Sirvi Autor "Lepson, Henrik" järgi

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Estonian Simultaneous Speech-to-Text Machine Translation
(Tartu Ülikool, 2025) Lepson, Henrik; Fišel, Mark, juhendaja; Tartu Ülikool. Loodus- ja täppisteaduste valdkond; Tartu Ülikool. Arvutiteaduse instituut
Simultaneous machine translation is a task, where the translation system is expected to start translating before having access to the entire input sequence. This makes it a challenging and error-prone task. This thesis explored the feasibility of using pre-trained open models for simultaneous speech-to-text translation on the Estonian-English, Estonian-Russian, English-Estonian and Russian-Estonian directions. Two types of systems were evaluated: cascaded and end-to-end. The cascaded system relied on Whisper large-v3-turbo and NLLB-200 distilled 1.3B. The end-to-end system was based on Seamless M4Tv2 large. In addition, both systems used Voice Activity Detection (VAD) and LocalAgreement. The systems were compared with and without fine-tuning. For fine-tuning, a synthetic dataset with more than 4 million samples was created from various publicly available datasets. The dataset contained a 1:1 mix of full and partial sequences. The evaluation results showed that both systems are strongest on the Estonian-English direction followed by English-Estonian. Estonian-English direction can be translated without additional fine-tuning. Both systems struggled on the Estonian-Russian and Russian-Estonian directions. The translation quality and latency improved for both directions after fine-tuning.
Koroonapandeemia mõju krooniliste haiguste ravile Eestis
(Tartu Ülikool, 2022) Lepson, Henrik; Kolde, Raivo, juhendaja; Tartu Ülikool. Loodus- ja täppisteaduste valdkond; Tartu Ülikool. Arvutiteaduse instituut
Saudi Araabia tähtsus Ameerika Ühendriikide ja Ühendkuningriigi vahelistes suhetes Teise maailmasõja eel ja ajal
(Tartu Ülikool, 2018) Lepson, Henrik; Medijainen, Eero, juhendaja; Tartu Ülikool. Humanitaarteaduste ja kunstide valdkond; Tartu Ülikool. Ajaloo ja arheoloogia instituut