Extracting Knowledge from Large Social Key Valued Data Journal title: International Journal of Machine Learning and Networked Collaborative Engineering Authors: Palvadi Srinivas Kumar Subject(s): Mechanics, Ophthalmology, Biology, Information Science & Library Science, Education & Educational Research, Engineering, Electrical & Electronic, Engineering, Multidisciplinary, Engineering, Environmental, Automation & Control Systems, Materials Science, Multidisciplinary, Sport Sciences, Imaging Science & Photographic Technology