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  1. Regular article

    Measuring economic activity in China with mobile big data

    Emerging trends in the use of smartphones, online mapping applications, and social media, in addition to the geo-located data they generate, provide opportunities to trace users’ socio-economic activities in a...

    Lei Dong, Sicong Chen, Yunsheng Cheng, Zhengwei Wu, Chao Li and Haishan Wu

    EPJ Data Science 2017 6:29

    Published on: 6 November 2017

  2. Regular article

    Sentiment analysis methods for understanding large-scale texts: a case for using continuum-scored words and word shift graphs

    The emergence and global adoption of social media has rendered possible the real-time estimation of population-scale sentiment, an extraordinary capacity which has profound implications for our understanding o...

    Andrew J Reagan, Christopher M Danforth, Brian Tivnan, Jake Ryland Williams and Peter Sheridan Dodds

    EPJ Data Science 2017 6:28

    Published on: 30 October 2017

  3. Regular article

    Novel and topical business news and their impact on stock market activity

    We propose an indicator to measure the degree to which a particular news article is novel, as well as an indicator to measure the degree to which a particular news item attracts attention from investors. The n...

    Takayuki Mizuno, Takaaki Ohnishi and Tsutomu Watanabe

    EPJ Data Science 2017 6:26

    Published on: 11 October 2017

  4. Regular article

    Gaining historical and international relations insights from social media: spatio-temporal real-world news analysis using Twitter

    The immense growth of the social Web, which has made a large amount of user data easily and publicly available, has opened a whole new spectrum for research in social behavioral sciences. However, as the volum...

    Vanessa Peña-Araya, Mauricio Quezada, Barbara Poblete and Denis Parra

    EPJ Data Science 2017 6:25

    Published on: 6 October 2017

  5. Regular article

    Estimating local commuting patterns from geolocated Twitter data

    The emergence of large stores of transactional data generated by increasing use of digital devices presents a huge opportunity for policymakers to improve their knowledge of the local environment and thus make...

    Graham McNeill, Jonathan Bright and Scott A Hale

    EPJ Data Science 2017 6:24

    Published on: 2 October 2017

  6. Regular article

    The effect of Pokémon Go on the pulse of the city: a natural experiment

    Pokémon Go, a location-based game that uses augmented reality techniques, received unprecedented media coverage due to claims that it allowed for greater access to public spaces, increasing the number of peopl...

    Eduardo Graells-Garrido, Leo Ferres, Diego Caro and Loreto Bravo

    EPJ Data Science 2017 6:23

    Published on: 15 September 2017

  7. Regular article

    Data-driven modeling of collaboration networks: a cross-domain analysis

    We analyze large-scale data sets about collaborations from two different domains: economics, specifically 22,000 R&D alliances between 14,500 firms, and science, specifically 300,000 co-authorship relations be...

    Mario V Tomasello, Giacomo Vaccario and Frank Schweitzer

    EPJ Data Science 2017 6:22

    Published on: 6 September 2017

  8. Regular article

    Rapid rise and decay in petition signing

    Contemporary collective action, much of which involves social media and other Internet-based platforms, leaves a digital imprint which may be harvested to better understand the dynamics of mobilization. Petiti...

    Taha Yasseri, Scott A Hale and Helen Z Margetts

    EPJ Data Science 2017 6:20

    Published on: 29 August 2017

  9. Regular article

    Comparison of traffic reliability index with real traffic data

    Existing studies have developed different indices based on various approaches including network connectivity, delay time and flow capacity, estimating the traffic reliability states from different angles. Howe...

    Limiao Zhang, Guanwen Zeng, Shengmin Guo, Daqing Li and Ziyou Gao

    EPJ Data Science 2017 6:19

    Published on: 25 August 2017

  10. Regular article

    The shape of collaborations

    The structure of scientific collaborations has been the object of intense study both for its importance for innovation and scientific advancement, and as a model system for social group coordination and format...

    Alice Patania, Giovanni Petri and Francesco Vaccarino

    EPJ Data Science 2017 6:18

    Published on: 24 August 2017

  11. 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

  12. 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

    The Erratum to this article has been published in EPJ Data Science 2017 6:21

  13. 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

  14. 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

  15. 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

  16. 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

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