Randomization tests for quantifying species importance to ecosystem function

Randomization tests for quantifying species importance to ecosystem function

importance to ecosystem function Nicholas J. Gotelli*, Werner Ulrich and Fernando T. Maestre Department of Biology, University of Vermont, Burlington, VT 05405, USA; Department of Animal Ecology, Nicolaus Copernicus University in Toruń, Gagarina 9, 87-100 Toruń, Poland; and Departamento de Biologı́a y Geologı́a, Área de Biodiversidad y Conservación, Escuela Superior de Ciencias Experimentales y T...

Randomization Tests for Relational Learning

Algorithms for relational learning and proposi-tional learning face different statistical challenges. In contrast to propositional learners, rela-tional learners often make statistical inferences about data that exhibit linkage and autocorrela-tion. Recent work has shown that these characteristics of relational data can bias inferences made by relational learners. In this paper, we develop a no...

Randomization tests -1- Randomization tests in language typology

Two of the major assumptions that statistical tests make (random sampling, distribution of the data) are not tenable for most typological data. We suggest to use randomization tests, which avoid these assumptions. Randomization is applicable to frequency data, rank data, scalar measurements and ratings, so most typological data can be analyzed with the same tools. We provided a free computer pr...

Biodiversity , Species Composition and Ecosystem Function

Randomization tests for restricted alternating treatments designs.

Alternating Treatments Designs (ATD) with random assignment of the treatments to the measurement times provide very powerful single-case experiments. However, complete randomization might cause too many consecutive administrations of the same treatment to occur in the design. In order to exclude these possibilities, an ATD with restricted randomization can be used. In this article we provide a ...