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Practical neural dialogue management using pretrained language models
Šafář, Jaroslav ; Dušek, Ondřej (advisor) ; Bojar, Ondřej (referee)
Task-oriented dialogue systems pose a significant challenge due to their complexity and the need to handle components such as language understanding, state tracking, action selection, and language generation. In this work, we explore the improvements in dialogue management using pretrained language models. We propose three models that incorporate pretrained language models, aiming to provide a practical approach to designing dialogue systems capable of effectively addressing the language understanding, state tracking, and action selection tasks. Our dialogue state tracking model achieves a joint goal accuracy of 74%. We also identify limitations in handling complex or multi- step user requests in the action selection task. This research underscores the potential of pretrained language models in dialogue management while highlighting areas for further improvement. 1
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Noční motýli jako indikátory kvality zemědělské krajiny a úrovně biodiverzity při různém režimu hospodaření
Šafář, Jaroslav
This work deals with a research of moth species diversity in selected vineyards of southern Moravia that are often located in the vicinity of specially protected areas and often directly linked to them. When using sound agricultural practices, vineyards can provide a kind of stepping stones for a large number of endangered and rare species in their path to find suitable habitats to survive, or the environment of vineyards may be partially or even permanently colonized. During 2010 and 2011 in six vineyards and two forest-steppe areas, 8,061 specimens belonging to 309 species (12 families) of moths were collected using portable light traps. Based on some ecological indices, DCA, RDA, CCA analysis, Spearman's correlation coefficient, etc., the relationship between moths and the influence of farming in the vineyards (conventional, integrated, organic) in terms of agro-technical practices and the influence of natural and semi-natural habitats in intermediate vineyards surrounding on the moth communities of the monitored localities was evaluated. The results show that species diversity increases with vineyards having cover crop in the absence of application of chemical insecticides and especially with maintaining selffloristic succession in vineyard alleyways with cover crop. In RDA and CCA analysis, certain species responded significantly to the influence of studied factors of vineyard farm management, and for some species there was a significant effect of habitats in the immediate vicinity of monitored areas, but this effect did not reach statistical significance such as vineyard management factors examined.
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