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  1. Regular article

    A roadmap for the computation of persistent homology

    Persistent homology (PH) is a method used in topological data analysis (TDA) to study qualitative features of data that persist across multiple scales. It is robust to perturbations of in...

    Nina Otter, Mason A Porter, Ulrike Tillmann, Peter Grindrod and Heather A Harrington

    EPJ Data Science 2017 6:17

    Published on: 9 August 2017

  2. Regular article

    Instagram photos reveal predictive markers of depression

    Using Instagram data from 166 individuals, we applied machine learning tools to successfully identify markers of depression. Statistical features were computationally extracted from 43,950 participant Instagra...

    Andrew G Reece and Christopher M Danforth

    EPJ Data Science 2017 6:15

    Published on: 8 August 2017

  3. Regular article

    Early detection of promoted campaigns on social media

    Social media expose millions of users every day to information campaigns - some emerging organically from grassroots activity, others sustained by advertising or other coordinated efforts. These campaigns cont...

    Onur Varol, Emilio Ferrara, Filippo Menczer and Alessandro Flammini

    EPJ Data Science 2017 6:13

    Published on: 5 July 2017

  4. Regular article

    Inferring social influence in transport mode choice using mobile phone data

    A longitudinal mobile phone data that include both location and communication logs is analyzed to infer social influence in terms of ego-network effect in the commute mode choice. The results show that person’...

    Santi Phithakkitnukoon, Titipat Sukhvibul, Merkebe Demissie, Zbigniew Smoreda, Juggapong Natwichai and Carlos Bento

    EPJ Data Science 2017 6:11

    Published on: 14 June 2017

  5. Commentary

    Topological analysis of data

    Propelled by a fast evolving landscape of techniques and datasets, data science is growing rapidly. Against this background, topological data analysis (TDA) has carved itself a niche for the analysis of datase...

    Alice Patania, Francesco Vaccarino and Giovanni Petri

    EPJ Data Science 2017 6:7

    Published on: 6 June 2017

  6. Regular article

    Contact activity and dynamics of the social core

    Humans interact through numerous communication channels to build and maintain social connections: they meet face-to-face, make phone calls or send text messages, and interact via social media. Although it is k...

    Enys Mones, Arkadiusz Stopczynski and Sune Lehmann

    EPJ Data Science 2017 6:6

    Published on: 31 May 2017

  7. Regular article

    The happiness paradox: your friends are happier than you

    Most individuals in social networks experience a so-called Friendship Paradox: they are less popular than their friends on average. This effect may explain recent findings that widespread social network media ...

    Johan Bollen, Bruno Gonçalves, Ingrid van de Leemput and Guangchen Ruan

    EPJ Data Science 2017 6:4

    Published on: 18 May 2017

  8. Regular article

    Improving official statistics in emerging markets using machine learning and mobile phone data

    Mobile phones are one of the fastest growing technologies in the developing world with global penetration rates reaching 90%. Mobile phone data, also called CDR, are generated everytime phones are used and rec...

    Eaman Jahani, Pål Sundsøy, Johannes Bjelland, Linus Bengtsson, Alex ‘Sandy’ Pentland and Yves-Alexandre de Montjoye

    EPJ Data Science 2017 6:3

    Published on: 16 May 2017

    The Erratum to this article has been published in EPJ Data Science 2017 6:8

  9. Regular article

    BiFold visualization of bipartite datasets

    The emerging domain of data-enabled science necessitates development of algorithms and tools for knowledge discovery. Human interaction with data through well-constructed graphical representation can take spec...

    Yazhen Jiang, Joseph D Skufca and Jie Sun

    EPJ Data Science 2017 6:2

    Published on: 20 April 2017

  10. Regular article

    Applying Hidden Markov Models to Voting Advice Applications

    In recent times, a phenomenon that threatens the representative democracy of many developed countries is the low voter turnout. Voting Advice Applications (VAAs) are used to inform citizens about the political...

    Marilena Agathokleous and Nicolas Tsapatsoulis

    EPJ Data Science 2016 5:34

    Published on: 13 December 2016

  11. Regular article

    Generic temporal features of performance rankings in sports and games

    Many complex phenomena, from trait selection in biological systems to hierarchy formation in social and economic entities, show signs of competition and heterogeneous performance in the temporal evolution of t...

    José A Morales, Sergio Sánchez, Jorge Flores, Carlos Pineda, Carlos Gershenson, Germinal Cocho, Jerónimo Zizumbo, Rosalío F Rodríguez and Gerardo Iñiguez

    EPJ Data Science 2016 5:33

    Published on: 25 November 2016

  12. Regular article

    Estimating suicide occurrence statistics using Google Trends

    Data on the number of people who have committed suicide tends to be reported with a substantial time lag of around two years. We examine whether online activity measured by Google searches can help us improve est...

    Ladislav Kristoufek, Helen Susannah Moat and Tobias Preis

    EPJ Data Science 2016 5:32

    Published on: 8 November 2016

  13. Regular article

    The emotional arcs of stories are dominated by six basic shapes

    Advances in computing power, natural language processing, and digitization of text now make it possible to study a culture’s evolution through its texts using a ‘big data’ lens. Our ability to communicate reli...

    Andrew J Reagan, Lewis Mitchell, Dilan Kiley, Christopher M Danforth and Peter Sheridan Dodds

    EPJ Data Science 2016 5:31

    Published on: 4 November 2016

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