Table 1.

Usage comparison between guest users and registered users in VIADS

	Guest Users	Registered Users
Register	N/A	√
Log in	N/A	√
Upload test data sets	√	√
Select algorithm	√	√
Tune thresholds to filter data sets	√	√
Generate summary views >= thresholds	√	√
Generate comparison views >= thresholds	√	√
Export analytic results	√	√
Test data sets and analytic results	Deleted at the end of the visit or deleted >= 24 h	Saved on the server side for at least 5 years (free); can be deleted by users manually
Access to the saved results	N/A	√ + VIADS maintenance personnel
Log out	N/A	√
Web site visit log records	Kept	Kept