The LKB is approximately 1.82 times slower than ALE 4.0, and the experimental version implemented for this study is approximately 1.054 times slower than ALE 4.0.
the experimental system produces a run-time parser that is 5.4% slower than ALE after having compiled out the Dedekind-MacNeille completion in advance, but is still more than 40% faster than the LKB, a commonly used system that caches them on-line.