Scoring scan results

   In BullScan, a security must normally fulfill every criteria in a scan
for it to be included in the results. But it is also possible to rank
securities based on how many criteria they fulfill.

If you untick the "Match All Criteria" checkbox, found on the scan
criteria tab of the scan properties, then a security needs to only meet
one or more criteria to appear in the results. Each security will be
assigned a score out of 100 based on how many criteria are matched. Eg.
By default, if a security meets three out of four criteria then it will
get a score of 75. By default, results are sorted by score.

Figure 1. Pivot point scan with match all unticked.

This can be helpful, however there may be some criteria that you want
to always find, and other criteria that are optional. When you untick
"match all criteria" two new columns appear in the criteria list.
(Shown in figure 1). The 'required' setting specifies that a particular
column must be matched. This can be modified by right-clicking on the
row and selecting required.

In the pivot point example above, we may want to set the first two
criteria as required - so that only pivot points are found, but the
price range is optional. (With higher scores assigned to securities
inside the price range, and lower scores to those outside the price
range)

The other column, importance sets the relative weight that the criteria
has for scoring. (Note: If a column is marked as required then it does
not participate in scoring.) So instead of marking columns as required,
you could just set some as high importance and others as low
importance. 

Using these ideas together, the pivot point example can be modified as
shown below. Two price range criteria have been added. One for prices
between $2 and $5. A second for prices between $1 and $6. If the price
is between $2 and $5 then the security will get a high score. If it is
just outside of that range then it will get a lower score, and it is
outside the $1 and $6 range then it will still get shown, but with a
much lower score. 

Figure 2. Pivot point modified to rank prices.

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Peter Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List BullCharts Staff Joined: 09 Sep 2004 Location: Australia Posts: 241	Post Options Post Reply Quote Peter Report Post Quote Reply Topic: Scoring scan results Posted: 28 Jan 2005 at 10:17am
	In BullScan, a security must normally fulfill every criteria in a scan for it to be included in the results. But it is also possible to rank securities based on how many criteria they fulfill. If you untick the "Match All Criteria" checkbox, found on the scan criteria tab of the scan properties, then a security needs to only meet one or more criteria to appear in the results. Each security will be assigned a score out of 100 based on how many criteria are matched. Eg. By default, if a security meets three out of four criteria then it will get a score of 75. By default, results are sorted by score. Figure 1. Pivot point scan with match all unticked. This can be helpful, however there may be some criteria that you want to always find, and other criteria that are optional. When you untick "match all criteria" two new columns appear in the criteria list. (Shown in figure 1). The 'required' setting specifies that a particular column must be matched. This can be modified by right-clicking on the row and selecting required. In the pivot point example above, we may want to set the first two criteria as required - so that only pivot points are found, but the price range is optional. (With higher scores assigned to securities inside the price range, and lower scores to those outside the price range) The other column, importance sets the relative weight that the criteria has for scoring. (Note: If a column is marked as required then it does not participate in scoring.) So instead of marking columns as required, you could just set some as high importance and others as low importance. Using these ideas together, the pivot point example can be modified as shown below. Two price range criteria have been added. One for prices between $2 and $5. A second for prices between $1 and $6. If the price is between $2 and $5 then the security will get a high score. If it is just outside of that range then it will get a lower score, and it is outside the $1 and $6 range then it will still get shown, but with a much lower score. Figure 2. Pivot point modified to rank prices.