Dr. Liang-Chi Hsieh is a researcher dedicated to large-scale multimedia system design and algorithm. His research topics cover image automatic annotation, multimedia indexing and search, large-scale multimedia data processing. He received Computer Science Ph.D. degree from Graduate Institute of Networking and Multimedia, National Taiwan University. He is also an experienced and active programmer dedicated to Open Source Software. He actively participates in Free and Open Source Software communities by code contribution, articles translation. He also helps translate some articles related to open source and Creative Commons from English to Chinese.