Event detection is the process of identifying significant occurrences or changes in data streams, such as social media posts, news articles, or sensor readings. This technique helps in recognizing patterns or anomalies that may indicate important events, like natural disasters, political changes, or public sentiment shifts. By utilizing algorithms and machine learning, event detection systems can automatically filter and analyze large volumes of information. This allows organizations to respond quickly to emerging situations, enhancing decision-making and improving situational awareness in fields like emergency management, finance, and public safety.