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As most existing datasets do not meet the requirements of online handwriting recognition and as they have been collected using specific equipment under constrained conditions, we propose a novel online handwriting dataset acquired from 119 writers consisting of 31,275 uppercase and lowercase English alphabet character recordings (52 classes) as part of the UbiComp 2020 Time Series Classification Challenge. Our novel OnHW-chars dataset allows for the evaluations of uppercase, lowercase and combined classification tasks, on both writer-dependent (WD) and writer-independent (WI) classes and we show that properly tuned machine learning pipelines as well as deep learning classifiers (such as CNNs, LSTMs, and BiLSTMs) yield accuracies up to 90 % for the WD task and 83 % for the WI task for uppercase characters. Our baseline implementations together with the rich and publicly available OnHW dataset serve as a baseline for future research in that area.<\/jats:p>","DOI":"10.1145\/3411842","type":"journal-article","created":{"date-parts":[[2020,9,4]],"date-time":"2020-09-04T21:39:45Z","timestamp":1599255585000},"page":"1-20","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":34,"title":["The OnHW Dataset"],"prefix":"10.1145","volume":"4","author":[{"given":"Felix","family":"Ott","sequence":"first","affiliation":[{"name":"Fraunhofer Institute for Integrated Circuits (IIS), Nuremberg, Germany, Nuremberg, Ludwig-Maximilians-University (LMU), Munich, Germany"}]},{"given":"Mohamad","family":"Wehbi","sequence":"additional","affiliation":[{"name":"Friedrich-Alexander University (FAU) Erlangen-Nuremberg, Germany, Erlangen"}]},{"given":"Tim","family":"Hamann","sequence":"additional","affiliation":[{"name":"STABILO International GmbH, Heroldsberg, Germany, Heroldsberg"}]},{"given":"Jens","family":"Barth","sequence":"additional","affiliation":[{"name":"STABILO International GmbH, Heroldsberg, Germany, Heroldsberg"}]},{"given":"Bj\u00f6rn","family":"Eskofier","sequence":"additional","affiliation":[{"name":"Friedrich-Alexander University (FAU) Erlangen-Nuremberg, Germany, Erlangen"}]},{"given":"Christopher","family":"Mutschler","sequence":"additional","affiliation":[{"name":"Fraunhofer Institute for Integrated Circuits (IIS), Nuremberg, Germany, Nuremberg, Ludwig-Maximilians-University (LMU), Munich, Germany"}]}],"member":"320","published-online":{"date-parts":[[2020,9,4]]},"reference":[{"key":"e_1_2_1_1_1","doi-asserted-by":"publisher","DOI":"10.1109\/ICDAR.1997.620583"},{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1109\/ICFHR.2010.37"},{"key":"e_1_2_1_3_1","volume-title":"Proc. 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