EPJ Data Science: Topical issues

• Collective Behaviors and Networks
  Emilio Ferrara, Giovanni Luca Ciampaglia and Alessandro Flammini
• Advances in data-driven computational social sciences
  Santo Fortunato, Fosca Giannotti and Michael Macy
• Making Big Data work: Smart, Sustainable, and Safe Cities
• Collective Behaviors and Networks
• Scientific Networks and Success in Science
  Frank Schweitzer