<doi_batch xmlns="http://www.crossref.org/schema/4.4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="4.4.0"><head><doi_batch_id>5e0ff967-2e42-4d08-9954-77c2a86f11ed</doi_batch_id><timestamp>20231010053121143</timestamp><depositor><depositor_name>wseas:wseas</depositor_name><email_address>mdt@crossref.org</email_address></depositor><registrant>MDT Deposit</registrant></head><body><journal><journal_metadata language="en"><full_title>WSEAS TRANSACTIONS ON BIOLOGY AND BIOMEDICINE</full_title><issn media_type="electronic">2224-2902</issn><issn media_type="print">1109-9518</issn><archive_locations><archive name="Portico"/></archive_locations><doi_data><doi>10.37394/23208</doi><resource>http://wseas.org/wseas/cms.action?id=4011</resource></doi_data></journal_metadata><journal_issue><publication_date media_type="online"><month>2</month><day>13</day><year>2023</year></publication_date><publication_date media_type="print"><month>2</month><day>13</day><year>2023</year></publication_date><journal_volume><volume>20</volume><doi_data><doi>10.37394/23208.2023.20</doi><resource>https://wseas.com/journals/bab/2023.php</resource></doi_data></journal_volume></journal_issue><journal_article language="en"><titles><title>Quantile Loss Function Empowered Machine Learning Models for Predicting Carotid Arterial Blood Flow Characteristics</title></titles><contributors><person_name sequence="first" contributor_role="author"><given_name>T. Raja</given_name><surname>Rani</surname><affiliation>Foundation Programme Department, Military Technological College, Muscat, OMAN</affiliation></person_name><person_name sequence="additional" contributor_role="author"><given_name>Woshan</given_name><surname>Srimal</surname><affiliation>Foundation Programme Department, Military Technological College, Muscat, OMAN</affiliation></person_name><person_name sequence="additional" contributor_role="author"><given_name>Abdullah</given_name><surname>Al Shibli</surname><affiliation>Applied &amp; Research Department, Military Technological College, Muscat, OMAN</affiliation></person_name><person_name sequence="additional" contributor_role="author"><given_name>Nooh Zayid Suwaid</given_name><surname>Al Bakri</surname><affiliation>MTC Clinic, Military Technological College, Muscat, OMAN</affiliation></person_name><person_name sequence="additional" contributor_role="author"><given_name>Mohamed</given_name><surname>Siraj</surname><affiliation>Systems Engineering Department, Military Technological College, Muscat, OMAN</affiliation></person_name><person_name sequence="additional" contributor_role="author"><given_name>T. S. L.</given_name><surname>Radhika</surname><affiliation>Department of Mathematics, BITS Pilani Hyderabad, Hyderabad, INDIA</affiliation></person_name></contributors><jats:abstract xmlns:jats="http://www.ncbi.nlm.nih.gov/JATS1"><jats:p>This research presents a novel approach using machine learning models with the quantile loss function to predict blood flow characteristics, specifically the wall shear stress, in the common carotid artery and its bifurcated segments, the internal and external carotid arteries. The dataset for training these models was generated through a numerical model developed for the idealized artery. This model represented blood as an incompressible Newtonian fluid and the artery as an elastic pipe with varying material properties, simulating different flow conditions. The findings of this study revealed that the quantile linear regression model is the most reliable in predicting the target variable, i.e., wall shear stress in the common carotid artery. On the other hand, the quantile gradient boosting algorithm demonstrated exceptional performance in predicting wall shear stress in the bifurcated segments. Through this study, the blood velocity and the wall shear stress in the common carotid artery are identified as the most important features affecting the wall shear stress in the internal carotid artery, while the blood velocity and the blood pressure affected the same in the external carotid artery the most. Furthermore, for a given record of the feature dataset, the study revealed the efficacy of the quantile linear-regression model in capturing a possible prevalence of atherosclerotic conditions in the internal carotid artery. But then, it was not very successful in identifying the same in the external carotid artery. However, due to the use of idealized conditions in the study, these findings need comprehensive clinical verification.</jats:p></jats:abstract><publication_date media_type="online"><month>10</month><day>10</day><year>2023</year></publication_date><publication_date media_type="print"><month>10</month><day>10</day><year>2023</year></publication_date><pages><first_page>155</first_page><last_page>170</last_page></pages><publisher_item><item_number item_number_type="article_number">16</item_number></publisher_item><ai:program xmlns:ai="http://www.crossref.org/AccessIndicators.xsd" name="AccessIndicators"><ai:free_to_read start_date="2023-10-10"/><ai:license_ref applies_to="am" start_date="2023-10-10">https://wseas.com/journals/bab/2023/a325108-012(2023).pdf</ai:license_ref></ai:program><archive_locations><archive name="Portico"/></archive_locations><doi_data><doi>10.37394/23208.2023.20.16</doi><resource>https://wseas.com/journals/bab/2023/a325108-012(2023).pdf</resource></doi_data><citation_list><citation key="ref0"><doi>10.3390/biomedicines10092157</doi><unstructured_citation>Li X., Liu X., Deng X., &amp; Fan Y., Interplay between artificial intelligence and biomechanics modeling in the cardiovascular disease prediction, Biomedicines, 10(9), 2022, 2157. doi:10.3390/biomedicines10092157. </unstructured_citation></citation><citation key="ref1"><doi>10.3389/fphys.2022.1094743</doi><unstructured_citation>Wang S, Wu D, Li G, Zhang Z, Xiao W, Li R, Qiao A, Jin L and Liu H (2023) Deep learning-based hemodynamic prediction of carotid artery stenosis before and after surgical treatments. 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