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Finto AI is a service for automated subject indexing. The last part of its punny name, AI, actually refers to automated indexing. Finto AI can be used via the form at ai.finto.fi or API. A more detailed description of the API can be found here ... You can use the form by copy-pasting text on the appropriate field and then clicking the button for results. In the drop-down menu you can choose the language and analysis method for the text. Finto AI can be used to index text in three languages: Finnish, Swedish and English. IT currently gives suggestions based on the General Finnish Ontology.

From Annif API to Finto AI, the production version

Finto AI is based on Annif, a tool for automated subject indexing. You can read more about using Annif in it's GitHub Wiki. To work, Annif needs a controlled vocabulary (subject headings, thesaurus or classification) and existing metadata - Annif can then be used to assign subjects for new documents. This tool is built upon a combination of existing natural language processing and machine learning tools including Maui, Omikuji, fastText and Gensim. It is designed to be multilingual and it can support any subject vocabulary (in SKOS or a simple TSV format). It can be used either via a command-line interface or a microservice-style REST API.  In fact, this demo demo API under Api.annif.org and the demo form at annif.org are the basis of Finto AI.

 Technical details, summary

  • Finto AI uses version 0.46 of Annif

  • We offer a neural network based backend for projects (nn_ensemble), trained with a broad training set from Finna discovery service

  • Finto AI uses a recent version of the General Finnish Ontology with place names included (version 2020.1.Diotima)

  • Finto AI offers the following projects yso-fi, yso-sv, yso-en (implemented with nn_ensemble)

  • Finto AI works over a secure HTTPS connection. 

Future developments

In the near future, after some further research and development, we’ll aim to offer a learn method via the API, so that human-corrected results could be used to teach Annif and improve results. Also, we're taking Annif into production by offering the API under the name Finto AI - stay tuned!


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