{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,11]],"date-time":"2025-11-11T13:58:30Z","timestamp":1762869510283,"version":"3.33.0"},"reference-count":75,"publisher":"Cambridge University Press (CUP)","license":[{"start":{"date-parts":[[2025,1,27]],"date-time":"2025-01-27T00:00:00Z","timestamp":1737936000000},"content-version":"unspecified","delay-in-days":26,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/501100020950","name":"National Science and Technology Council","doi-asserted-by":"publisher","award":["MOST 108-2221-E-011-018-MY3"],"award-info":[{"award-number":["MOST 108-2221-E-011-018-MY3"]}],"id":[{"id":"10.13039\/501100020950","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["cambridge.org"],"crossmark-restriction":true},"short-container-title":["AIEDAM"],"published-print":{"date-parts":[[2025]]},"abstract":"<jats:title>Abstract<\/jats:title>\n\t  <jats:p>Human activity recognition (HAR) is a vital component of human\u2013robot collaboration. Recognizing the operational elements involved in an operator\u2019s task is essential for realizing this vision, and HAR plays a key role in achieving this. However, recognizing human activity in an industrial setting differs from recognizing daily living activities. An operator\u2019s activity must be divided into fine elements to ensure efficient task completion. Despite this, there is relatively little related research in the literature. This study aims to develop machine learning models to classify the sequential movement elements of a task. To illustrate this, three logistic operations in an integrated circuit (IC) design house were studied, with participants wearing 13 inertial measurement units manufactured by XSENS to mimic the tasks. The kinematics data were collected to develop the machine learning models. The time series data preprocessing involved applying two normalization methods and three different window lengths. Eleven features were extracted from the processed data to train the classification models. Model validation was carried out using the subject-independent method, with data from three participants excluded from the training dataset. The results indicate that the developed model can efficiently classify operational elements when the operator performs the activity accurately. However, incorrect classifications occurred when the operator missed an operation or awkwardly performed the task. RGB video clips helped identify these misclassifications, which can be used by supervisors for training purposes or by industrial engineers for work improvement.<\/jats:p>","DOI":"10.1017\/s0890060424000313","type":"journal-article","created":{"date-parts":[[2025,1,27]],"date-time":"2025-01-27T05:41:10Z","timestamp":1737956470000},"update-policy":"https:\/\/doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":1,"title":["Machine learning models for sequential motion recognition in human activity for logistics operations efficiency improvement"],"prefix":"10.1017","volume":"39","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7587-6424","authenticated-orcid":false,"given":"Chih-Feng","family":"Cheng","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5549-0527","authenticated-orcid":false,"given":"Chiuhsiang Joe","family":"Lin","sequence":"additional","affiliation":[]},{"given":"Qin-Xuan","family":"Hu","sequence":"additional","affiliation":[]}],"member":"56","published-online":{"date-parts":[[2025,1,27]]},"reference":[{"key":"S0890060424000313_r45","doi-asserted-by":"publisher","DOI":"10.3390\/app7101101"},{"key":"S0890060424000313_r42","doi-asserted-by":"publisher","DOI":"10.1016\/j.rcim.2022.102384"},{"key":"S0890060424000313_r49","doi-asserted-by":"publisher","DOI":"10.1093\/jcde\/qwaa047"},{"key":"S0890060424000313_r63","doi-asserted-by":"publisher","DOI":"10.1109\/LT.2018.8368507"},{"key":"S0890060424000313_r14","first-page":"3238","article-title":"Seglearn: A python package for learning sequences and time series","volume":"19","author":"Burns","year":"2018","journal-title":"The Journal of Machine Learning Research"},{"key":"S0890060424000313_r27","doi-asserted-by":"publisher","DOI":"10.1016\/j.asoc.2017.09.027"},{"key":"S0890060424000313_r52","doi-asserted-by":"publisher","DOI":"10.1016\/j.neucom.2021.11.044"},{"key":"S0890060424000313_r66","doi-asserted-by":"publisher","DOI":"10.1109\/IROS.2017.8206051"},{"key":"S0890060424000313_r50","doi-asserted-by":"publisher","DOI":"10.1109\/AFRICA.2019.8843403"},{"key":"S0890060424000313_r4","first-page":"193","article-title":"Is Industry 5.0 a human-centred approach?","volume":"11","author":"Alves","year":"2023","journal-title":"A systematic review. 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