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Contact information

Address:ETSI Informáticos (antigua Facultad de Informática) Ontology Engineering Group (OEG) Departamento de Inteligencia Artificial Universidad Politécnica de Madrid Campus de Montegancedo, sn Boadilla del Monte, 28660 Madrid Phone number:910672915 Website: Email:


KeyQ is what you were searching for. Now let us search for you.

Technological Offers type


Available from: 2021

Smart searching across millions of documents

Linear scalability and consistent response times

Our tests on corpora of millions of documents show a consistent response time. It can be used by means of a web application or a REST API.
As a web application, it offers a sophisticated but intuitive means of writing search terms.

Demo here.

Description of the technological basis

For storage and recovery, it uses the open-source Apache solr technology standard and KeyQ, our terminology extractor.

The web interface can be adapted to any kind of device (mobile phone, PC, tablet, etc.), using Bootstrap.

Business needs / application

Companies with large volumes of documents, in all kinds of formats (PDF, Word, etc.). Searching for information in their document repositories is a need shared by all kinds of companies.

Competitive advantages

Compared to the basic version, KeyQ (terminology extraction and online command searching, with the corpus stored in the memory), KeyQ-solr distributes the corpus documents to the hard disks of one or several machines using Apache solr technology. Its other features include:

– Filters: partial searches, upper/lower-case sensitivity, file metadata.
– Granularity selector for the information retrieved: page, paragraph or sentence.
– Detailed statistics of the corpus texts.
– Advanced visual analysis to identify thematic groupings.
– Handling of multiple corpora in different languages.
– Terminology management. Collaborative terminology evaluator (consensus among experts).
– Searches with logical operators.

Past performance references

We have handled corpora in fields such as:

  • Biology: tens of thousands of scientific articles on Covid-19.
  • Law: large documents with hundreds of pages, with instant access to the most relevant page/paragraph/sentence for a particular search.
  • Energy and the environment: thousands of European Parliament documents in different formats.

KeyQ was developed in the Artificial Intelligence R&I Centre (AI.nnovation Space) (joint UPM-Accenture centre) between 2020 and 2021.


  • Software registration

Stage of development

  • Concept
  • Research
  • Lab prototype
  • Industrial prototype
  • Production


KeyQ-solr is what you were searching for. Now let us search for you.