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ALT: Another Likelihood Tool

Although there are many phylogenetic reconstruc-tion tools available [1][4], their purpose is in generalto solve specific problems or to apply a limited num-ber of evolution models.We present a new program, ALT — AnotherLikelihood Tool, which implements Felsenstein’smaximum likelihood algorithm [2][3] two importantcharacteristics: it is written in a highly modular<lb...

ALT text and basic accessibility

Recent surveys have shown that the majority of websites are not accessible. Despite legal obligations and the importance of the internet for disabled people, most websites fail to reach a basic level of accessibility, yet web developers are not short of accessibility guidelines and recommendations. This preliminary study consists of a meta-review of web accessibility studies in order to identif...

On Preprocessing the ALT-Algorithm

In this thesis, we study the preprocessing phase of the ALT algorithm. ALT is a well known preprocessing-based speed-up technique for Dijkstra’s algorithm, which allows fast computations of shortest paths in large scale road networks. The preprocessing of the ALT algorithm has some degree of freedom, in that it must select a subset of nodes in the graph, called landmarks, that fulfill a special...