Assessing the Potential of Digital Collaborative Plat-forms in Fostering Neighbourhood Participation through Volunteerism -- Social Network Sentiment Analysis and Message Clustering -- Migration Issues in Russian Twitter: Attitudes to Migrants, Social Problems and Online Resources -- Personal Illness Experience in Russian Social Media: Between Willingness to Share and Stigmatization -- An innovative online tool to self-evaluate and compare Participatory Research Projects -- Social Norm spreading in real and virtual environments: pro-social versus pro-self norm -- On Internet Resilience in Small Island States -- Science cafés and science shops for public engagement,- Use of information and communication technologies for obtaining public social services in Russia -- Reinforcement Learning for Data Preparation with Active Reward Learning -- Machine learning and algorithmic collusion -- The Online Bystander Effect: evidence from a study on synchronous Facebook communications -- Collective Intelligence and the Geopolitical Crossroads in Central-Eastern Europe. Review of the Selected Research Methods -- A Network Neutral alternative to Free Basics -- Intransitiveness in games and random walks -- A Self-Organized Criticality Method for the Study of Color Avoiding Percolation -- A Metric for the Fair Comparison of ISPs -- Network Presentation of Texts and Clustering of Messages -- Intrusion Detection and Avoidance for a Heterogeneous Cluster of Web Sites -- Improving User Experience by Browser Extensions: A New Role of Public Service Media? -- The International Register of Ideas and Innovations. A visionary social network to develop innovation and protect IP using blockchain and Proof-of-Originality Algorithm -- Towards a Trusted Virtual Smart Cities Operation Center using the Blockchain Mirror Model -- Monitoring an Environment using Wireless Sensor Network -- Life and Death of Data in Data Lakes: Preserving Data Usability and Responsible Governance -- Mapping Heterogeneous Textual Data: a Multidimensional Approach based on Spatiality and Theme -- Analysis of Herd Behavior in Stock Prices using Machine Learning -- Personalized Music Experience for the Wellbeing of Elderly People -- Cognitive and physiological response for health monitoring in an aging population: a multi-modal system.