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One problem of data-driven answer extraction in open-domain factoid question answering is that the class distribution of labeled training data is fairly imbalanced. In an ordinary training set, there are far more incorrect answers than correct answers. The class-imbalance is, thus, inherent to the classification task. It has a deteriorating effect on the performance of classifiers trained by standard machine learning algorithms. They usually have a heavy bias towards the majority class, i.e. the class which occurs most often in the training set. In this paper, we propose a method to tackle class imbalance by applying some form of cost-sensitive learning which is preferable to sampling. We present a simple but effective way of estimating the misclassification costs on the basis of class distribution. This approach offers three benefits. Firstly, it maintains the distribution of the classes of the labeled training data. Secondly, this form of meta-learning can be applied to a wide range of common learning algorithms. Thirdly, this approach can be easily implemented with the help of state-of-the-art machine learning software.
In the context of a Nordic Conference on Bilingualism, it can be a rewarding task to look at issues such as language planning, policy and legislation from a perspective of the southern neighbours of the Nordic world. This paper therefore intends to point attention towards a case of societal multilingualism at the periphery of the Nordic world by dealing with recent developments in language policy and legislation with regard to the North Frisian speech community in the German Land of Schleswig-Holstein. As I will show, it is striking to what degree there are considerable differences in the discourse on minority protection and language legislation between the Nordic countries and a cultural area which may arguably be considered to be part of the Nordic fringe - and which itself occasionally takes Scandinavia as a reference point, e.g. in the recent adoption of a pan-Frisian flag modelled on the Nordic cross (Falkena 2006).
The main focus of the paper will be on the Frisian Act which was passed in the Parliament of Schleswig-Holstein in late 2004. It provides a certain legal basis for some political activities with regard to Frisian, but falls short of creating a true spirit of minority language protection and/or revitalisation. In contrast to the traditions of the German and Danish minorities along the German-Danish border and to minority protection in Northern Scandinavia (in particular to Sámi language rights), the approach chosen in the Frisian Act is extremely weak and has no connotation of long-term oriented language-planning, let alone a rights-based perspective.
The paper will then look at policy developments in the time since the Act was passed, e.g. in the Schleswig-Holstein election campaign in 2005, and on latest perceptions of the Frisian language situation in the discourse on North Frisian Policy in Schleswig-Holstein majority society. In the final part of the paper, I will discuss reasons for the differences in minority language policy discourse between Germany and the Nordic countries, and try to provide an outlook on how Frisian could benefit from its geographic proximity to the Nordic world.