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Modifying the Score

Build 1501 on 14/Nov/2017 This topic last edited on: 17/Mar/2016, at 16:49

Contents

Operator	Description	Example
s=N	Replace the predicate's score Z(Ri).Wi by an explicit value.	price<500{s=1000}
s+=N	Increase the predicate's score by a given value.	GUI{s+=100000}
s-=N	Decrease the predicate's score by a given value. Note: The score of a given predicate can be negative, but the final score of the document can never be lower than 0.	corporate/tree:"Top/Attributes/XXX" {s-=100000}
w=N	Replace the predicate's weight Wi by an explicit value.	design{w=10000}
w*=N	Multiply the predicate's weight by a given value.	design{w*=2}
w/=N	Divide the predicate's weight by a given value.	design{w/=2}

Please note the following:

•The score modifiers are applied in the same order as they appear. In the case of two conflicting modifiers (e.g. {s=1000,s=2000} ), the last one is applied.

•In the case when an explicit score (s=) is specified, the predicate's weight is ignored so the 'w' options have no effect.

•The explicit score should only be used for non-textual predicates (numeric values and categories) since this modifier completely ignores the ranking score class that was set when the document was indexed.