@Article{信息:doi 10.2196 / /公共健康。6586，作者="Tangherlini, Timothy R和Roychowdhury, Vwani和Glenn, Beth和Crespi, Catherine M和Bandari, Roja和Wadia, Akshay和Falahi, Misagh和Ebrahimzadeh, Ehsan和Bastani, Roshan"，标题=" ''妈妈博客"和疫苗接种叙述:来自育儿社交媒体网站上故事聚合的机器学习方法的结果"，期刊="JMIR公共卫生监测"，年="2016"，月=" 11 "，日="22"，卷="2"，数="2"，页="e166"，关键词="疫苗接种;社交媒体;机器学习;个人故事;互联网;健康知识;的态度;背景:社交媒体提供了一个前所未有的机会来探索人们如何在非常大的范围内谈论医疗保健。大量研究表明，有用户论坛的网站对人们寻求与健康有关的信息的重要性。 Parents turn to some of these sites, colloquially referred to as ``mommy blogs,'' to share concerns about children's health care, including vaccination. Although substantial work has considered the role of social media, particularly Twitter, in discussions of vaccination and other health care--related issues, there has been little work on describing the underlying structure of these discussions and the role of persuasive storytelling, particularly on sites with no limits on post length. Understanding the role of persuasive storytelling at Internet scale provides useful insight into how people discuss vaccinations, including exemption-seeking behavior, which has been tied to a recent diminution of herd immunity in some communities. Objective: To develop an automated and scalable machine-learning method for story aggregation on social media sites dedicated to discussions of parenting. We wanted to discover the aggregate narrative frameworks to which individuals, through their exchange of experiences and commentary, contribute over time in a particular topic domain. We also wanted to characterize temporal trends in these narrative frameworks on the sites over the study period. Methods: To ensure that our data capture long-term discussions and not short-term reactions to recent events, we developed a dataset of 1.99 million posts contributed by 40,056 users and viewed 20.12 million times indexed from 2 parenting sites over a period of 105 months. Using probabilistic methods, we determined the topics of discussion on these parenting sites. We developed a generative statistical-mechanical narrative model to automatically extract the underlying stories and story fragments from millions of posts. We aggregated the stories into an overarching narrative framework graph. In our model, stories were represented as network graphs with actants as nodes and their various relationships as edges. We estimated the latent stories circulating on these sites by modeling the posts as a sampling of the hidden narrative framework graph. Temporal trends were examined based on monthly user-poststatistics. Results: We discovered that discussions of exemption from vaccination requirements are highly represented. We found a strong narrative framework related to exemption seeking and a culture of distrust of government and medical institutions. Various posts reinforced part of the narrative framework graph in which parents, medical professionals, and religious institutions emerged as key nodes, and exemption seeking emerged as an important edge. In the aggregate story, parents used religion or belief to acquire exemptions to protect their children from vaccines that are required by schools or government institutions, but (allegedly) cause adverse reactions such as autism, pain, compromised immunity, and even death. Although parents joined and left the discussion forums over time, discussions and stories about exemptions were persistent and robust to these membership changes. Conclusions: Analyzing parent forums about health care using an automated analytic approach, such as the one presented here, allows the detection of widespread narrative frameworks that structure and inform discussions. In most vaccination stories from the sites we analyzed, it is taken for granted that vaccines and not vaccine preventable diseases (VPDs) pose a threat to children. Because vaccines are seen as a threat, parents focus on sharing successful strategies for avoiding them, with exemption being the foremost among these strategies. When new parents join such sites, they may be exposed to this endemic narrative framework in the threads they read and to which they contribute, which may influence their health care decision making. ", issn="2369-2960", doi="10.2196/publichealth.6586", url="http://publichealth.www.mybigtv.com/2016/2/e166/", url="https://doi.org/10.2196/publichealth.6586", url="http://www.ncbi.nlm.nih.gov/pubmed/27876690" }