Saying Hello World with GReTL - A Solution to the TTC 2011 Instructive Case

This paper discusses the GReTL solution of the TTC 2011 Hello World case. The submitted solution covers all tasks including the optional ones.Comment: In Proceedings TTC 2011, arXiv:1111.440

Solving the TTC 2011 Reengineering Case with GReTL

This paper discusses the GReTL reference solution of the TTC 2011 Reengineering case. Given a Java syntax graph, a simple state machine model has to be extracted. The submitted solution covers both the core task and the two extension tasks.Comment: In Proceedings TTC 2011, arXiv:1111.440

Solving the TTC 2011 Compiler Optimization Case with GReTL

This paper discusses the GReTL solution of the TTC 2011 Compiler Optimization case. The submitted solution covers both the constant folding task and the instruction selection task. The verifier for checking the validity of the graph is also implemented, and some additional test graphs are provided as requested by the extension.Comment: In Proceedings TTC 2011, arXiv:1111.440

Income, consumption and remittances: Evidence from immigrants to Australia

For many countries, remittance behaviour by migrants is an important component of their overall international financial flows. To date, the empirical literature has analysed the propensity to remit as a function of migrants' socio-economic characteristics. However, no studies have fully addressed the empirical implications of remittance behaviour being determined in the broader context of migrants' labour, income and consumption allocation strategy. On the contrary, the migrant's income has almost always been treated as exogenous in this context. The aim of this study is to estimate a remittance equation that detects the main determinants of remittance behaviour while addressing endogeneity and reverse causality relationships between remittances, income, consumption and savings. Moreover, since a large share of individuals do not remit money at all, an instrumental variable variant of the double-hurdle selection model is proposed and estimated by LIML. A sending country perspective is adopted in the empirical analysis by considering the first cohort of the Longitudinal Survey of Immigrants to Australia. We find that endogeneity is substantial and that estimates obtained by the methods previously employed in the literature may be very misleading if given a behavioural interpretation. Our results confirm some theoretical predictions and shed light on others; notably, we show that selfish motives in remitters are at least as important as altruistic motives. --Double-hurdle model,migration,remittances

Econometrics with gretl. Proceedings of the gretl Conference 2009.

This book contains the articles presented at the first International gretl Conference, held on may 28-29, 2009 in Bilbao, Spain.Econometrics, gretl, open source, statistical software

Program Understanding: A Reengineering Case for the Transformation Tool Contest

In Software Reengineering, one of the central artifacts is the source code of the legacy system in question. In fact, in most cases it is the only definitive artifact, because over the time the code has diverged from the original architecture and design documents. The first task of any reengineering project is to gather an understanding of the system's architecture. Therefore, a common approach is to use parsers to translate the source code into a model conforming to the abstract syntax of the programming language the system is implemented in which can then be subject to querying. Despite querying, transformations can be used to generate more abstract views on the system's architecture. This transformation case deals with the creation of a state machine model out of a Java syntax graph. It is derived from a task that originates from a real reengineering project.Comment: In Proceedings TTC 2011, arXiv:1111.440