Direct marketing response models seek to identify individuals most likely to respond to marketing solicitations. Such models are commonly evaluated on classification accuracy and some measure of fit-to-data. Given large customer files and budgetary limitations, only a fraction of the total file is typically selected for mailing promotional material. This desired mailing-depth presents potential...

We introduce BigBang, a new Python toolkit for analyzing online collaborative communities such as those that build open source software. Mailing lists serve as critical communications infrastructure for many communities, including several of the open source software development communities that build scientific Python packages. BigBang provides tools for analyzing mailing lists. As a demonstrat...

W develop, estimate, and test a response model of order timing and order volume decisions of catalog customers and derive a Bayes rule for optimal mailing strategies. The model integrates the when and how much components of the response; incorporates the mailing decision of the firm; and uses a Bayesian framework to determine the optimal mailing rule for each catalog customer. The Bayes rule we...

One of the benefits firms can derive from using Open Source Software (OSS) is informal development collaboration, and the primary tool for collaboration and coordination are group mailing lists. The purpose of the paper is modelling mailing lists behaviour in OSS projects, using a set of descriptors that could inform about their quality and their evolution. As a case study, a mailing list focus...

Oscillation criteria for second order nonlinear neutral differential equations. 1 M.M.A.El-sheikh, 2 R.Sallam and 3 N.Mohamady 1Department of Mathematics , Faculty of Science, Taibah University,Madinah ,Saudi Arabia. 1,2 Department of Mathematics , Faculty of Science, Menofia University, Egypt. 3 Department of Mathematics , Faculty of Science, Benha University, Egypt. E-mail address: msheikh_19...

The article analyzes how researchers evaluate the quality of information in Internet e-mailing lists and whether the embeddedness of academic e-mailing lists in offline networks of a scientific community is related to it. The idea is that embeddedness gives researchers more opportunities to build up a reputation through contributing high-quality information to the group. Survey and archive data...

In this work we use ROC (Receiver Operating Characteristic) analysis to evaluate customer subgroups detected by different machine learning approaches in a marketing database. A direct mailing model with a marginal cost per mailing and an average expected profit per new customer has been assumed. In order to identify optimal mailing strategies for different marketing situations, we introduce the...

This document explains why mass unsolicited electronic mail messages are harmful in the Internetworking community. It gives a set of guidelines for dealing with unsolicited mail for users, for system administrators, news administrators, and mailing list managers. It also makes suggestions Internet Service Providers might follow.