Exploring new ways of inservice teacher education: an action research project

The starting point of the paper is that there is a need to develop new ways of in service teacher education and to examine the nature of the university ‐ school partnerships in school development. In service teacher education needs to be participatory, based on a long‐term commitment to work together, moving from traditional teacher isolation towards a new, collaborative school culture. An essential idea in school development is that teachers take charge of curriculum development through an action research orientation. The process can be facilitated by university researchers in a relationship that is based on an equal status of the participants and mutual trust. These possibilities are explored in the OK school development project (1994‐98), conducted in collaboration with the University of Tampere and six schools in the Tampere region. The paper discusses the design of the project with reference to supporting the teacher's professional development towards interactive professionalism.     

Computing exact clustering posteriors with subset convolution

ABSTRACT

An exponential-time exact algorithm is provided for the task of clustering n items of data into k clusters. Instead of seeking one partition, posterior probabilities are computed for summary statistics: the number of clusters and pairwise co-occurrence. The method is based on subset convolution and yields the posterior distribution for the number of clusters in O(n3ⁿ) operations or O(n³2ⁿ) using fast subset convolution. Pairwise co-occurrence probabilities are then obtained in O(n³2ⁿ) operations. This is considerably faster than exhaustive enumeration of all partitions.