FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2578391959> ?p ?o ?g. }

• W2578391959 abstract "This project is about analyzing anatomical data obtained by pharyngometry with respect to obstructive sleep apnea (OSA) and the goal is to extract valued feature to discriminate OSA and non-OSA subjects. The key contributions of this thesis work are two-fold. First, we extract a rich set of 16 features from raw time series data and evaluate all them by ten-fold cross validation with different classifiers. We also did an extensive evaluation of the correlation of each feature with class labels based on t-test, Matthews Correlation Coefficient (MCC), Receiver Operating Characteristic (ROC), and Area Under the Curve (AUC). The experiment results show that several features such as the volume, volume variance, t-test selection feature and stretched length are very predictive. The accuracy of OSA and Non-OSA classification task can reach up to 77% with these features alone. The t-test conducted on these features show the significant correlation between the given features and the class labels. We also found an interesting result that on average OSA patients have smaller volume (stretch length) than non-OSA people. From medical point of view, this finding is consistent because OSA likely occurs when the muscles relax during sleep, causing soft tissue in the back of the throat to collapse and block the upper airway [11]. The second major contribution of this work is a method to search for local part of the time series from which the extracted features are most predictive. The main idea is based on an intuitive observation that large part of the time series which usually corresponds to normal part of the throat is not predictive. Therefore, using features extracted from the entire time series for classification is not effective because normal part of the throat contributes a big factor to the value of the features. In order to avoid this type of noise information we propose method to search for small part of time series which likely corresponds to abnormal part of the throat from which the extracted features could be more predictive. We did an exhaustive search for such predictive local parts. We found local parts from which the volume and stretch length were extracted and improved the classification accuracy from 65% to 75%. An interesting finding is that the most predictive local parts found by our algorithm are very close to the oropharyngeal junction point (OPJ), which has been already confirmed by some prior work in the literature [2] as an important point for discriminating OSA and non-OSA. They almost belong to the oropharynx region, which is consistent with the domain knowledge of OSA that the oropharynx region is the most possible obstructed site in the upper airway. Extracting Features to Discriminate OSA and non-OSA iii" @default.
• W2578391959 created "2017-01-26" @default.
• W2578391959 creator A5000426340 @default.
• W2578391959 date "2013-01-01" @default.
• W2578391959 modified "2023-09-25" @default.
• W2578391959 title "Extracting features to discriminate OSA and non-OSA" @default.
• W2578391959 cites W2001103857 @default.
• W2578391959 cites W2029438113 @default.
• W2578391959 cites W2064683798 @default.
• W2578391959 cites W2131023453 @default.
• W2578391959 cites W2141530964 @default.
• W2578391959 cites W2150777746 @default.
• W2578391959 cites W2154813799 @default.
• W2578391959 cites W2155925556 @default.
• W2578391959 cites W2164274563 @default.
• W2578391959 cites W44341116 @default.
• W2578391959 hasPublicationYear "2013" @default.
• W2578391959 type Work @default.
• W2578391959 sameAs 2578391959 @default.
• W2578391959 citedByCount "0" @default.
• W2578391959 crossrefType "journal-article" @default.
• W2578391959 hasAuthorship W2578391959A5000426340 @default.
• W2578391959 hasConcept C117220453 @default.
• W2578391959 hasConcept C119857082 @default.
• W2578391959 hasConcept C121332964 @default.
• W2578391959 hasConcept C12267149 @default.
• W2578391959 hasConcept C126322002 @default.
• W2578391959 hasConcept C138885662 @default.
• W2578391959 hasConcept C148483581 @default.
• W2578391959 hasConcept C153180895 @default.
• W2578391959 hasConcept C154945302 @default.
• W2578391959 hasConcept C164085508 @default.
• W2578391959 hasConcept C169903167 @default.
• W2578391959 hasConcept C177264268 @default.
• W2578391959 hasConcept C199360897 @default.
