{"id":1322,"date":"2022-02-10T14:29:35","date_gmt":"2022-02-10T14:29:35","guid":{"rendered":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/tamas-terlaky-copy\/"},"modified":"2022-02-10T14:33:19","modified_gmt":"2022-02-10T14:33:19","slug":"chi-zhang","status":"publish","type":"page","link":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/","title":{"rendered":"Chi Zhang"},"content":{"rendered":"\n
\n
\n
\n
\n \n
\n
\n \"Chi \n <\/div>\n \n \n
\n

\n Chi Zhang <\/h3>\n <\/div>\n \n <\/div>\n <\/div>\n
\n \n
\n
\n

Chi Zhang<\/h1>\n

Senior Data Scientist at DoorDash<\/h5>\n

Chi Zhang is a Senior Data Scientist in DoorDash. Chi has been working on real-world ML problems across logistics, robotics, and predictive maintenance. Chi has a Ph.D. degree in Computer Science from the University of Tennessee.<\/p> <\/div>\n<\/div>\n <\/div>\n <\/div>\n <\/div>\n

\n
\n
\n \n
\n
\n

Associate<\/p> <\/div>\n<\/div>\n\n

\n
\n

Professional<\/p> <\/div>\n<\/div>\n\n

\n
\n

Executive<\/p> <\/div>\n<\/div>\n\n

\n
\n
Track: Emerging Analytics<\/h6> <\/div>\n<\/div>\n\n
\n
\n

How Covid Has Changed ETA Predictions: From Modeling Life Cycle to Business Decision Making<\/h2>\n

The ETA, which we use predictive models to calculate, is our best estimate of the delivery duration and serves to help set customer expectations for when their order will arrive. If any of the numerous touchpoints of delivery goes wrong, it can make an order arrive later than expected. Unexpectedly long deliveries lead to inaccurate ETAs and negative customer experiences (especially when the order arrives much later than the ETA suggested), which creates reduced trust and satisfaction in our platform as well as higher churn rates. On the other hand, unnecessarily over-estimated ETAs hurt the growth of business as it leads to a low conversion rate. In Covid era, we’ve seen rapidly changing markets that significantly affect our ETA predictions from multiple dimensions, such as supply\/demand balance, order prep time, traffic conditions, etc. How we revamp the modeling life cycle, design experimentation strategy, and drive decision-making for business outcomes are all critical for adapting to the new normal.<\/p> <\/div>\n<\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n","protected":false},"excerpt":{"rendered":"

