Automatic image/video annotation is still imperfect and error-prone due to the semantic gap. As a result, collaborative image/video tagging (such as Flickr and Youtobe) has become very popular for people to share, tag and search images/videos. With the exponential growth of such social media, it has become increasingly important to have mechanisms that can support more effective searching from large-scale collections of social media. With the fast development of hardware technologies, users are looking for more and more sophisticated functions for social media processing and semantic modeling. To support the advanced functions, more sophisticated algorithms should be developed for understanding, processing and modeling the underlying semantics of social medias that may contain more than one medium of signals simultaneously. As a result, there are urge demands for more sophisticated algorithms for semantic modeling and processing of social medias. With the recent progress on computation infrastructure such as GFS, MapReduce, Cloud Computing and CUDA, it is possible for us to develop more effective techniques for social medial processing and semantic modeling. The topics for this special issue will include, but are not limited to:

• Advanced semantic models for social media processing, especially for multimedia social media data

• Social media computation and applications on advanced semantic models, such as clustering, reasoning and retrieval

• Novel semantic models for non-traditional signals, such as touch models for haptic devices, gesture models for touch screens, and 3D object models

• Automatic extraction algorithms for semantic models, either model driven or data driven

• Computation algorithms and infrastructures for the problems of model extraction and applications

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http://asp.eurasipjournals.com/manuscript according to the submission schedule. They should specify the manuscript as a submission to the “Special Issue on Social Media Processing and Semantic Modeling” in the cover letter. All submissions will undergo initial screening by the Guest Editors for fit to the theme of the Special Issue and prospects for successfully negotiating the review process.