Recommendation systems are critical tools for online retailers in their pursuit of enhanced operational performance and improved shopper experience. As such, firms invest heavily to improve their algorithms. Notwithstanding these efforts, there is usually a serious omission of demand-timing...

Small-scale farmer is defined by the domestic and foreign experts and scholars. They point out that since the fragmentation of production and the diseconomy of scale in small-scale farmer is inconsistent with the characteristics of scale and technology of modern agricultural production, it is...

College students' social network is critical because it could influence students' academic performance, attrition, and even suicide attempt. Unfortunately, the college students' social network is not easy to be collected. The existing methods (e.g., survey, online social network web sites, and...

Large-scale directed social network data often involve degree heterogeneity, reciprocity, and transitivity properties. A sensible network generating model should take these features into consideration. To this end, we propose a popularity scaled latent space model for the large-scale directed...