1. Goal: To use simultaneously data form different categorical and ratio scales.

1. Use of categorical and ratio data in different scales • 1. Goal:To use simultaneously data form different categorical and ratio scales. • 2. Solution: Defining an expandable libraries of: • Scale definitions – description of a scale. Each data point can be associated with only one scale. • Scale conversions – rules for conversion of a data point associated with a scale to a different scale 1

2. Scale definitions 2

3. Example for categorical and ratio data • Skin sensitization data • Scale 2 • GPMT • Strong • Moderate • Weak • Non Scale 1 EC3 LLNA Real values in range [0..100] • Scale 3 • Activity • Active • Non active • Scale 4 • Activity scale • Strong • Weak • Non • Scale 5 • BfR • A • B • C • Biodegradation data CO2 production Real values in range [0..100%] BOD 28 days MITI Real values in range [0..100%] • Ready degradable • Ready • Not ready 3

4. Example for defined scales Example 1 Example 2 Example 3 Example 4 4

5. Scale definition/conversion editor Library of defined scales Content of selected scale 5

6. Conversion definitions Rules in one conversion defines one directional conversion. If opposite conversion is possible, it is defined in separate conversion. 6

7. Conversions definition editor Library of defined conversions Contents of the selected conversion 7

8. Conversions definition editor Library of defined conversions Contents of the selected conversion 8

9. Conversions definition editor Library of defined conversions Contents of the selected conversion 9