An Optimization Method for the Geolocation Databases of Internet Hosts Based on Machine Learning

Table 7

The results of Wilcoxon test for the geolocation database IP138.

(a) Ranks

		Mean rank	Sum of ranks
After − before
Negative ranks	0^a	.00	.00
Positive ranks	10^b	5.50	55.00
Ties	0^c
Total	10

After < before.
^bAfter > before.
^cAfter = before.

(b) Test statistics^a

	After − before
	−2.812^b
Asymp. sig. (2-tailed)	.005

Wilcoxon signed ranks test.
^bBased on negative ranks.