skip to main content
US FlagAn official website of the United States government
dot gov icon
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
https lock icon
Secure .gov websites use HTTPS
A lock ( lock ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.


Title: AI-ML Analytics: A Comprehensive Investigation on Sentimental Analysis for Social Media Forensics Textual Data
Individuals spend a significant portion of their time on social media. It has become a platform for expression of feelings, sharing of ideas and connecting with other individuals using video and audio posts, textual data such as comments and descriptions and so on. Social media has a considerable impact on people’s daily life. In recent time, there is an enormous growth in number of people using Twitter and Instagram to share their emotions and sentiments which represents their actual feelings. In this work, we apply Machine Learning techniques on social media data to perform a comprehensive investigation to detect the risk of depression in people. Our work can help to detect various symptoms such sadness, loneliness, detachment etc. providing an insight for forensic analysts and law enforcement agencies about the person’s mental state. The experimental results show that Extra Tree Classifier performs significantly better over the other models in detecting the sentiment of people using social media data.  more » « less
Award ID(s):
1851890
PAR ID:
10500947
Author(s) / Creator(s):
Editor(s):
Arai, K. 
Publisher / Repository:
Springer
Date Published:
Journal Name:
Lecture Notes in Networks and Systems Intelligent Computing (LNNS 739)
ISBN:
978-3-031-37962-8
Format(s):
Medium: X
Location:
Switzerland, 2023
Sponsoring Org:
National Science Foundation
More Like this
  1. Loneliness is detrimental to well-being and is often accompanied by self-reported feelings of not being understood by other people. What contributes to such feelings in lonely people? We used functional MRI of 66 first-year university students to unobtrusively measure the relative alignment of people’s mental processing of naturalistic stimuli and tested whether lonely people actually process the world in idiosyncratic ways. We found evidence for such idiosyncrasy: Lonely individuals’ neural responses were dissimilar to those of their peers, particularly in regions of the default-mode network in which similar responses have been associated with shared perspectives and subjective understanding. These relationships persisted when we controlled for demographic similarities, objective social isolation, and individuals’ friendships with each other. Our findings raise the possibility that being surrounded by people who see the world differently from oneself, even if one is friends with them, may be a risk factor for loneliness. 
    more » « less
  2. Social media is a routine part of every-day life for millions of people worldwide. How does engaging with social media shape enduring memories for that experience? This question is important given the popularity of certain types of content on social media platforms, such as content widely known as “fitspiration”. Two experiments involving 510 US adults (mean age = 36.82) examined memory for food and fitness-related social media images that individuals write comments about, as well as memory for other images in the context. We demonstrate that commenting on social media images boosts memory for them and weakly affects memory for conceptually related images in the same context. Exploratory analyses revealed correlations between self-reported disordered eating symptomology and effects of commenting on memory. These findings demonstrate that how people engage with social media has implications for the enduring memories of that content and may relate to behaviors and attitudes in offline lives, such as eating and body image. 
    more » « less
  3. Social media has revolutionized communication, allowing people worldwide to connect and interact instantly. However, it has also led to increases in cyberbullying, which poses a significant threat to children and adolescents globally, affecting their mental health and well-being. It is critical to accurately detect the roles of individuals involved in cyberbullying incidents to effectively address the issue on a large scale. This study explores the use of machine learning models to detect the roles involved in cyberbullying interactions. After examining the AMiCA dataset and addressing class imbalance issues, we evaluate the performance of various models built with four underlying LLMs (i.e. BERT, RoBERTa, T5, and GPT-2) for role detection. Our analysis shows that oversampling techniques help improve model performance. The best model, a fine-tuned RoBERTa using oversampled data, achieved an overall F1 score of 83.5%, increasing to 89.3% after applying a prediction threshold. The top-2 F1 score without thresholding was 95.7%. Our method outperforms previously proposed models. After investigating the per-class model performance and confidence scores, we show that the models perform well in classes with more samples and less contextual confusion (e.g. Bystander Other), but struggle with classes with fewer samples (e.g. Bystander Assistant) and more contextual ambiguity (e.g. Harasser and Victim). This work highlights current strengths and limitations in the development of accurate models with limited data and complex scenarios. 
    more » « less
  4. Abstract Although tie strength is a significant theoretical concept in the field, recent work suggests that other dimensions of social ties may be important to consider. We build on this body of work to propose that situational forms of engagement with various interaction partners play a vital role in shaping feelings of loneliness. We anticipate that when engaging in direct forms of engagement (active engagement), the association between different types of social ties and loneliness will be minimal. In contrast, while engaging in less direct forms of engagement (passive engagement), the type of social tie may matter more in reducing loneliness. We test these expectations using original time-diary data capturing daily interactions and momentary feelings of loneliness. Results show that active engagement associates with reduced feelings of loneliness relative to passive engagement. We find that the benefit of active engagement over passive engagement is greatest among acquaintances and family members. We interpret this as indicating that active engagement is beneficial for establishing a sense of connection among some social ties that already exists for other social ties. These findings indicate that how we engage with others and the kinds of people we engage with jointly shape the benefits of social interaction. 
    more » « less
  5. Social media streams analysis can reveal the characteristics of people who engage with or write about different topics. Recent works show that it is possible to reveal sensitive attributes (e.g., location, gender, ethnicity, political views, etc.) of individuals by analyzing their social media streams. Although, the prediction of a user's sensitive attributes can be used to enhance the user experience in social media, revealing some attributes like the location could represent a threat on individuals. Users can obfuscate their location by posting about random topics linked to different locations. However, posting about random and sometimes contradictory topics that are not aligned with a user's online persona and posts could negatively affect the followers interested in her profile. This paper represents our vision about the future of user privacy on social media. Users can locally deploy a cyborg, an artificial intelligent system that helps people to defend their privacy on social media. We propose LocBorg, a location privacy preserving cyborg that protects users by obfuscating their location while maintaining their online persona. LocBorg analyzes the social media streams and recommends topics to write about that are similar to a user's topics of interest and aligned with the user's online persona but linked to other locations. 
    more » « less