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Its heterogeneous symptoms and frequent co-occurrence with other disorders make accurate diagnosis challenging. In recent years, researchers have explored machine learning approaches for dysgraphia diagnosis using either offline or online handwriting data. However, most studies analyze these modalities separately, limiting the ability to capture the relationship between them. To address this gap, we propose the first multimodal machine learning approach that integrates both online and offline handwriting data. We created a novel multimodal dataset by transforming an existing online handwriting dataset into its offline counterpart, generating corresponding handwriting images. Our analysis focuses on different word types, including simple words, pseudowords, and difficult words. We trained SVM and XGBoost classifiers separately on online and offline features, then implemented multimodal feature fusion and soft-voted ensemble methods. Additionally, we introduce a novel ensemble with conditional feature fusion, which selectively integrates feature-level fusion when confidence scores fall below a threshold. Our proposed approach achieves an accuracy of 88.8%, outperforming single-modality SVMs by 12\u201314 percentage points, existing methods by 8\u20139 percentage points, and traditional multimodal approaches (soft-vote ensemble and feature fusion) by 3 and 5 percentage points, respectively. This methodology contributes to the preliminary screening of handwriting difficulties through multimodal analysis of word\/pseudoword data, offering an efficient initial assessment tool that supports dysgraphia diagnosis. Our findings highlight the potential of multimodal learning in enhancing dysgraphia assessment, paving the way for more accessible and effective diagnostic tools.<\/jats:p>","DOI":"10.1007\/s12559-026-10546-1","type":"journal-article","created":{"date-parts":[[2026,1,24]],"date-time":"2026-01-24T08:52:44Z","timestamp":1769244764000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Multimodal Ensemble with Conditional Feature Fusion for Dysgraphia Diagnosis in Children from Handwriting Samples"],"prefix":"10.1007","volume":"18","author":[{"given":"Jayakanth","family":"Kunhoth","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Moutaz","family":"Saleh","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Somaya","family":"Al-Maadeed","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Younes","family":"Akbari","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,1,24]]},"reference":[{"issue":"3","key":"10546_CR1","doi-asserted-by":"publisher","first-page":"508","DOI":"10.1109\/TNSRE.2014.2359997","volume":"23","author":"P Drotar","year":"2014","unstructured":"Drotar P, Mekyska J, Rektorova I, Masarova L, Smekal Z, Faundez-Zanuy M. 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