6
|
PP 1/333 (1) DIGITAL TECHNOLOGY FOR DATA GENERATION FOR PPP
Example: Leaf discoloration in potato (PP 1/135 Phytotoxicity assessment)
.
Observation number
Digital technology
Reference values
1
Chlorosis
Chlorosis
2
Yellow veins
Yellow veins
3
Yellow spots
Yellow spots
4
Yellow spots
Yellow spots
5
Whitening
Yellow spots
Reference Values
Chlorosis
Yellow veins
Yellow spots
Whitening
Digital Technology
Chlorosis
1
0
0
0
Sum row 1
=
1
Yellow veins
0
1
0
0
Sum row 2
=
1
Yellow spots
0
0
2
1
Sum row 3
=
3
Whitening
0
0
0
0
Sum col 4
=
0
Sum col 1
=
1
Sum col 2
=
1
Sum col 3
=
2
Sum col 4
=
1
GP in green and not correct predictions in red.
R
2
(coefficient of determination)
Example: number of larvae
Observation number
Digital technology
Reference values
1
1
0
2
2
2
3
4
4
Marginal
= (
1
×
1
) + (
1
×
1
) + (
3
×
2
) + (
0
×
1
) =
8
GP
=
4;
N
obs
=
5
K
=
4
5
8
5
2
1
8
5
2
=
0.71
R
2
=
1
N
obs
i
=
1
RV
i
DT
i
±
2
N
obs
i
=
1
RV
i
RV
±
2
RV
=
1
N
obs
N
obs
i
=
1
RV
i
=
ReferenceValuesaverage
DT
=
1
N
obs
N
obs
i
=
1
DT
i
=
DigitalTechnologyobservationsaverage
R
2
=
1
(
0
1
)
2
+ (
2
2
)
2
+ (
4
4
)
2
(
0
2
)
2
+ (
2
2
)
2
+ (
4
2
)
2
=
0.88