*** PAPER SUBMISSION DEADLINE EXTENDED TO 1 JULY ***

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Motivation
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Nowadays, the huge amount and variety of user generated contents available in the Web open a wide range of opportunities to enhance information retrieval and e-commerce applications. Opinions and reviews about products, annotations and bookmarks on multimedia resources, and friend relations in social networks are just a few examples of personal information sources to be exploited in order to both improve the user's experience and increase the companies' revenues in online search and commerce activities.

As in its previous editions, SMUC 2011 aims at becoming a major international forum for researchers and practitioners from several information and knowledge management areas, such as text/data mining, information extraction, and information retrieval/filtering, which focus their work on user-generated contents in Social Media.

For SMUC workshop, we identify four main research themes into which the above research problems can be categorized: Searching in Social Media, Mining Social Media, Opinion Mining & Sentiment Analysis, and Multimedia Processing and Retrieval. For all of them, we are interested in developing and testing intelligent systems and applications, involving innovative research from the fields of user modeling, personalization, recommendation, information visualization, and business intelligence, to name a few. Different research lines, backgrounds, perspectives and degrees of expertise will be present at the workshop, and thus very interesting multidisciplinary discussions, collaborations and work synergies between the workshop attendees are expected as one of the main outcomes of the event.

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Topics of interest
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SMUC workshop represents a multidisciplinary forum for researchers and practitioners that work on knowledge extraction, management and exploitation in Social Media, and belong to different, but complementary fields such as Web (content/structure/usage) mining, information retrieval, opinion mining and sentiment analysis, user modeling, personalization and recommendation, and multimedia processing and retrieval.

Topics of interest include, but are not limited to:

* Searching in Social Media
- Social search and ranking algorithms
- Multi-entity search
- Multifaceted search
- Distributed and high performance algorithms: scalability and efficiency

* Mining Social Media
- Knowledge discovery in Social Media
- Social network analysis/mining, community detection and evolution
- Collaborative tagging analysis/mining
- Topic detection, and trend discovery
- Influence, trust, and privacy analysis
- Spamming, phishing, and vandalism detection
- Cross-lingual and cross-domain text mining

* Opinion Mining and Sentiment Analysis
- Opinion extraction, classification, summarization, and visualization
- Irony detection
- Plagiarism detection of duplicate or near-duplicate opinions
- Temporal sentiment analysis
- Cross-lingual and cross-domain sentiment analysis
- Blog analysis, and micro-blog mining
- Product review analysis

* Multimedia processing and retrieval in Social Media
- Multimedia information extraction and retrieval in Social Media
- Multimodal retrieval
- Audio, music and video (clip) processing and analysis
- Context-based multimedia retrieval
- Detection of cyber-bullying, cyber-stalking, cyber-pedophilia

* Intelligent systems & applications in Social Media
- User modeling, personalization, and recommender systems
- Market analysis, and Business Intelligence applications (direct marketing, branding, etc.)

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Organizing Committee
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* Iván Cantador, Universidad Autónoma de Madrid, Spain
* Francisco M. Carrero, BrainSINS & Universidad Europea de Madrid, Spain
* José C. Cortizo, BrainSINS & Universidad Europea de Madrid, Spain
* Paolo Rosso, Universidad Politécnica de Valencia, Spain
* Markus Schedl, Johannes Kepler University, Austria
* José A. Troyano, Universidad de Sevilla, Spain

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Contact information
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Contact e-mail: smuc2011 [at] easychair [dot] org