Sales forecasting is a common topic in business. Our task is predicting a famous drug company daily sales for 1,115 stores located across Germany for six weeks in advance. Store sales are influenced by many factors. Our project aims to create a robust prediction model. Based on Gradient Boosting and Random Forest, our model performs well in this sales forecasting competition with resulting in r...

© 2002 Canadian Medical Association or its licensors Complaints: (1) A reviewer calls to say he will never review another paper for CMAJ because we accepted a paper he had urged us to reject in view of the authors’ undisclosed and close relationship with a pharmaceutical company. (2) A letter writer complains that we edited her letter so severely that the main point was utterly lost. (3) An aut...

the main purpose of this paper is to investigate the performance of nigerian insurance companies using data envelopment analysis (dea). because of the unavailability of the required data, the study is limited to ten nigerian insurance companies for the period of five years from 2008 to 2012. the input employed were commission expenses and management expenses, while premium and investment income...

Through implementation of its 2000 pharmaceutical reform, the South Korean government expected to reduce the cost of medications and improve service levels, medical appropriateness of care, and drug effectiveness. However, despite the reform's lofty goals, unintended consequences have distorted the supply of medical services and spending. These consequences have included increasing the use of u...