H - Algorithms
Date fields can be compared based on different levels.
The 0 line input tells the system what is considered as identical or not.
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One year range
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One month range
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One week range
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One day range
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One hour range
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One minute range
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One second range
If the two dates are identical, the similarity is 1.0
If the difference is greater than or equal to one unit, the similarity = 0.0
and in between, it is just a linear computation.
As an example, when the algorithm is set to "One day range" then 0.0 is the difference of 24 hours.
So if the difference is 6 hours then the similarity is 0.75
If the difference is 12 hours then the similarity is 0.5
If the difference is 18 hour then the similarity is 0.25
etc.
If the algorithm is "One month range" then 0.0 is the difference of 31 days.