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The purpose of the workshop was to serve as a platform for publication and discussion of Information Retrieval and NLP research and their applications in the domain of eCommerce. The workshop program was designed to bring together practitioners and researchers from academia and industry to discuss the challenges and approaches to product search and recommendation in the eCommerce domain. A second goal was to run a data challence on real-world eCommerce data. The workshop drew contributions from both industry as well as academia, in total the workshop received 38 submissions, and accepted 24 (63%). There were two keynotes by invited speakers, a poster session where all the accepted submissions were presented, a panel discussion, and three short talks by invited speakers.<\/jats:p>","DOI":"10.1145\/3458553.3458555","type":"journal-article","created":{"date-parts":[[2021,3,23]],"date-time":"2021-03-23T22:17:49Z","timestamp":1616537869000},"page":"11-19","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":4,"title":["Report on the SIGIR 2019 Workshop on eCommerce (ECOM19)"],"prefix":"10.1145","volume":"53","author":[{"given":"Jon","family":"Degenhardt","sequence":"first","affiliation":[{"name":"eBay inc."}]},{"given":"Surya","family":"Kallumadi","sequence":"additional","affiliation":[{"name":"The Home Depot"}]},{"given":"Utkarsh","family":"Porwal","sequence":"additional","affiliation":[{"name":"eBay inc."}]},{"given":"Andrew","family":"Trotman","sequence":"additional","affiliation":[{"name":"University of Otago, New Zealand"}]}],"member":"320","published-online":{"date-parts":[[2021,3,23]]},"reference":[{"key":"e_1_2_1_1_1","volume-title":"Vasileios Kandylas and Rukmini Iyer Unsupervised Construction of a Product Knowledge Graph In Proceedings of the SIGIR 2019 Workshop on eCommerce (ECOM 19)","author":"Alonso Omar","year":"2019","unstructured":"Omar Alonso , Vasileios Kandylas and Rukmini Iyer Unsupervised Construction of a Product Knowledge Graph In Proceedings of the SIGIR 2019 Workshop on eCommerce (ECOM 19) , 2019 . 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Fabiano Bel\u00e9m, Alexandre Maros, Sergio Canuto, Rodrigo Silva, Jussara Almeida and Marcos Goncalves Image Aesthetics and its Effects on Product Clicks in E-Commerce Search In Proceedings of the SIGIR 2019 Workshop on eCommerce (ECOM 19), 2019."},{"key":"e_1_2_1_3_1","volume-title":"Benjamin Paul Chamberlain and Odysseas Zisimopoulos Fashion Outfit Generation for E-commerce In Proceedings of the SIGIR 2019 Workshop on eCommerce (ECOM 19)","author":"Bettaney Elaine","year":"2019","unstructured":"Elaine Bettaney , Stephen Hardwick , Benjamin Paul Chamberlain and Odysseas Zisimopoulos Fashion Outfit Generation for E-commerce In Proceedings of the SIGIR 2019 Workshop on eCommerce (ECOM 19) , 2019 . Elaine Bettaney, Stephen Hardwick, Benjamin Paul Chamberlain and Odysseas Zisimopoulos Fashion Outfit Generation for E-commerce In Proceedings of the SIGIR 2019 Workshop on eCommerce (ECOM 19), 2019."},{"key":"e_1_2_1_4_1","volume-title":"Vijai Mohan and W. 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Wei-Cheng Chen, Chih-Yu Wang, Su-Chen Lin, Alex Ou and Tzu-Chiang Liou PSAC: Context-based Purchase Prediction Framework via User's Sequential Actions In Proceedings of the SIGIR 2019 Workshop on eCommerce (ECOM 19), 2019."},{"key":"e_1_2_1_6_1","volume-title":"Mainak Chain and Sudeshna Sarkar Neural factorization for Offer Recommendation using Knowledge Graph Embeddings In Proceedings of the SIGIR 2019 Workshop on eCommerce (ECOM 19)","author":"Chowdhury Gourab","year":"2019","unstructured":"Gourab Chowdhury , Madiraju Srilakshmi , Mainak Chain and Sudeshna Sarkar Neural factorization for Offer Recommendation using Knowledge Graph Embeddings In Proceedings of the SIGIR 2019 Workshop on eCommerce (ECOM 19) , 2019 . 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