Researchers have collected Twitter data to study a wide range of topics. This growing body of literature, however, has not yet been reviewed systematically to synthesize Twitter-related papers. The existing literature review papers have been limited by constraints of traditional methods to manually select and analyze samples of topically related papers. The goals of this retrospective study are to identify dominant topics of Twitter-based research, summarize the temporal trend of topics, and interpret the evolution of topics withing the last ten years. This study systematically mines a large number of Twitter-based studies to characterize the relevant literature by an efficient and effective approach. This study collected relevant papers from three databases and applied text mining and trend analysis to detect semantic patterns and explore the yearly development of research themes across a decade. We found 38 topics in more than 18,000 manuscripts published between 2006 and 2019. By quantifying temporal trends, this study found that while 23.7% of topics did not show a significant trend (P => 0.05), 21% of topics had increasing trends and 55.3% of topics had decreasing trends that these hot and cold topics represent three categories: application, methodology, and technology. The contributions of this paper can be utilized in the growing field of Twitter-based research and are beneficial to researchers, educators, and publishers. INDEX TERMS Literature review, social media, survey, text mining, topic modeling, Twitter.
To combat health disinformation shared online, there is a need to identify and characterize the prevalence of topics shared by trolls managed by individuals to promote discord. The current literature is limited to a few health topics and dominated by vaccination. The goal of this study is to identify and analyze the breadth of health topics discussed by left (liberal) and right (conservative) Russian trolls on Twitter. We introduce an automated framework based on mixed methods including both computational and qualitative techniques. Results suggest that Russian trolls discussed 48 health-related topics, ranging from diet to abortion. Out of the 48 topics, there was a significant difference (p-value ≤ 0.004) between left and right trolls based on 17 topics. Hillary Clinton’s health during the 2016 election was the most popular topic for right trolls, who discussed this topic significantly more than left trolls. Mental health was the most popular topic for left trolls, who discussed this topic significantly more than right trolls. This study shows that health disinformation is a global public health threat on social media for a considerable number of health topics. This study can be beneficial for researchers who are interested in political disinformation and health monitoring, communication, and promotion on social media by showing health information shared by Russian trolls.
Privacy needs and stigma pose significant barriers to lesbian, gay, bisexual, and transgender (LGBT) people sharing information related to their identities in traditional settings and research methods such as surveys and interviews. Fortunately, social media facilitates people’s belonging to and exchanging information within online LGBT communities. Compared to heterosexual respondents, LGBT users are also more likely to have accounts on social media websites and access social media daily. However, the current relevant LGBT studies on social media are not efficient or assume that any accounts that utilize LGBT-related words in their profile belong to individuals who identify as LGBT. Our human coding of over 16,000 accounts instead proposes the following three categories of LGBT Twitter users: individual, sexual worker/porn, and organization. This research develops a machine learning classifier based on the profile and bio features of these Twitter accounts. To have an efficient and effective process, we use a feature selection method to reduce the number of features and improve the classifier’s performance. Our approach achieves a promising result with around 88% accuracy. We also develop statistical analyses to compare the three categories based on the average weight of top features.
In Colorado, meat processing and packing industries profit from the low-wage labor of foreign born workers and refugees in particular. Scholars and journalists have examined the hazardous and environmentally unjust workplace conditions in meatpacking, and detailed refugee struggles in North American resettlement geographies. Our research builds from this work to examine how multi-scalar geopolitical processes shape processes of refugee resettlement and refugee labor in Colorado’s meatpacking industries. Methods for this work include analysis of secondary data and twenty-two semi-structured interviews with various actors knowledgeable about refugee resettlement and/or agricultural production in Colorado. We argue various intersecting geopolitical processes—from immigration raids of meatpacking plants to presidential-level xenophobic discourses and ensuing immigration policies—interact to impact refugee resettlement and participation in the meat production sector. Moreover, while the U.S.’s neoliberal model of outsourcing resettlement to non-governmental organizations (NGOs) has been widely critiqued, we argue NGO employees, many of whom identify as foreign-born and/or refugees, work to build connection and belonging among refugees in challenging resettlement environments. We suggest a feminist geopolitics approach, which examines how the “global” and the “intimate” are deeply intertwined, is a useful perspective for understanding complicated racialized spaces in the rural United States, including efforts to build connections and empower refugee identities.
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