The tool can be found here: https://marta.nlib.ee

MARTA is a prototype for automatic keyword tagging of Estonian articles. The prototype takes text as input (either in plain text format, downloaded from a given URL, or extracted from an uploaded file). Optionally, the user can select applicable methodologies and/or article domains. In the next step, the text is lemmatized and part-of-speech tags are assigned using the MLP10 (multilingual preprocessor) tool from Texta Toolkit. After lemmatization, keyword tagging methods are applied to extract the following keywords from the text:

• Topical keywords
• Personal names
• Locations and geopolitical entities
• Organizations
• Temporal keywords

The detected keywords are compared with the Estonian Thesaurus (EMS). If a keyword also appears in the EMS, a checkmark is displayed next to it. The identified keywords can be exported from the application in MARC format.

You can find a more detailed user guide for the prototype here (in Estonian).