User guide

Reports
19-9
Band Weighting means that band intensity as well as position will be used
when comparing the similarity of your samples. Select Yes to use band
weighting when generating the report.
Select No to use only band position as the basis for comparing lane similarity.
Comparison Method
The method for computing similarity in Quantity One is the Dice Coefficient.
The formula for the Dice Coefficient is:
where S and T are vectors representing two lanes in the same band set that are
being compared.
To compute similarity, a vector is constructed that represents the bands
identified in the lane. The vector depends on the comparison options (see
above) selected. If the search was done on classified (matched) bands only,
then the vector S contains B elements (S = (s1, s2, s3 ... sB)), where B is the
number of band types in the lane's band set. The values for s1, s2, s3 ... sB
have the following values:
Weighting Off Search
s
i
= 1 if the i'th band type is found in the lane.
s
i
= 0 if it is not found.
Weighting On Search
If the band set has a normalizing band type, then:
s
i
= The normalized density of the band assigned to the i'th band type.
sim 200
Min s
i
t
i
( , )
i 1=
B
∑
s
i
t
i
+( )
i 1=
B
∑
---------------------------------
×=
dist 100 sim–=