1. Sociology of science: Big data deserve a bigger audience.

    Nature 482(7385):308 (2012) PMID 22337040

  2. Sociology of science: Big data deserve a bigger audience.

    Nature 482(7385):308 (2012) PMID 22337040

  3. How random are online social interactions?

    Scientific reports 2:633 (2012) PMID 22953054 PMCID PMC3433691

    The massive amounts of data that social media generates has facilitated the study of online human behavior on a scale unimaginable a few years ago. At the same time, the much discussed apparent randomness with which people interact online makes it appear as if these studies cannot reveal predict...
  4. How random are online social interactions?

    Scientific reports 2:633 (2012) PMID 22953054 PMCID PMC3433691

    The massive amounts of data that social media generates has facilitated the study of online human behavior on a scale unimaginable a few years ago. At the same time, the much discussed apparent randomness with which people interact online makes it appear as if these studies cannot reveal predict...
  5. Management fads, pedagogies, and other soft technologies

    Journal of Economic Behavior & Organization 72(1):290 (2009)

    We present a model for the diffusion of management fads and other technologies which lack clear objective evidence about their merits. The choices made by non-Bayesian adopters reflect both their own evaluations and the social influence of their peers. We show, both analytically and computa...
  6. Novelty and collective attention.

    PNAS 104(45):17599 (2007) PMID 17962416 PMCID PMC2077036

    The subject of collective attention is central to an information age where millions of people are inundated with daily messages. It is thus of interest to understand how attention to novel items propagates and eventually fades among large populations. We have analyzed the dynamics of collective ...
  7. Novelty and collective attention.

    PNAS 104(45):17599 (2007) PMID 17962416 PMCID PMC2077036

    The subject of collective attention is central to an information age where millions of people are inundated with daily messages. It is thus of interest to understand how attention to novel items propagates and eventually fades among large populations. We have analyzed the dynamics of collective ...
  8. Protecting the privacy of human subjects.

    Science 307(5713):1200 (2005) PMID 15736302

  9. Protecting the privacy of human subjects.

    Science 307(5713):1200 (2005) PMID 15736302

  10. A method for finding communities of related genes.

    PNAS 101 Suppl 1:5241 (2004) PMID 14757821 PMCID PMC387302

    We present a method for creating a network of gene co-occurrences from the literature and partitioning it into communities of related genes. The way in which our method identifies communities makes it likely that the component genes of each community will be related by their function. The method...
  11. A method for finding communities of related genes.

    PNAS 101 Suppl 1:5241 (2004) PMID 14757821 PMCID PMC387302

    We present a method for creating a network of gene co-occurrences from the literature and partitioning it into communities of related genes. The way in which our method identifies communities makes it likely that the component genes of each community will be related by their function. The method...
  12. Information flow in social groups

    Physica A: Statistical Mechanics and its Applic... 337(1):327 (2004)

    We present a study of information flow that takes into account the observation that an item relevant to one person is more likely to be of interest to individuals in the same social circle than those outside of it. This is due to the fact that the similarity of node attributes in social net...
  13. Competitive dynamics of web sites

    Journal of Economic Dynamics and Control 27(11):2195 (2003)

    We present a dynamical model of web site growth in order to explore the effects of competition among web sites and to determine how they affect the nature of markets. We show that under general conditions, as the competition between sites increases, the model exhibits a sudden transition fr...
  14. Protecting privacy while revealing data.

    Nature Biotechnology 20(4):332 (2002) PMID 11923827

  15. Protecting privacy while revealing data.

    Nature Biotechnology 20(4):332 (2002) PMID 11923827

  16. A literature based method for identifying gene-disease connections.

    Proceedings / IEEE Computer Society Bioinformat... 1:109 (2002) PMID 15838128

    We present a statistical method that can swiftly identify, from the literature, sets of genes known to be associated with given diseases. It offers a comprehensive way to treat alias symbols, a statistical method for computing the relevance of the gene to the query, and a novel way to disambigua...
  17. A literature based method for identifying gene-disease connections.

    Proceedings / IEEE Computer Society Bioinformat... 1:109 (2002) PMID 15838128

    We present a statistical method that can swiftly identify, from the literature, sets of genes known to be associated with given diseases. It offers a comprehensive way to treat alias symbols, a statistical method for computing the relevance of the gene to the query, and a novel way to disambigua...
  18. Restart strategies and Internet congestion

    Journal of Economic Dynamics and Control 25(3):641 (2001)

    We recently presented a methodology to quantitatively reduce the average time and variance in the time required to execute electronic transactions in a network environment such as the Internet. In the language of portfolio theory, time to complete a transaction and its variance replace the ...
  19. Multiagent Cooperative Search for Portfolio Selection

    Games and Economic Behavior 35(1):124 (2001)

    We present a new multiagent model for the multiperiod portfolio selection problem. A system of cooperative agents divide initial wealth and follow individual worst-case optimal investment strategies from random portfolios, sharing their final profits and losses. The multiagent system achiev...
  20. Status competition and performance in work groups

    Journal of Economic Behavior & Organization 43(1):35 (2000)

    We study the dynamics of a work group whose members value not only compensation, but also having a high status relative to their peers. Compensation takes the form of a fixed salary plus a bonus based on group performance. Status is determined both by contributing to group output and by non...