Instituto de Políticas y Bienes Públicos (IPP) CSIC, Working Paper 2014-02
Matthijs den Besten, Catalina Martínez, Nicolas Besson, Stéphane Maraut & Jean-Michel Dalle
In this article, we focus on the need for “human computing” in data-rich ecosystems, notably as a consequence of data variety and typically for name disambiguation, and explore ways to manage it via online platforms for paid crowdsourcing. Based on several studies of Amazon Mechanical Turk, a well-established platform for matching data treatment tasks to human beings willing to carry them out, we illustrate the difficulties involved as requesters compete for the attention of workers. We suggest that researchers should shift from a technical analysis and tentative resolution of human...
Instituto de Políticas y Bienes Públicos (IPP) CSIC, Working Paper 2014-01
José L. Oviedo & Alejandro Caparrós
We compare contingent valuation and choice modeling with field and eye-tracker data. Contrary to previous research, results yield significantly different structural models. These divergences remain for modified formats that minimize visual and cognitive differences between formats. We also find divergent results concerning information processing. In choice modeling, respondents devote more time to attributes, including the bid, although total answering time does not vary. Presenting several questions with varying attribute levels works for choice modeling but not for contingent valuation....