Climate communication scientists search for effective message strategies to engage the ambivalent public in support of climate advocacy. The personal experience of wildfire is expected to render climate change impacts more concretely, pointing to a potential message strategy to engage the public. This study examined Twitter discourse related to climate change during the onset of 20 wildfires in California between years 2017-2021. We content analyzed tweets geographically and temporally proximal to the occurrence of wildfires to discover framings and examined how mean frequencies in climate framings changed before and after fires. Results identified three predominant climate framings: making explicit links between wildfire and climate change, suggesting climate actions, and attributing climate change to adversities besides wildfires. Mean tweet frequencies linking wildfire with climate change and attributing adversities increased significantly after the onset of fire while urging climate action tweets did not. Temporal analysis of tweet frequencies of tweets linking wildfires to climate change showed that discussion increased after the onset of a fire but persisted typically no more than one to two weeks. External real-world events happening simultaneously during wildfires also triggered climate discussions. Our findings contribute to identifying how the personal experience of wildfire shapes Twitter discussion related to climate change, and how these narratives change over time before and after wildfires, leading to insights into critical time points after wildfire for implementing message strategies to increase public engagement on climate change impacts and policy.
Collaborative data analytics is becoming increasingly important due to the higher complexity of data science, more diverse skills from different disciplines, more common asynchronous schedules of team members, and the global trend of working remotely. In this demo we will show how Texera supports this emerging computing paradigm to achieve high productivity among collaborators with various backgrounds. Based on our active joint projects on the system, we use a scenario of social media analysis to show how a data science task can be conducted on a user friendly yet powerful platform by a multi-disciplinary team including domain scientists with limited coding skills and experienced machine learning experts. We will present how to do collaborative editing of a workflow and collaborative execution of the workflow in Texera. We will focus on data-centric features such as synchronization of operator schemas among the users during the construction phase, and monitoring and controlling the shared runtime during the execution phase.
We consider data-visualization systems where data is stored in a database, and a middleware layer translates a frontend request to a SQL query to the database to compute visual results. We focus on the problem of handling visualization requests with predetermined time constraints. We study how to rewrite the original query by adding hints and/or conducting approximations so that the total time is within the time constraint. We develop a novel middleware solution called Maliva, which adopts machine learning (ML) techniques to solve the problem. It applies the Markov Decision Process (MDP) model to decide how to rewrite queries, and uses training instances to learn an agent that can make a sequence of decisions judiciously for an online request. Our experiments on both real and synthetic datasets show that compared to the baseline approach that relies on the original SQL query, Maliva performs significantly better in terms of both the chance of serving requests interactively, and query execution time.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.