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Scoring in PLP

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Mafalda Correa
Mafalda Correa
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Posted on 12/04/2021 13:29:10

Hi,

In my PLP, I'm sorting the products by Score and then by Name. In a normal situation, where I have no search, I expected my products to simply be ordered alphabetically, however I have a product that is jumping to the top of the list because while all products have a score of zero, this one products has a score of 0.22.

The only thing this product seems to have different from the rest of the products is that it has no Assortment ID. However, I didn't expect that to add to the scoring of the product.

This is my query:

Is it the expected behaviour that having an empty Assortment ID would increase score? But then MatchAny AssortmentID does not?

Thank you


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Nicolai Pedersen
Posted on 12/04/2021 13:50:03
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You can try to disable the 2 assortment related expressions and see if it affects the score.

My guess is that Assortmentids isempty could be the source of the score.

 
Mafalda Correa
Mafalda Correa
Posted on 12/04/2021 13:53:44
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Yes, when I disable both expressions all the scores are 0.

That was my guess too based on what I was seeing, I just don't understand why the AssortmentID isEmpty would add score to the product while the other expressions don't.

 
Nicolai Pedersen
Posted on 12/04/2021 13:59:21
Reply

Scoring in Lucene!

Lucene searches for terms. And if a field does not have a value, it does noget get indexed for a given product. So in order to support searches like "isempty" we have to add a value to the lucene document i.e. "isempty" and then search for documents where the field is empty like assortmentids=isempty. That will give a scoring because there is an exact match on the value isempty.

So bottom line - is empty cannot be used without scoring happening. You might be able to set scoring to 0 on a custom version of the field when indexing and in that way force a 0 on this particular field.

BR Nicolai

 
Mafalda Correa
Mafalda Correa
Posted on 12/04/2021 15:51:37
Reply

Thank you for the explanation.

I think in this case the problem will solve itself because the product should probably have an AssortmentID, but it's good to know for future reference.

 

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