{"id":60,"date":"2020-01-21T11:26:15","date_gmt":"2020-01-21T11:26:15","guid":{"rendered":"http:\/\/biosis.tu.ac.kr\/?p=60"},"modified":"2020-01-21T11:26:15","modified_gmt":"2020-01-21T11:26:15","slug":"the-similarity-between-two-time-series-signals","status":"publish","type":"post","link":"https:\/\/pkai.pknu.ac.kr\/index.php\/2020\/01\/21\/the-similarity-between-two-time-series-signals\/","title":{"rendered":"The similarity between two-time series signals"},"content":{"rendered":"\n<div class=\"wp-block-media-text alignwide\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" width=\"1024\" height=\"609\" src=\"http:\/\/biosis.tu.ac.kr\/wp-content\/uploads\/2020\/01\/naive_matching-1024x609.jpg\" alt=\"\" class=\"wp-image-62\" srcset=\"https:\/\/pkai.pknu.ac.kr\/wp-content\/uploads\/naive_matching-1024x609.jpg 1024w, https:\/\/pkai.pknu.ac.kr\/wp-content\/uploads\/naive_matching-300x179.jpg 300w, https:\/\/pkai.pknu.ac.kr\/wp-content\/uploads\/naive_matching-768x457.jpg 768w, https:\/\/pkai.pknu.ac.kr\/wp-content\/uploads\/naive_matching.jpg 1047w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"has-normal-font-size\"> Calculating similarity of two time-series signal is not an easy issue. A naive way is directly comparing pointwise after sampling, but it often is not a good idea because it results in completely different results to human perception. <\/p>\n<\/div><\/div>\n\n\n<div class=\"wp-block-media-text alignwide\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" width=\"1024\" height=\"612\" src=\"http:\/\/biosis.tu.ac.kr\/wp-content\/uploads\/2020\/01\/optimal-matching-1024x612.jpg\" alt=\"\" class=\"wp-image-61\" srcset=\"https:\/\/pkai.pknu.ac.kr\/wp-content\/uploads\/optimal-matching-1024x612.jpg 1024w, https:\/\/pkai.pknu.ac.kr\/wp-content\/uploads\/optimal-matching-300x179.jpg 300w, https:\/\/pkai.pknu.ac.kr\/wp-content\/uploads\/optimal-matching-768x459.jpg 768w, https:\/\/pkai.pknu.ac.kr\/wp-content\/uploads\/optimal-matching.jpg 1119w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"has-normal-font-size\"> A typical human would match points in consideration of its shape and curvature. We may need algorithms working like a human being. <\/p>\n<\/div><\/div>\n\n\n<div class=\"wp-block-media-text alignwide\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" width=\"1024\" height=\"543\" src=\"http:\/\/biosis.tu.ac.kr\/wp-content\/uploads\/2020\/01\/dpw-1-1024x543.jpg\" alt=\"\" class=\"wp-image-63\" srcset=\"https:\/\/pkai.pknu.ac.kr\/wp-content\/uploads\/dpw-1-1024x543.jpg 1024w, https:\/\/pkai.pknu.ac.kr\/wp-content\/uploads\/dpw-1-300x159.jpg 300w, https:\/\/pkai.pknu.ac.kr\/wp-content\/uploads\/dpw-1-768x407.jpg 768w, https:\/\/pkai.pknu.ac.kr\/wp-content\/uploads\/dpw-1.jpg 1119w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"has-normal-font-size\"> We proposed a novel algorithm for this issue, by extending DTW (dynamic time warping), named&nbsp;<strong><em>Dyamic Positional Warping (DPW)<\/em><\/strong>. We also found that DPW outperforms in the recognition tasks of other problems such as EEG. <\/p>\n<\/div><\/div>\n\n\n<p class=\"has-medium-font-size\">Paper lists<\/p>\n\n\n<ul><li><a href=\"https:\/\/www.worldscientific.com\/doi\/10.1142\/S0218001409007454\">Dynamic Time Warping for Online Handwriting<\/a>, International Journal of Pattern Recognition and Artificial Intelligence (2009)<\/li><li>Dynamic Position Warping for On-line 2D Shape, Proceedings of the 13th Conference of the International Graphonomics Society (2007)<\/li><li><a href=\"https:\/\/ieeexplore.ieee.org\/document\/4624031\">DPW Approach for Random Forgery Problem in Online Handwritten Signature Verification<\/a>, Proceedings of 4th International Conference on Networked Computing and Advanced Information Management (2008)<\/li><li><a href=\"https:\/\/www.hindawi.com\/journals\/jam\/2014\/528071\/\">Enhanced Template Matching Using Dynamic Positional Warping for Identification of Specific Patterns in Electroencephalogram<\/a>, Journal of Applied Mathematics (2014)<\/li><li><a href=\"https:\/\/jneuroengrehab.biomedcentral.com\/articles\/10.1186\/s12984-017-0303-5\">Development of an electrooculogram-based eye-computer interface for communication of individuals with amyotrophic lateral sclerosis, Journal of NeuroEngineering and Rehabilitation<\/a>&nbsp;(2017)<\/li><\/ul>\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Calculating similarity of two time-series signal is not an easy issue. A naive way is directly comparing pointwise after sampling, but it often is not a good idea because it results in completely different results to human perception. A typical human would match points in consideration of its shape and curvature. We may need algorithms [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":54,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[4,5,8,10],"jetpack_featured_media_url":"https:\/\/pkai.pknu.ac.kr\/wp-content\/uploads\/dpw.jpg","_links":{"self":[{"href":"https:\/\/pkai.pknu.ac.kr\/index.php\/wp-json\/wp\/v2\/posts\/60"}],"collection":[{"href":"https:\/\/pkai.pknu.ac.kr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pkai.pknu.ac.kr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pkai.pknu.ac.kr\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/pkai.pknu.ac.kr\/index.php\/wp-json\/wp\/v2\/comments?post=60"}],"version-history":[{"count":0,"href":"https:\/\/pkai.pknu.ac.kr\/index.php\/wp-json\/wp\/v2\/posts\/60\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pkai.pknu.ac.kr\/index.php\/wp-json\/wp\/v2\/media\/54"}],"wp:attachment":[{"href":"https:\/\/pkai.pknu.ac.kr\/index.php\/wp-json\/wp\/v2\/media?parent=60"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pkai.pknu.ac.kr\/index.php\/wp-json\/wp\/v2\/categories?post=60"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pkai.pknu.ac.kr\/index.php\/wp-json\/wp\/v2\/tags?post=60"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}