The Fifth International Conference on Information Science and Technology (ICIST 2015) will be held in Changsha, Hunan, China, during April 24–26, 2015, as a continuation of ICIST 2014 (Shenzhen), ICIST 2013 (Yangzhou), ICIST 2012 (Wuhan) and ICIST 2011 (Nanjing). ICIST 2015 aims to provide a high-level international forum for scientists, engineers and educators to present the state-of-the-art of research and applications in fields of information science and technology. The conference will feature plenary speeches given by world renowned scholars, regular sessions with broad coverage, and special sessions focusing on popular topics. Changsha is the capital and largest city of Hunan province in south-central China, located on the lower reaches of Xiang River, a branch of the Yangtze River. Changsha has rich historical heritages including old wall remains, tomb sites, religious temples and buildings. What earns the city its reputation among visitors are two things. One is a great man in recent history, Chairman Mao Zedong and the other is Yuelu Academy, a time-honored academic school perched on the scenic Yuelu Mountain. Xiang Cuisine is one of the Eight Cuisines in China and has a fine and delicate appearance and a spicy taste.