The one-sided t-test ( Hull , 1993 ) at significance level 0.05 indicated that the improvement on Trec5C is not statistically significant .
using statistical testing in the evaluation of retrieval experimentsquot
D Hull
Furthermore , the improvement on Trec5C appears to be caused by big improvements for a small number of queries . The one-sided t-test ( Hull , 1993 ) at significance level 0.05 indicated that the improvement on Trec5C is not statistically significant . It seems surprising that disambiguation does not help at all for Trec6C .
The one-sided t-test ( @@CITATION ) at significance level 0.05 indicated that the improvement on Trec5C is not statistically significant .