Chi Zhang Chi Zhang Senior Data Scientist at DoorDash Chi Zhang is a Senior Data Scientist in DoorDash. Chi has been working on real-world ML problems across logistics, robotics, and predictive maintenance. Chi has a Ph.D. degree in Computer Science from the University of Tennessee. Associate Professional Executive Track: Emerging Analytics How Covid Has Changed […]<\/p>\n","protected":false},"author":1001094,"featured_media":1080,"parent":256,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"class_list":["post-1322","page","type-page","status-publish","has-post-thumbnail","hentry","has-post-title","has-post-date","has-post-category","has-post-tag","has-post-comment","has-post-author",""],"acf":[],"yoast_head":"\nChi Zhang - 2022 INFORMS Business Analytics Conference<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Chi Zhang\" \/>\n<meta property=\"og:description\" content=\"Chi Zhang Chi Zhang Senior Data Scientist at DoorDash Chi Zhang is a Senior Data Scientist in DoorDash. Chi has been working on real-world ML problems across logistics, robotics, and predictive maintenance. Chi has a Ph.D. degree in Computer Science from the University of Tennessee. Associate Professional Executive Track: Emerging Analytics How Covid Has Changed […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/\" \/>\n<meta property=\"og:site_name\" content=\"2022 INFORMS Business Analytics Conference\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/INFORMSpage\/\" \/>\n<meta property=\"article:modified_time\" content=\"2022-02-10T14:33:19+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/files\/2022\/02\/chiZhang.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"300\" \/>\n\t<meta property=\"og:image:height\" content=\"300\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@INFORMS\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/\",\"url\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/\",\"name\":\"Chi Zhang - 2022 INFORMS Business Analytics Conference\",\"isPartOf\":{\"@id\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/files\/2022\/02\/chiZhang.jpg\",\"datePublished\":\"2022-02-10T14:29:35+00:00\",\"dateModified\":\"2022-02-10T14:33:19+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/#primaryimage\",\"url\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/files\/2022\/02\/chiZhang.jpg\",\"contentUrl\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/files\/2022\/02\/chiZhang.jpg\",\"width\":300,\"height\":300},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Speakers\",\"item\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Chi Zhang\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/#website\",\"url\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/\",\"name\":\"INFORMS Business Analytics Conference 2022\",\"description\":\"Houston, TX | April 3-5, 2022\",\"publisher\":{\"@id\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/#organization\",\"name\":\"INFORMS\",\"url\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/files\/2021\/04\/Full_Color_INFORMS_Logo.jpg\",\"contentUrl\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/files\/2021\/04\/Full_Color_INFORMS_Logo.jpg\",\"width\":2023,\"height\":486,\"caption\":\"INFORMS\"},\"image\":{\"@id\":\"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/INFORMSpage\/\",\"https:\/\/x.com\/INFORMS\",\"http:\/\/instagram.com\/informs_orms\",\"https:\/\/www.linkedin.com\/groups\/82644\/profile\"]}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Chi Zhang - 2022 INFORMS Business Analytics Conference","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/","og_locale":"en_US","og_type":"article","og_title":"Chi Zhang","og_description":"Chi Zhang Chi Zhang Senior Data Scientist at DoorDash Chi Zhang is a Senior Data Scientist in DoorDash. Chi has been working on real-world ML problems across logistics, robotics, and predictive maintenance. Chi has a Ph.D. degree in Computer Science from the University of Tennessee. Associate Professional Executive Track: Emerging Analytics How Covid Has Changed […]","og_url":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/","og_site_name":"2022 INFORMS Business Analytics Conference","article_publisher":"https:\/\/www.facebook.com\/INFORMSpage\/","article_modified_time":"2022-02-10T14:33:19+00:00","og_image":[{"width":300,"height":300,"url":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/files\/2022\/02\/chiZhang.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_site":"@INFORMS","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/","url":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/","name":"Chi Zhang - 2022 INFORMS Business Analytics Conference","isPartOf":{"@id":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/#website"},"primaryImageOfPage":{"@id":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/#primaryimage"},"image":{"@id":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/#primaryimage"},"thumbnailUrl":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/files\/2022\/02\/chiZhang.jpg","datePublished":"2022-02-10T14:29:35+00:00","dateModified":"2022-02-10T14:33:19+00:00","breadcrumb":{"@id":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/#primaryimage","url":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/files\/2022\/02\/chiZhang.jpg","contentUrl":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/files\/2022\/02\/chiZhang.jpg","width":300,"height":300},{"@type":"BreadcrumbList","@id":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/chi-zhang\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/"},{"@type":"ListItem","position":2,"name":"Speakers","item":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/speakers\/"},{"@type":"ListItem","position":3,"name":"Chi Zhang"}]},{"@type":"WebSite","@id":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/#website","url":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/","name":"INFORMS Business Analytics Conference 2022","description":"Houston, TX | April 3-5, 2022","publisher":{"@id":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/#organization","name":"INFORMS","url":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/#\/schema\/logo\/image\/","url":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/files\/2021\/04\/Full_Color_INFORMS_Logo.jpg","contentUrl":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/files\/2021\/04\/Full_Color_INFORMS_Logo.jpg","width":2023,"height":486,"caption":"INFORMS"},"image":{"@id":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/INFORMSpage\/","https:\/\/x.com\/INFORMS","http:\/\/instagram.com\/informs_orms","https:\/\/www.linkedin.com\/groups\/82644\/profile"]}]}},"builder_content":"<img src=\"\/wordpress\/analytics2022\/files\/2022\/02\/chiZhang.jpg\" title=\"Chi Zhang\" alt=\"Chi Zhang headshot\"> <h3> Chi Zhang <\/h3>\n<h1>Chi Zhang<\/h1> <h5>Senior Data Scientist at DoorDash<\/h5> <p>Chi Zhang is a Senior Data Scientist in DoorDash. Chi has been working on real-world ML problems across logistics, robotics, and predictive maintenance. Chi has a Ph.D. degree in Computer Science from the University of Tennessee.<\/p>\n<p>Associate<\/p>\n<p>Professional<\/p>\n<p>Executive<\/p>\n<h6>Track: Emerging Analytics<\/h6>\n<h2>How Covid Has Changed ETA Predictions: From Modeling Life Cycle to Business Decision Making<\/h2> <p>The ETA, which we use predictive models to calculate, is our best estimate of the delivery duration and serves to help set customer expectations for when their order will arrive. If any of the numerous touchpoints of delivery goes wrong, it can make an order arrive later than expected. Unexpectedly long deliveries lead to inaccurate ETAs and negative customer experiences (especially when the order arrives much later than the ETA suggested), which creates reduced trust and satisfaction in our platform as well as higher churn rates. On the other hand, unnecessarily over-estimated ETAs hurt the growth of business as it leads to a low conversion rate. In Covid era, we've seen rapidly changing markets that significantly affect our ETA predictions from multiple dimensions, such as supply\/demand balance, order prep time, traffic conditions, etc. How we revamp the modeling life cycle, design experimentation strategy, and drive decision-making for business outcomes are all critical for adapting to the new normal.<\/p>","_links":{"self":[{"href":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/wp-json\/wp\/v2\/pages\/1322","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/wp-json\/wp\/v2\/users\/1001094"}],"replies":[{"embeddable":true,"href":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/wp-json\/wp\/v2\/comments?post=1322"}],"version-history":[{"count":7,"href":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/wp-json\/wp\/v2\/pages\/1322\/revisions"}],"predecessor-version":[{"id":1329,"href":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/wp-json\/wp\/v2\/pages\/1322\/revisions\/1329"}],"up":[{"embeddable":true,"href":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/wp-json\/wp\/v2\/pages\/256"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/wp-json\/wp\/v2\/media\/1080"}],"wp:attachment":[{"href":"https:\/\/meetings.informs.org\/wordpress\/analytics2022\/wp-json\/wp\/v2\/media?parent=1322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}