Yun Sing Koh is currently a senior lecturer at the Department of Computer Science, University of Auckland. After completing a Bachelor's degree in Computer Science and Masters in Software Engineering at University Malaya, she went on to do her PhD in Computer Science at University of Otago, New Zealand. Her current research interests include data mining, machine learning, and information retrieval. Most of her current research revolves around finding rare patterns/rules within datasets and data stream mining. She has also developed a keen interest in several other areas including particle swarm optimization, social network mining, and online auction fraud detection.