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Search Relevance

Search relevance is a hard problem. Satisfying the user information needs across a multitude of different factors and business requirements may seem daunting, but do not despair! This Search Relevance Training teaches you how to design, develop, and configure your open source search engine to maximize how well the search results fit the user information need. Join us as we explore the milestones of search relevance to the deep internals of Apache Lucene and Elasticsearch.
Exercises and war stories from real-world problems and solutions are included.

Next Public Training:

15th-16th-17th February 2023
3:00-7:00 PM GMT

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840 £

Deadline: 31st January 2023 | 11:59 PM (GMT)

If you can’t participate, you can easily ask for private training by contacting us!
If you are looking for different topics to train on you can look at our full training schedule and find whatever suits the best to you!

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1x Search Relevance [Elasticsearch] – Training
Price: 840 GBP

By Purchasing a Ticket You Accept our Training’s Terms and Conditions.

Skills You Will Gain

• Deep understanding of how query-matching work;s
• Deep understanding of how search result ranking works;
• Capacity of customizing and tuning your system relevance function;
• Better debugging/troubleshooting ability;
• How to measure the search quality of your engine.


• Familiarity with search engine technologies;
• Familiarity with Elasticsearch.

Intended Audience

Technical Managers, Technical Leads, Software Engineers, Developers, Information Retrieval Passionates.

// search relevance training

Our Trainers

Alessandro Benedetti


Alessandro has been involved in designing and developing search-relevant solutions from 2010.
Over the years he has worked on various projects, with various open source technologies aiming to build search solutions able to satisfy the user information needs, often integrating such solutions with machine learning and artificial intelligence technologies.

Andrea Gazzarrini


Andrea Gazzarini is a curious software engineer, mainly focused on the Java language and Search technologies. With more than 15 years of experience in various software engineering areas, his adventure in the search world began in 2010, when he met Apache Solr and later Elasticsearch.

// search relevance training

Full Programme

  • Introduction to Information Retrieval

  • Apache Lucene

  • Elasticsearch

  • The Inverted Index

  • Mapping and Text Analysis

  • Apache Lucene scoring and document similarity

  • Validate API

  • Explain API

  • Query DSL

  • Leaf query clauses

  • Emphasis on Multi Match Query Clause

  • Field centric vs term centric approach

  • Compound Query Clauses

  • Emphasis on Disjunction Max

  • Emphasis on Function Score

  • Additive and Multiplicative boost functions and queries

  • Distributed search relevance considerations

  • Search Quality Evaluation: how to test your relevance

  • Learning to Rank: a machine learning approach for relevance

  • Language Modelling and vector-based search: the neural approach to relevance

  • Search Relevance War Stories

Would you like to schedule a training for your Team?

Our trainings are meant for different targets ( business, developer and everything in between), and are individual/small groups/classroom-based.
We offer different levels of flexibility to make sure the training course will be a perfect fit for your requirements 




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    Alessandro provided an extremely personalised and highly engaging 1-to-1 training, and kept extreme patience to explain and proof details of lucene and elasticsearch internals in his teaching. Overall we discussed a lot of things in capacity, the guidance made me build strong foundations and moved quickly into advanced areas. It has been a pleasure learning under his guidance.
    Vivek Atwal
    Sr. NLP Engineer