Action Trigger Specificity and Its Impact on Information Retrieval by Social Media Bots1

Organizations increasingly rely on social media bots for real-time monitoring. Yet, configuring bots for effective information retrieval remains challenging. Too much data creates noise; too little risks missing insights. We address this trade-off by examining how “action triggers”—the search terms bots use— shape retrieval outcomes. We introduce volume-adjusted relevance, which weights relevance against retrieved volume, and explore three design dimensions: semiotic specificity (hashtags vs. no-hashtags), semantic specificity (hypernyms vs. hyponyms), and trigger expansion (single vs. paired terms). In a large-scale randomized field experiment on X, a custom-built master bot retrieved over 8 million posts using 204 triggers across 50 objectives for one week. Results show that hashtags improved volume-adjusted relevance, semantic specificity provided a limited benefit, and combining semantically related hashtags yielded the best performance. These findings advance understanding of bot-based retrieval and offer a framework for reducing noise, avoiding blind spots, and enhancing social media monitoring.