Our alternative measures -parse likelihood and perplexity -indicate that the hypothesised SUs score similarly across the configurations.
parse scores are slightly down on the gold-standard (these are negative logs, so closer to zero is more probable), whilst perplexity scores are more noticeably down  (the lower the score, the better the LM models the input) compared to gold, and the standard deviations indicate more variance within the output SU perplexities.