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Offline Search Quality Evaluation: Rated Ranking Evaluator (RRE)

Introduction With Rated Ranking Evaluator Enterprise approaching soon, we take the occasion of explaining in details why Offline Search Quality Evaluation is so important nowadays and what you can do already with the Rated Ranking Evaluator open-source libraries. More news will come soon as we are approaching the V1 release date. Stay tuned! Search Quality…

Synonyms Tips And Tricks

Synonyms and Stopwords: Vademecum

In this post we’ll cover two additional synonyms scenarios and we’ll try to summarise all previous tips in a coincise form. Following the approach of the previous posts [1] [2] [3], everything can be applied both to Apache Solr and Elasticsearch. Preconditions Synonyms and stopwords at query time: this is not just a “theoretical” constraint;…

Synonyms Tips And Tricks

Still Synonyms + Stopwords?? Mamma mia!

The Context Brief recap of where we arrived in the preceding article: we had the following synonyms and stopwords settings: synonyms = {“out of warranty”,”oow”} stopwords = {“of”} Both of those filters were configured exclusively at query-time; the synonym filter first and then the stopwords filter. Using the built-in StopFilter we had a synonym detection…

Synonyms Tips And Tricks

Synonyms + Stopwords?? OMG!

The Context The scenario description is quite simple: we want to use synonyms and stopwords. Following the path of our previous article, we will introduce an additional component in the analysis chain: a StopFilter, which, as the name suggests, removes a set of words from an incoming token stream. We will use the following data…

Apache Solr Elasticsearch Tips And Tricks

Apache Solr/Elasticsearch: How to Manage Multi-term Concepts out of the Box?

This flash blog post will address a very specific and common problem : how to manage entities/concepts composed by multiple terms in a vanilla Apache Solr/Elasticsearch instance ( no plugins or extensions to install). The (deployment) context An Elasticsearch or Apache Solr infrastructure where you cannot install third-party components (e.g. plugins, filters, query parsers). This can…

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