An individual-based model (IBM) of a spatiotemporal terrestrial ecological population is proposed. This model is spatially explicit and features the position of each individual together with another characteristic, such as the size of the individual, which evolves according to a given stochastic model. The population is locally regulated through an explicit competition kernel. The IBM is repres...

The choice of a basic modeling approach, either population-level or individual-based (IbM), is an important decision to be addressed according to the problem at hand. We present an IbM that simulates the dynamics of a bacterial bioreactor under different handling protocols. The main objective is to provide a simulator that will be easily understood, adjusted and used by non-experts. The model h...

The rapid growth of seismic, biological, and similar data sets has made computation and visualization an increasingly complex task. Due to the inherit architectural differences between supercomputing and visualization hardware, a system for realtime display of these data sets must be carefully designed. We present such a system, comprising all aspects of computation, communication, and visualiz...

This study proposes a word alignment model based on a recurrent neural network (RNN), in which an unlimited alignment history is represented by recurrently connected hidden layers. We perform unsupervised learning using noise-contrastive estimation (Gutmann and Hyvärinen, 2010; Mnih and Teh, 2012), which utilizes artificially generated negative samples. Our alignment model is directional, simil...

In this paper we present IBM Tivoli Monitoring, a systems management application that displays autonomic behavior at run time, and we focus on extending it in order to encompass the design and the deployment phases of the product life cycle. We review the resource model concept, illustrate it with an example, and discuss its role throughout the product life cycle. Then we introduce basic concep...

In 2004, IBM introduced a set of broad operations research-based initiatives designed to improve the efficiency and productivity of its global sales force. The first solution, OnTARGET, provides a set of analytical models designed to identify new sales opportunities at existing IBM accounts and at noncustomer companies. The second solution, the Market Alignment Program (MAP), optimally allocate...