{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,18]],"date-time":"2025-12-18T09:40:59Z","timestamp":1766050859976,"version":"build-2065373602"},"reference-count":47,"publisher":"Association for Computing Machinery (ACM)","issue":"4","funder":[{"name":"Science of Security Lablet","award":["H98230-17-D-0080"],"award-info":[{"award-number":["H98230-17-D-0080"]}]}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["ACM Trans. Web"],"published-print":{"date-parts":[[2025,11,30]]},"abstract":"<jats:p>Online storytelling is an essential channel for users to express their experiences and opinions and therefore influence online society. Yet, despite its importance, approaches to story understanding on social media have not advanced sufficiently. Specifically, current approaches can carry out high-level, aggregate analyses on a corpus of stories but do not provide a way of understanding individual stories. We consider a major source of social behavior, app reviews, which surprisingly are rarely studied in social media research. We observe that app reviews often contain one or more stories. These stories exhibit complex structures and are often presented via events that are not placed in their natural order.<\/jats:p>\n          <jats:p>Accordingly, we introduce Saga, an approach that carries out a deep analysis of the event-based structures and substructures arising in app reviews. Saga\u2019s main contribution is how it goes beyond the state of the art in identifying fine-grained story (sub)structures. In addition, it supports querying stories (and their containing app reviews) according to these (sub)structures. These specific (sub)structures help identify stories that serve different information goals. Saga is evaluated both computationally on a publicly available data source and via a human study validating the helpfulness in addressing various information goals.<\/jats:p>","DOI":"10.1145\/3728313","type":"journal-article","created":{"date-parts":[[2025,4,16]],"date-time":"2025-04-16T07:00:57Z","timestamp":1744786857000},"page":"1-22","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":2,"title":["Saga: Understanding Stories in Mobile App Reviews"],"prefix":"10.1145","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4887-6354","authenticated-orcid":false,"given":"Hui","family":"Guo","sequence":"first","affiliation":[{"name":"Quora Inc.","place":["Mountain View, United States"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3599-3893","authenticated-orcid":false,"given":"Munindar P.","family":"Singh","sequence":"additional","affiliation":[{"name":"Computer Science, North Carolina State University at Raleigh","place":["Raleigh, United States"]}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2025,10,16]]},"reference":[{"key":"e_1_3_3_2_2","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-642-00382-0_35"},{"key":"e_1_3_3_3_2","doi-asserted-by":"publisher","DOI":"10.36190\/2020.23"},{"key":"e_1_3_3_4_2","unstructured":"Daniel Cer Yinfei Yang Sheng-yi Kong Nan Hua Nicole Limtiaco Rhomni St. John Noah Constant Mario Guajardo-Cespedes Steve Yuan Chris Tar et al.. 2018. 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