where ρ is the correlation between x1 and x2. For each random number we sample ρ from the uniform distribution (0, 0.5). We set this correlation range because we want to illustrate the performance of the indirect mapping in a setting of low correlation between the two data types. In order to represent noisy data types we added independent standard Gaussian noise to both x1 and x2. We treat x1 a...

In this paper we describe a random walk clustering technique to address the Website Boundary Detection (WBD) problem. The technique is fully described and compared with alternative (breadth and depth first) approaches. The reported evaluation demonstrates that the random walk technique produces comparable or better results than those produced by these alternative techniques, while at the same t...

This paper discusses basic security aspects of distributed random number generation in potentially hostile environments. The goal is to outline and discuss a distributed approach, which comes to question in the case of attacker being able to target one or several mobile devices. We define communication paths and attacker models instead of providing technical details of local generation. This pa...

The C source code associated with the Simulation 101 preconference workshop (offered at the 2006 and 2007 Winter Simulation Conferences) is presented here. This paper begins with general instructions for downloading, compiling, and executing the software. This is followed by sections on four groups of the software, categorized by functionality: libraries, Monte Carlo simulations, discrete-event...

This manuscript presents a new free Modelica library, named DESLib and composed of four packages: RandomLib, DEVSLib, SIMANLib and ARENALib. DESLib has been designed and implemented to facilitate the description of discrete-event models using the Parallel DEVS formalism (using DEVSLib), and to facilitate the process-oriented modeling of logistic systems (using SIMANLib and ARENALib). SIMANLib a...

Two estimators of the control variate type for survivor growth from remeasured point samples are proposed and compared with more familiar estimators. The large reductions in variance, observed in many cases for estimators constructed with control variates, are also realized in this application. A simulation study yielded consistent reductions &ariante which were often 50% and occasionally over ...

We survey recent results on some one-and two-dimensional patterns generated by random permutations of natural numbers. In the first part, we discuss properties of random walks, evolving on a one-dimensional regular lattice in discrete time n, whose moves to the right or to the left are induced by the rise-and-descent sequence associated with a given random permutation. We determine exactly the ...