Core Concepts
LLMs like chatGPT can generate synthetic Instagram captions, but balancing fidelity and utility is crucial for effective sponsored content detection.
Abstract
This study explores the use of Large Language Models (LLMs) like chatGPT to create synthetic Instagram captions for sponsored content detection. The research investigates the challenges of balancing fidelity and utility in generating realistic captions that can effectively identify undisclosed advertisements on social media platforms. The study evaluates different prompt strategies, metrics for assessing caption quality, network connectivity analysis, and machine learning model performance using synthetic data.
Abstract:
Investigates using LLMs to enforce legal requirements for disclosing sponsored content on social media.
Evaluates fidelity and utility of synthetic Instagram captions for sponsored content detection.
Highlights conflicts between model effectiveness and authenticity in synthetic data generation.
Introduction:
LLMs present opportunities and challenges in social media.
Investigates potential misuse of LLMs in generating fake news.
Focuses on detecting undisclosed ads on Instagram through synthetic data.
Methodology:
Explores prompt engineering techniques for generating synthetic data.
Evaluates metrics like caption composition, embedding similarity, and network metrics.
Analyzes real Instagram datasets for comparison.
Empirical Observations:
Synthetic captions mimic real posts but lack diversity and nuanced language.
Imitation strategy shows better representation of real data characteristics.
Network analysis reveals differences in hashtag and user tag relationships.
Downstream Task Performance:
Models trained on synthetic data perform well in detecting disclosed ads.
Struggle with identifying undisclosed ads due to vocabulary diversity.
Combining synthetic and real data improves model performance.
Summary and Discussions:
Balancing fidelity and utility is essential when creating synthetic datasets.
Prompt design alone may not ensure high-quality synthetic data.
Post-processing methods can enhance diversity, distribution, and connectivity of generated data.
Stats
Large Language Models (LLMs) raise concerns about lowering the cost of generating texts that could be used for unethical or illegal purposes.
Instagram dataset includes 200k posts by micro/mega influencers from 2011 to 2022.
Model temperature setting impacts uniqueness of captions.
Quotes
"Generating faithful synthetic data has the potential to mitigate issues related to limited API access."
"Our investigation shows conflicting objectives between model effectiveness and authenticity in evaluating synthetic datasets."