In this paper we describe the results of experiments contrasting syntactic phrase indexing with statistical phrase indexing
for Dutch texts. Our results showed that we at least need a compound splitting algorithm for good quality retrieval for Dutch
texts. If we then add either syntactic or statistical phrases, performance generally improves, but this efiect is never statistically
significant. If we compare syntactic vs. statistical phrase indexing, syntactic phrases are slightly superior to statistical
phrases, particularly at high precision. At higher recall levels syntactic and statistical phrases are equally efiective.
However, since a compound splitting algorithm requires a dictionary and knowledge about constraints on compound formation,
a purely non-linguistic indexing strategy, with or without phrases, does not seem to be very efiective for Dutch.