The dissemination of the practice of collaborative authorship (coauthorship) in Brazil and in the international scientific community has been accompanied by an increasing occurrence of frauds, manipulations and other deviations in the assignment of responsibility for a scientific paper. This article discusses the criteria for authorship attribution, the reasons for the growing indices of coauth...

The Author Identification task for PAN 2016 consisted of three different Sub-tasks: authorship clustering, authorship links and author diarization. We developed a machine learning approaches for two of three of these tasks. For the two authorship related tasks we created various sets of feature spaces. The challenge was to combine these feature spaces to enable the machine learning algorithms t...

Discussions about authorship often arise in multi-centre clinical trials. Such trials may involve up to hundreds of contributors of whom some will eventually co-author the final publication. It is, however, often impossible to involve all contributors in the manuscript process sufficiently for them to qualify for authorship as defined by the International Committee of Medical Journal Editors. T...

Recommender systems try to facilitate the decision making process of users, by recommending products such as movies, music and news articles. This work uses a user based recommender system to predict redemption probabilities of different gift cards. That is, the probability that a user redeems a gift card in a store, given that he or she receives it. This work is a base for ranking gift cards i...

An experiment was conducted to determine the effectiveness of three invitation and incentive combinations in a web-based survey. A stratified convenience sample of 434 researchers who were target users of a collaboratory for earthquake engineering was randomly divided into three experimental conditions: (a) a $5 bill sent with the survey instructions via first class mail, (b) a $5 gift certific...