• W2578391959 hasConcept C20556612 @default.
• W2578391959 hasConcept C2524010 @default.
• W2578391959 hasConcept C2776006263 @default.
• W2578391959 hasConcept C2776401178 @default.
• W2578391959 hasConcept C2780092901 @default.
• W2578391959 hasConcept C33923547 @default.
• W2578391959 hasConcept C41008148 @default.
• W2578391959 hasConcept C41895202 @default.
• W2578391959 hasConcept C58471807 @default.
• W2578391959 hasConcept C62520636 @default.
• W2578391959 hasConcept C71924100 @default.
• W2578391959 hasConceptScore W2578391959C117220453 @default.
• W2578391959 hasConceptScore W2578391959C119857082 @default.
• W2578391959 hasConceptScore W2578391959C121332964 @default.
• W2578391959 hasConceptScore W2578391959C12267149 @default.
• W2578391959 hasConceptScore W2578391959C126322002 @default.
• W2578391959 hasConceptScore W2578391959C138885662 @default.
• W2578391959 hasConceptScore W2578391959C148483581 @default.
• W2578391959 hasConceptScore W2578391959C153180895 @default.
• W2578391959 hasConceptScore W2578391959C154945302 @default.
• W2578391959 hasConceptScore W2578391959C164085508 @default.
• W2578391959 hasConceptScore W2578391959C169903167 @default.
• W2578391959 hasConceptScore W2578391959C177264268 @default.
• W2578391959 hasConceptScore W2578391959C199360897 @default.
• W2578391959 hasConceptScore W2578391959C20556612 @default.
• W2578391959 hasConceptScore W2578391959C2524010 @default.
• W2578391959 hasConceptScore W2578391959C2776006263 @default.
• W2578391959 hasConceptScore W2578391959C2776401178 @default.
• W2578391959 hasConceptScore W2578391959C2780092901 @default.
• W2578391959 hasConceptScore W2578391959C33923547 @default.
• W2578391959 hasConceptScore W2578391959C41008148 @default.
• W2578391959 hasConceptScore W2578391959C41895202 @default.
• W2578391959 hasConceptScore W2578391959C58471807 @default.
• W2578391959 hasConceptScore W2578391959C62520636 @default.
• W2578391959 hasConceptScore W2578391959C71924100 @default.
• W2578391959 hasLocation W25783919591 @default.
• W2578391959 hasOpenAccess W2578391959 @default.
• W2578391959 hasPrimaryLocation W25783919591 @default.
• W2578391959 hasRelatedWork W152214607 @default.
• W2578391959 hasRelatedWork W2082051945 @default.
• W2578391959 hasRelatedWork W2085155595 @default.
• W2578391959 hasRelatedWork W2565252171 @default.
• W2578391959 hasRelatedWork W2592256617 @default.
• W2578391959 hasRelatedWork W2761909604 @default.
• W2578391959 hasRelatedWork W2771830048 @default.
• W2578391959 hasRelatedWork W2795372511 @default.
• W2578391959 hasRelatedWork W2795372628 @default.
• W2578391959 hasRelatedWork W2902898221 @default.
• W2578391959 hasRelatedWork W3003012529 @default.
• W2578391959 hasRelatedWork W3003453994 @default.
• W2578391959 hasRelatedWork W3007344422 @default.
• W2578391959 hasRelatedWork W3010678670 @default.
• W2578391959 hasRelatedWork W3082855837 @default.
• W2578391959 hasRelatedWork W3086949621 @default.
• W2578391959 hasRelatedWork W3110862455 @default.
• W2578391959 hasRelatedWork W3156386642 @default.
• W2578391959 hasRelatedWork W3183161556 @default.
• W2578391959 hasRelatedWork W3204047853 @default.
• W2578391959 isParatext "false" @default.
• W2578391959 isRetracted "false" @default.
• W2578391959 magId "2578391959" @default.
• W2578391959 workType "article" @default.