Distinguishing Degrees of Compositionality in Compound Splitting for Statistical Machine Translation Marion Weller, Fabienne Cap, Stefan Müller, Sabine Schulte im Walde, Alexander Fraser The paper presents an approach to morphological compound splitting that takes the degree of compositionality into account. We apply our approach to German noun compounds and particle verbs within a German-English SMT system, and study the effect of only splitting compositional compounds as opposed to an aggressive splitting. A qualitative study explores the translational behaviour of non-compositional compounds.