Table 5: The queries used for mining user group for evaluating our methods.

User group 1 (Mac)MacBookMac miniiMacMacintosh
User group 2 (perfume)Chanel no. 5Lancôme miracleDior meBurberry touch
User group 3 (notebook)AsusDellLenovoAcer
User group 4 (computers)HPDellLenovoAcer
User group 5 (handbags)ChanelGucciPradaLouis Vuitton