Haystack 2019 Experience

This blog is a quick summary of my (subjective) experience at Haystack 2019 : the Search Relevance Conference, hosted in Charlottesville (Virginia, USA) from 24/04/2019 to 25/04/2019.References to the slides will be updated as soon as they become available. First of all my feedback on the Haystack Conference is extremely positive.From my perspective the conference … Continue reading Haystack 2019 Experience

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; … Continue reading Synonyms and Stopwords: Vademecum

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 … Continue reading Still Synonyms + Stopwords?? Mamma mia!

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 … Continue reading Synonyms + Stopwords?? OMG!

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

Rated Ranking Evaluator: Help the poor (Search Engineer)

A Software Engineer is always required to give his customers a concrete evidence about deliverables quality. A Search Engineer deals with a specialisation of such generic Software Quality, which is called Search Quality. What is Search Quality? And why is it so important in a search infrastructure? After all, the "Software Quality" should be omni-comprensive, … Continue reading Rated Ranking Evaluator: Help the poor (Search Engineer)