Dr. Mehmet Çakırtaş completed his doctorate in the field of Islamic History at Ankara University, Ankara, Turkey in 2007. Between 2007 and 2011 he worked as an administrator in various units of the Radio and Television Supreme Council, Turkey. He worked as a Consultant at the Turkish Prime Ministry between 2011-2014. Between 2014-2017 he worked as the Head of the International Relations and Monitoring and Evaluation Department at the Radio and Television Supreme Council, Ankara, Turkey. He participated in the development of the Digital Recording and Analysis System in Turkey. Between 2017-2020, he worked as Executive Assistant of the Turkish Minister of Justice, the Turkish Deputy Prime Minister and the Turkish Minister of Health. Currently, he is the Head of the International Relations Department at the Radio and Television Supreme Council in Turkey. 2018-2019’da Ankara He worked as part-time instructor at Yildirim Beyazit University, Ankara, Turkey. His research interests include Islamic History, social media analysis and the study of radical Islamic groups.Dr. Ozdemir received his B.S. and M.S. degrees in electrical engineering from METU, Ankara, Turkey, in 1996 and 1998, and his Ph.D. degree in electrical engineering from Syracuse University, USA, in 2005.  He also obtained a Business Management Certificate from University of Toronto in 2010. Dr. Ozdemir has an industry experience of 15+ years, where he developed systems for CATV and wireless communication industries.  He is currently with Department of Electrical and Electronics Engineering, Istanbul Medipol University, Turkey.  His recent research interests include the application of deep learning to the wireless communication systems, such as jamming detection and spectrum sensing.

• Chapter 1. Twenty Years of Network Science: A Bibliographic and Co-Authorship Network Analysis.- Chapter 2. Impact of Locational Factors on Business Ratings/Reviews: A Yelp and TripAdvisor Study.- Chapter 3. Identifying Reliable Recommenders in Users’ Collaborating Filtering and Social Neighbourhoods.- Chapter 4. Safe Travelling Period Recommendation to High Attack Risk European Destinations based on Past Attack Information.- Chapter 5. Analyzing Cyber Influence Campaigns on YouTube using YouTubeTracker.- Chapter 6. Blog Data Analytics Using Blogtrackers.- Chapter 7. Using Social Media Surveillance in order to Enhance the Effectiveness of Crew Members in Search and Rescue Missions.- Chapter 8. Visual Exploration and Debugging of Machine Learning Classification over Social Media Data.- Chapter 9. Efficient and Flexible Compression of Very Sparse Networks of Big Data.- Chapter 10. Weather Big Data Analytics: Seeking Motifs in Multivariate Weather Data.- Chapter 11. Analysis of Link Prediction Algorithms in Hashtag Graphs.