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DREAM technical report for the Alexa Prize 4

By Moscow Institute of Physics and Technology
2021
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In this report, we present the DREAM 2 Socialbot design and share scientific and technology contributions made towards developing a fluent and meaningful socialbot for Alexa Prize 4. Building on top of the last year’s solution we added a rich plethora of the script-driven skills created with the help of the novel Dialogue Flow Framework. To lay down the foundation for the discourse-driven dialogue strategy management we introduced tag-based Response Selector and Speech Functions Classifier. We also began working on User and Bot Persona Knowledge Graphs as well as incorporated our work on World Knowledge Graph alongside with Entity Linking. The final version of DREAM 2 Socialbot is still a hybrid system that combines rule-based, deep learning, and knowledge based driven components, but it moves closer to a goal-aware system that can recognize users’ and own goals and drive the dialogue strategically.

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