2018-12-17 Vishwanath D , Rohit Rahul , Gunjan Sehgal , Swati , Arindam Chowdhury , Monika Sharma , Lovekesh Vig , Gautam Shroff , Ashwin Srinivasan

One-dimensional nuclear magnetic resonance (NMR) spectroscopy is essential for molecular structure elucidation in organic synthesis, drug discovery, natural product characterization, and metabolomics, yet its interpretation remains heavily…

The computational discovery and design of new crystalline materials, particularly metal-organic frameworks (MOFs), heavily relies on high-quality, computation-ready structural data. However, recent studies have revealed significant error…

Chemical Physics · Physics 2025-10-29 Guobin Zhao , Pengyu Zhao , Yongchul G. Chung