Volume 15, Number 1, January 2012

• 
  Qi Yu, Athman Bouguettaya: Multi-attribute optimization in service selection. 1-31
• 
  Jing Yang, Gabriel Pui Cheong Fung, Wei Lu, Xiaofang Zhou, Hong Chen, Xiaoyong Du: Finding superior skyline points for multidimensional recommendation applications. 33-60
• 
  Simon Harper, Alex Q. Chen: Web accessibility guidelines - A lesson from the evolving Web. 61-88
• 
  Hai Huang, Chengfei Liu, Xiaofang Zhou: Approximating query answering on RDF databases. 89-114

Volume 15, Number 2, March 2012

Content, Concept and Context Mining in Social Media

• 
  Heng Tao Shen, Xian-Sheng Hua, Jiebo Luo, Vincent Oria: Guest editorial: content, concept and context mining in social media. 115-116
• 
  Richong Zhang, Thomas T. Tran, Yongyi Mao: Opinion helpfulness prediction in the presence of "words of few mouths". 117-138
• 
  Ralitsa Angelova, Gjergji Kasneci, Gerhard Weikum: Graffiti: graph-based classification in heterogeneous networks. 139-170
• 
  Junjie Yao, Bin Cui, Yuxin Huang, Yanhong Zhou: Bursty event detection from collaborative tags. 171-195
• 
  Xiao Wu, Chong-Wah Ngo, Yi-Ming Zhu, Qiang Peng: Boosting web video categorization with contextual information from social web. 197-212
• 
  Halil Bisgin, Nitin Agarwal, Xiaowei Xu: A study of homophily on social media. 213-232

Volume 15, Number 3, May 2012

• 
  Xiaoming Zhang, Zi Huang, Heng Tao Shen, Yang Yang, Zhoujun Li: Automatic tagging by exploring tag information capability and correlation. 233-256
• 
  Jianqiang Li, Yu Zhao, Hector Garcia-Molina: A path-based approach for web page retrieval. 257-283
• 
  Murat Sensoy, Pinar Yolum: Automating user reviews using ontologies: an agent-based approach. 285-323
• 
  Wook-Shin Han, Divesh Srivastava, Ge Yu: Special issue: best papers of APWeb 2010. 325
• 
  Weiren Yu, Wenjie Zhang, Xuemin Lin, Qing Zhang, Jiajin Le: A space and time efficient algorithm for SimRank computation. 327-353
• 
  Qing Xie, Zi Huang, Heng Tao Shen, Xiaofang Zhou, Chaoyi Pang: Quick identification of near-duplicate video sequences with cut signature. 355-382

Volume 15, Number 4, July 2012

• 
  Jalal Mahmud, I. V. Ramakrishnan: Transaction models for Web accessibility. 383-408
• 
  Kan Yang, Xiaohua Jia: Data storage auditing service in cloud computing: challenges, methods and opportunities. 409-428
• 
  Yongjiao Sun, Ye Yuan, Guoren Wang: Top- $\boldsymbol{k}$ query processing over uncertain data in distributed environments. 429-446
• 
  Michael Nebeling, Michael Grossniklaus, Stefania Leone, Moira C. Norrie: XCML: providing context-aware language extensions for the specification of multi-device web applications. 447-481

Volume 15, Numbers 5-6, September 2012

Web-based Services and Information Systems

• 
  Lei Chen, Zhiguo Gong, Qing Li: Guest Editorial: Web-based services and information systems. 483-484
• 
  Khanh Nguyen, Jinli Cao: Top-k answers for XML keyword queries. 485-515
• 
  Zhuoming Xu, Yuyan Ni, Wenjie He, Lili Lin, Qin Yan: Automatic extraction of OWL ontologies from UML class diagrams: a semantics-preserving approach. 517-545
• 
  Lei Li, Yan Wang: The study of trust vector based trust rating aggregation in service-oriented environments. 547-579
• 
  Junjie Yao, Bin Cui, Gao Cong, Yuxin Huang: Evolutionary taxonomy construction from dynamic tag space. 581-602
• 
  Meng-Fen Chiang, Wen-Chih Peng, Philip S. Yu: Exploring latent browsing graph for question answering recommendation. 603-630
• 
  Paolo Cappellari, Roberto De Virgilio, Mark Roantree: Path-oriented keyword search over graph-modeled Web data. 631-661
• 
  Yanan Hao, Yanchun Zhang, Jinli Cao: A novel QoS model and computation framework in web service selection. 663-684
• 
  Vidura Gamini Abhaya, Zahir Tari, Peter Bertók: Building Web services middleware with predictable execution times. 685-744